Fat Ass Trail Run returns on November 16, 2025, to Batawa Ski Hill in eastern Ontario for one of the province’s largest and most community‑driven trail events. Founded in 2003 with just 23 participants, it now welcomes runners and walkers of all ages and paces via multiple distances—from a 1 km kids’ "Big Bum" run to the 50 km ultra, plus a unique Bad Ass 6‑hour nonstop timed challenge. Courses feature a thrilling mix of terrain: forested single‑track, rocky and root‑covered trails, meadows, creek crossings, wooden bridges, and steep ski‑hill climbs.With low‑cost entry, minimal frills, and a welcoming ethos, the event emphasizes inclusivity—fast, slow, young, old, runners or walkers are all welcome. Medals are awarded for top males and females in each distance, while a whimsical “best finish‑time prediction” award adds local flair.
Races
50 km
25 km
17 km
10 km
7 km
5 km
The 50 km Ultra begins at 7:30 AM EST and covers five loops of the trail system with varied terrain—rocks, roots, meadows, creek crossings and ski-hill climbs—for a challenging and scenic adventure. Organized by Dirty Soles Trail Run, it takes place on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
Starting at 9:15 AM, the 25 km Trail features two loops of the north and south trails and climbs several times up the ski-hill slopes for runners seeking moderate ultramarathon terrain. Organized by Dirty Soles, it is held on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
The 17.5 km Trail (historically 16.5 km) departs at 10:30 AM, combining one north loop and part of the south loop, delivering enjoyable hills and mixed woodland terrain. Organized by Dirty Soles, the race occurs on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
The 10 km Trail Run starts around 12:00 PM, traversing the north loop on winding single-track and ski-hill inclines—fast but not easy. Organized by Dirty Soles, it is held on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
The 7.5 km Course begins at 1:00 PM, running a single south-loop lap with some ski-hill sections and easy trails perfect for newcomers or walkers. Hosted by Dirty Soles, it takes place on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
Starting around 2:00 PM, the 5 km Trail is a south-loop only option on moderate terrain, ideal for beginners or trail enthusiasts looking for a shorter day-run. Organized by Dirty Soles, it is held on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
Weather based on historical averages.
FAQs
What is the Fat Ass Trail Run 50 km?
How long is the Fat Ass Trail Run 50 km?
Where does the Fat Ass Trail Run 50 km take place?
What is the elevation gain of the Fat Ass Trail Run 50 km?
How can I prepare for the Fat Ass Trail Run 50 km?
How do I choose the right training plan for the Fat Ass Trail Run 50 km?
The 50 km Ultra begins at 7:30 AM EST and covers five loops of the trail system with varied terrain—rocks, roots, meadows, creek crossings and ski-hill climbs—for a challenging and scenic adventure. Organized by Dirty Soles Trail Run, it takes place on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
The Fat Ass Trail Run 50 km is 50km long.
The Fat Ass Trail Run 50 km takes place in Batawa, ON, Canada.
Runna classifies the Fat Ass Trail Run 50 km elevation profile as Moderate.
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 Fat Ass Trail Run 50 km?
The 50 km Ultra begins at 7:30 AM EST and covers five loops of the trail system with varied terrain—rocks, roots, meadows, creek crossings and ski-hill climbs—for a challenging and scenic adventure. Organized by Dirty Soles Trail Run, it takes place on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
How long is the Fat Ass Trail Run 50 km?
The Fat Ass Trail Run 50 km is 50km long.
Where does the Fat Ass Trail Run 50 km take place?
The Fat Ass Trail Run 50 km takes place in Batawa, ON, Canada.
What is the elevation gain of the Fat Ass Trail Run 50 km?
Runna classifies the Fat Ass Trail Run 50 km elevation profile as Moderate.
How can I prepare for the Fat Ass Trail Run 50 km?
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 Fat Ass Trail Run 50 km?
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 Fat Ass Trail Run 25 km?
How long is the Fat Ass Trail Run 25 km?
Where does the Fat Ass Trail Run 25 km take place?
What is the elevation gain of the Fat Ass Trail Run 25 km?
How can I prepare for the Fat Ass Trail Run 25 km?
How do I choose the right training plan for the Fat Ass Trail Run 25 km?
Starting at 9:15 AM, the 25 km Trail features two loops of the north and south trails and climbs several times up the ski-hill slopes for runners seeking moderate ultramarathon terrain. Organized by Dirty Soles, it is held on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
The Fat Ass Trail Run 25 km is 25km long.
The Fat Ass Trail Run 25 km takes place in Batawa, ON, Canada.
Runna classifies the Fat Ass Trail Run 25 km elevation profile as Moderate.
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 Fat Ass Trail Run 25 km?
Starting at 9:15 AM, the 25 km Trail features two loops of the north and south trails and climbs several times up the ski-hill slopes for runners seeking moderate ultramarathon terrain. Organized by Dirty Soles, it is held on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
How long is the Fat Ass Trail Run 25 km?
The Fat Ass Trail Run 25 km is 25km long.
Where does the Fat Ass Trail Run 25 km take place?
The Fat Ass Trail Run 25 km takes place in Batawa, ON, Canada.
What is the elevation gain of the Fat Ass Trail Run 25 km?
Runna classifies the Fat Ass Trail Run 25 km elevation profile as Moderate.
How can I prepare for the Fat Ass Trail Run 25 km?
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 Fat Ass Trail Run 25 km?
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 Fat Ass Trail Run 17.5 km?
How long is the Fat Ass Trail Run 17.5 km?
Where does the Fat Ass Trail Run 17.5 km take place?
What is the elevation gain of the Fat Ass Trail Run 17.5 km?
How can I prepare for the Fat Ass Trail Run 17.5 km?
How do I choose the right training plan for the Fat Ass Trail Run 17.5 km?
The 17.5 km Trail (historically 16.5 km) departs at 10:30 AM, combining one north loop and part of the south loop, delivering enjoyable hills and mixed woodland terrain. Organized by Dirty Soles, the race occurs on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
The Fat Ass Trail Run 17.5 km is 17km long.
The Fat Ass Trail Run 17.5 km takes place in Batawa, ON, Canada.
Runna classifies the Fat Ass Trail Run 17.5 km elevation profile as Moderate.
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 Fat Ass Trail Run 17.5 km?
The 17.5 km Trail (historically 16.5 km) departs at 10:30 AM, combining one north loop and part of the south loop, delivering enjoyable hills and mixed woodland terrain. Organized by Dirty Soles, the race occurs on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
How long is the Fat Ass Trail Run 17.5 km?
The Fat Ass Trail Run 17.5 km is 17km long.
Where does the Fat Ass Trail Run 17.5 km take place?
The Fat Ass Trail Run 17.5 km takes place in Batawa, ON, Canada.
What is the elevation gain of the Fat Ass Trail Run 17.5 km?
Runna classifies the Fat Ass Trail Run 17.5 km elevation profile as Moderate.
How can I prepare for the Fat Ass Trail Run 17.5 km?
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 Fat Ass Trail Run 17.5 km?
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 Fat Ass Trail Run 10 km?
How long is the Fat Ass Trail Run 10 km?
Where does the Fat Ass Trail Run 10 km take place?
What is the elevation gain of the Fat Ass Trail Run 10 km?
How can I prepare for the Fat Ass Trail Run 10 km?
How do I choose the right training plan for the Fat Ass Trail Run 10 km?
The 10 km Trail Run starts around 12:00 PM, traversing the north loop on winding single-track and ski-hill inclines—fast but not easy. Organized by Dirty Soles, it is held on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
The Fat Ass Trail Run 10 km is 10km long.
The Fat Ass Trail Run 10 km takes place in Batawa, ON, Canada.
Runna classifies the Fat Ass Trail Run 10 km elevation profile as Moderate.
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 Fat Ass Trail Run 10 km?
The 10 km Trail Run starts around 12:00 PM, traversing the north loop on winding single-track and ski-hill inclines—fast but not easy. Organized by Dirty Soles, it is held on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
How long is the Fat Ass Trail Run 10 km?
The Fat Ass Trail Run 10 km is 10km long.
Where does the Fat Ass Trail Run 10 km take place?
The Fat Ass Trail Run 10 km takes place in Batawa, ON, Canada.
What is the elevation gain of the Fat Ass Trail Run 10 km?
Runna classifies the Fat Ass Trail Run 10 km elevation profile as Moderate.
How can I prepare for the Fat Ass Trail Run 10 km?
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 Fat Ass Trail Run 10 km?
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 Fat Ass Trail Run 7.5 km ?
How long is the Fat Ass Trail Run 7.5 km ?
Where does the Fat Ass Trail Run 7.5 km take place?
What is the elevation gain of the Fat Ass Trail Run 7.5 km ?
How can I prepare for the Fat Ass Trail Run 7.5 km ?
How do I choose the right training plan for the Fat Ass Trail Run 7.5 km ?
The 7.5 km Course begins at 1:00 PM, running a single south-loop lap with some ski-hill sections and easy trails perfect for newcomers or walkers. Hosted by Dirty Soles, it takes place on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
The Fat Ass Trail Run 7.5 km is 7km long.
The Fat Ass Trail Run 7.5 km takes place in Batawa, ON, Canada.
Runna classifies the Fat Ass Trail Run 7.5 km elevation profile as Moderate.
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 Fat Ass Trail Run 7.5 km ?
The 7.5 km Course begins at 1:00 PM, running a single south-loop lap with some ski-hill sections and easy trails perfect for newcomers or walkers. Hosted by Dirty Soles, it takes place on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
How long is the Fat Ass Trail Run 7.5 km ?
The Fat Ass Trail Run 7.5 km is 7km long.
Where does the Fat Ass Trail Run 7.5 km take place?
The Fat Ass Trail Run 7.5 km takes place in Batawa, ON, Canada.
What is the elevation gain of the Fat Ass Trail Run 7.5 km ?
Runna classifies the Fat Ass Trail Run 7.5 km elevation profile as Moderate.
How can I prepare for the Fat Ass Trail Run 7.5 km ?
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 Fat Ass Trail Run 7.5 km ?
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 Fat Ass Trail Run 5 km?
How long is the Fat Ass Trail Run 5 km?
Where does the Fat Ass Trail Run 5 km take place?
What is the elevation gain of the Fat Ass Trail Run 5 km?
How can I prepare for the Fat Ass Trail Run 5 km?
How do I choose the right training plan for the Fat Ass Trail Run 5 km?
Starting around 2:00 PM, the 5 km Trail is a south-loop only option on moderate terrain, ideal for beginners or trail enthusiasts looking for a shorter day-run. Organized by Dirty Soles, it is held on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
The Fat Ass Trail Run 5 km is 5km long.
The Fat Ass Trail Run 5 km takes place in Batawa, ON, Canada.
Runna classifies the Fat Ass Trail Run 5 km elevation profile as Moderate.
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 Fat Ass Trail Run 5 km?
Starting around 2:00 PM, the 5 km Trail is a south-loop only option on moderate terrain, ideal for beginners or trail enthusiasts looking for a shorter day-run. Organized by Dirty Soles, it is held on 16 November 2025, at Batawa Ski Hill, Quinte West, Ontario.
How long is the Fat Ass Trail Run 5 km?
The Fat Ass Trail Run 5 km is 5km long.
Where does the Fat Ass Trail Run 5 km take place?
The Fat Ass Trail Run 5 km takes place in Batawa, ON, Canada.
What is the elevation gain of the Fat Ass Trail Run 5 km?
Runna classifies the Fat Ass Trail Run 5 km elevation profile as Moderate.
How can I prepare for the Fat Ass Trail Run 5 km?
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 Fat Ass Trail Run 5 km?
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!
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This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Fat Ass Trail Run 2025 or Dirty Soles Trail Running. 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 Fat Ass Trail Run 2025 website.
