From 14–16 August 2026, Boréalys Mont-Tremblant by UTMB makes its debut as a UTMB World Series event, turning the Tremblant resort and surrounding Laurentian peaks into a three-day ultra-trail festival. Runners can take on the flagship Odyssée 100K ultra, the Tremblante 50K, the two mid-distance mountain races Diable 20K and Chutes-Croches 20K, the accessible P’tite 5K, or an 80K relay that shares the big-mountain experience between teammates, plus dedicated kids’ races. All courses dive into boreal forest singletrack, rocky ridgelines, ski-slope climbs, rooty descents and remote lakeside and river sections, with significant elevation gain and long stretches of technical terrain that demand strong trail skills and pacing. The event leans into Québec folklore and culture with storytelling, music and local food at the Tremblant village, creating a weekend that feels as much like a mountain gathering as a race. As the only UTMB World Series stop east of the Canadian Rockies, it’s set to become a marquee destination for trail runners from across North America and beyond.
Races
Race Date:
15 August, 2026
The P’tite 5K takes place on Saturday 15 August 2026 in and around Village Tremblant, a 5 km trail run organised by Boréalys Mont-Tremblant by UTMB that uses shorter, less technical paths near the resort so newer trail runners and families can experience the folklore-infused atmosphere without the longer ultra distances.
Race Date:
15 August, 2026
The Diable 20K runs on Saturday 15 August 2026 from Village Tremblant, a UTMB 20K-category trail race organised by Boréalys Mont-Tremblant by UTMB that sends runners onto technical, rooty singletrack and forest roads overlooking the Rivière du Diable for a punchy introduction to the event’s steep, rocky style.
Race Date:
16 August, 2026
The Chutes-Croches 20K is held on Sunday 16 August 2026 from Village Tremblant, a UTMB 20K-category course of about 14 km with 858 m of elevation gain along the Rivière du Diable organised by Boréalys / UTMB World Series, featuring sustained climbing, tight forest trails and views of the Chutes-Croches waterfalls.
Race Date:
16 August, 2026
The Tremblante 50K takes place on Sunday 16 August 2026, starting and finishing in Village Tremblant, a UTMB 50K-category mountain ultra organised by Boréalys / UTMB World Series that packs roughly 50 km of demanding Laurentian terrain, long climbs and rocky forest descents around the Mont-Tremblant trail network.
Race Date:
15 August, 2026
The Relais 80K relay is scheduled for Saturday 15 August 2026, starting and finishing at Village Tremblant, an 80 km team event organised by Boréalys / UTMB World Series where 2–6 runners share the legendary 80 km course through Tremblant’s wild boreal forest to raise funds for local causes.
Race Date:
15 August, 2026
The Odyssée 100K runs on Saturday 15 August 2026 from Village Tremblant, Mont-Tremblant, Québec, Canada, organised by Boréalys Mont-Tremblant by UTMB / Événements Harricana & UTMB World Series, a near-80 km UTMB 100K-category ultra with over 3,500 m of elevation gain through rugged Laurentian boreal forest, steep climbs and technical singletrack.
Weather based on historical averages.
FAQs
What is the P'tite 5K?
How long is the P'tite 5K?
Where does the P'tite 5K take place?
What is the elevation gain of the P'tite 5K?
How can I prepare for the P'tite 5K?
How do I choose the right training plan for the P'tite 5K?
The P’tite 5K takes place on Saturday 15 August 2026 in and around Village Tremblant, a 5 km trail run organised by Boréalys Mont-Tremblant by UTMB that uses shorter, less technical paths near the resort so newer trail runners and families can experience the folklore-infused atmosphere without the longer ultra distances.
The P'tite 5K is 5km long.
The P'tite 5K takes place in Mont-Tremblant, QC, Canada.
The P'tite 5K elevation gain is 362 meters, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the P'tite 5K?
The P’tite 5K takes place on Saturday 15 August 2026 in and around Village Tremblant, a 5 km trail run organised by Boréalys Mont-Tremblant by UTMB that uses shorter, less technical paths near the resort so newer trail runners and families can experience the folklore-infused atmosphere without the longer ultra distances.
How long is the P'tite 5K?
The P'tite 5K is 5km long.
Where does the P'tite 5K take place?
The P'tite 5K takes place in Mont-Tremblant, QC, Canada.
What is the elevation gain of the P'tite 5K?
The P'tite 5K elevation gain is 362 meters, which Runna classifies as a Hilly race.
How can I prepare for the P'tite 5K?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the P'tite 5K?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Diable 20K?
How long is the Diable 20K?
Where does the Diable 20K take place?
What is the elevation gain of the Diable 20K?
How can I prepare for the Diable 20K?
How do I choose the right training plan for the Diable 20K?
The Diable 20K runs on Saturday 15 August 2026 from Village Tremblant, a UTMB 20K-category trail race organised by Boréalys Mont-Tremblant by UTMB that sends runners onto technical, rooty singletrack and forest roads overlooking the Rivière du Diable for a punchy introduction to the event’s steep, rocky style.
The Diable 20K is 20km long.
The Diable 20K takes place in Mont-Tremblant, QC, Canada.
The Diable 20K elevation gain is 1561 meters, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Diable 20K?
The Diable 20K runs on Saturday 15 August 2026 from Village Tremblant, a UTMB 20K-category trail race organised by Boréalys Mont-Tremblant by UTMB that sends runners onto technical, rooty singletrack and forest roads overlooking the Rivière du Diable for a punchy introduction to the event’s steep, rocky style.
How long is the Diable 20K?
The Diable 20K is 20km long.
Where does the Diable 20K take place?
The Diable 20K takes place in Mont-Tremblant, QC, Canada.
What is the elevation gain of the Diable 20K?
The Diable 20K elevation gain is 1561 meters, which Runna classifies as a Hilly race.
How can I prepare for the Diable 20K?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Diable 20K?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Chutes-Croches 20K?
How long is the Chutes-Croches 20K?
Where does the Chutes-Croches 20K take place?
What is the elevation gain of the Chutes-Croches 20K?
How can I prepare for the Chutes-Croches 20K?
How do I choose the right training plan for the Chutes-Croches 20K?
The Chutes-Croches 20K is held on Sunday 16 August 2026 from Village Tremblant, a UTMB 20K-category course of about 14 km with 858 m of elevation gain along the Rivière du Diable organised by Boréalys / UTMB World Series, featuring sustained climbing, tight forest trails and views of the Chutes-Croches waterfalls.
The Chutes-Croches 20K is 20km long.
The Chutes-Croches 20K takes place in Mont-Tremblant, QC, Canada.
The Chutes-Croches 20K elevation gain is 858 meters, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Chutes-Croches 20K?
The Chutes-Croches 20K is held on Sunday 16 August 2026 from Village Tremblant, a UTMB 20K-category course of about 14 km with 858 m of elevation gain along the Rivière du Diable organised by Boréalys / UTMB World Series, featuring sustained climbing, tight forest trails and views of the Chutes-Croches waterfalls.
How long is the Chutes-Croches 20K?
The Chutes-Croches 20K is 20km long.
Where does the Chutes-Croches 20K take place?
The Chutes-Croches 20K takes place in Mont-Tremblant, QC, Canada.
What is the elevation gain of the Chutes-Croches 20K?
The Chutes-Croches 20K elevation gain is 858 meters, which Runna classifies as a Hilly race.
How can I prepare for the Chutes-Croches 20K?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Chutes-Croches 20K?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Tremblante 50K?
How long is the Tremblante 50K?
Where does the Tremblante 50K take place?
What is the elevation gain of the Tremblante 50K?
How can I prepare for the Tremblante 50K?
How do I choose the right training plan for the Tremblante 50K?
The Tremblante 50K takes place on Sunday 16 August 2026, starting and finishing in Village Tremblant, a UTMB 50K-category mountain ultra organised by Boréalys / UTMB World Series that packs roughly 50 km of demanding Laurentian terrain, long climbs and rocky forest descents around the Mont-Tremblant trail network.
The Tremblante 50K is 50km long.
The Tremblante 50K takes place in Mont-Tremblant, QC, Canada.
The Tremblante 50K elevation gain is 2437 meters, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Tremblante 50K?
The Tremblante 50K takes place on Sunday 16 August 2026, starting and finishing in Village Tremblant, a UTMB 50K-category mountain ultra organised by Boréalys / UTMB World Series that packs roughly 50 km of demanding Laurentian terrain, long climbs and rocky forest descents around the Mont-Tremblant trail network.
How long is the Tremblante 50K?
The Tremblante 50K is 50km long.
Where does the Tremblante 50K take place?
The Tremblante 50K takes place in Mont-Tremblant, QC, Canada.
What is the elevation gain of the Tremblante 50K?
The Tremblante 50K elevation gain is 2437 meters, which Runna classifies as a Hilly race.
How can I prepare for the Tremblante 50K?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Tremblante 50K?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Relais 80K?
How long is the Relais 80K?
Where does the Relais 80K take place?
What is the elevation gain of the Relais 80K?
How can I prepare for the Relais 80K?
How do I choose the right training plan for the Relais 80K?
The Relais 80K relay is scheduled for Saturday 15 August 2026, starting and finishing at Village Tremblant, an 80 km team event organised by Boréalys / UTMB World Series where 2–6 runners share the legendary 80 km course through Tremblant’s wild boreal forest to raise funds for local causes.
The Relais 80K is 80km long.
The Relais 80K takes place in Mont-Tremblant, QC, Canada.
The Relais 80K elevation gain is 3636 meters, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Relais 80K?
The Relais 80K relay is scheduled for Saturday 15 August 2026, starting and finishing at Village Tremblant, an 80 km team event organised by Boréalys / UTMB World Series where 2–6 runners share the legendary 80 km course through Tremblant’s wild boreal forest to raise funds for local causes.
How long is the Relais 80K?
The Relais 80K is 80km long.
Where does the Relais 80K take place?
The Relais 80K takes place in Mont-Tremblant, QC, Canada.
What is the elevation gain of the Relais 80K?
The Relais 80K elevation gain is 3636 meters, which Runna classifies as a Hilly race.
How can I prepare for the Relais 80K?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Relais 80K?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Odyssée 100K?
How long is the Odyssée 100K?
Where does the Odyssée 100K take place?
What is the elevation gain of the Odyssée 100K?
How can I prepare for the Odyssée 100K?
How do I choose the right training plan for the Odyssée 100K?
The Odyssée 100K runs on Saturday 15 August 2026 from Village Tremblant, Mont-Tremblant, Québec, Canada, organised by Boréalys Mont-Tremblant by UTMB / Événements Harricana & UTMB World Series, a near-80 km UTMB 100K-category ultra with over 3,500 m of elevation gain through rugged Laurentian boreal forest, steep climbs and technical singletrack.
The Odyssée 100K is 100km long.
The Odyssée 100K takes place in Mont-Tremblant, QC, Canada.
The Odyssée 100K elevation gain is 3636 meters, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Odyssée 100K?
The Odyssée 100K runs on Saturday 15 August 2026 from Village Tremblant, Mont-Tremblant, Québec, Canada, organised by Boréalys Mont-Tremblant by UTMB / Événements Harricana & UTMB World Series, a near-80 km UTMB 100K-category ultra with over 3,500 m of elevation gain through rugged Laurentian boreal forest, steep climbs and technical singletrack.
How long is the Odyssée 100K?
The Odyssée 100K is 100km long.
Where does the Odyssée 100K take place?
The Odyssée 100K takes place in Mont-Tremblant, QC, Canada.
What is the elevation gain of the Odyssée 100K?
The Odyssée 100K elevation gain is 3636 meters, which Runna classifies as a Hilly race.
How can I prepare for the Odyssée 100K?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Odyssée 100K?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Boréalys Mont-Tremblant by UTMB or Ultra-Trail du Mont-Blanc (UTMB). All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Boréalys Mont-Tremblant by UTMB website.
