The Demi-Marathon de Lachine 2025 returns on October 5, 2025, with a celebration of fitness, community, and scenic running in the southwest borough of Montréal. Participants can choose from five certified and chip-timed race distances: 21.1 km, 10 km (walk or run), 5 km, 2 km, and 1 km, offering something for runners of all ages and abilities. The route showcases the Lachine Canal’s picturesque pathways, passing green spaces and historic waterfronts with water and refreshment stations along the way. With a family-friendly environment, the event includes inflatables, music, and community vendors at the finish area. Organized with a charitable focus, proceeds support local causes, making the race both a personal achievement and a contribution to the community.
Races
Half Marathon
10 km
5 km
The Demi‑Marathon Lachine 21.1 km takes place on Sunday, October 5, 2025, along the scenic Lachine Canal in Montréal, organized by the Demi‑Marathon Lachine Committee. This certified route features a flat loop through parks like Noël‑Spinelli, Saint‑Louis, and Fort‑Rolland with up to 6 water stations, making it ideal for fast-paced runners.
Also held on October 5, 2025, the 10 km run begins at 9:30 AM near St‑Joseph Boulevard and follows the canal-side bike path, organized by the Demi‑Marathon Lachine Committee. The certified course loops through greenery and urban scenery with water stations and a lively finish festival.
The 5 km run starts at 10:45 AM on October 5, 2025, along the same canal-side route in Lachine, produced by the Demi‑Marathon Lachine Committee. Designed for casual runners and families, it’s a flat, accessible loop featuring post-race snacks and medals for all finishers.
Weather based on historical averages. Route data provided by Strava, based on last year's race.
FAQs
What is the Demi-Marathon Lachine?
How long is the Demi-Marathon Lachine?
Where does the Demi-Marathon Lachine take place?
What is the elevation gain of the Demi-Marathon Lachine?
How can I prepare for the Demi-Marathon Lachine?
How do I choose the right training plan for the Demi-Marathon Lachine?
The Demi‑Marathon Lachine 21.1 km takes place on Sunday, October 5, 2025, along the scenic Lachine Canal in Montréal, organized by the Demi‑Marathon Lachine Committee. This certified route features a flat loop through parks like Noël‑Spinelli, Saint‑Louis, and Fort‑Rolland with up to 6 water stations, making it ideal for fast-paced runners.
The Demi-Marathon Lachine is 21km long.
The Demi-Marathon Lachine takes place in Lachine, Montreal, QC, Canada.
Runna classifies the Demi-Marathon Lachine elevation profile as Flat.
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 Demi-Marathon Lachine?
The Demi‑Marathon Lachine 21.1 km takes place on Sunday, October 5, 2025, along the scenic Lachine Canal in Montréal, organized by the Demi‑Marathon Lachine Committee. This certified route features a flat loop through parks like Noël‑Spinelli, Saint‑Louis, and Fort‑Rolland with up to 6 water stations, making it ideal for fast-paced runners.
How long is the Demi-Marathon Lachine?
The Demi-Marathon Lachine is 21km long.
Where does the Demi-Marathon Lachine take place?
The Demi-Marathon Lachine takes place in Lachine, Montreal, QC, Canada.
What is the elevation gain of the Demi-Marathon Lachine?
Runna classifies the Demi-Marathon Lachine elevation profile as Flat.
How can I prepare for the Demi-Marathon Lachine?
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 Demi-Marathon Lachine?
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 Demi-Marathon Lachine 10K?
How long is the Demi-Marathon Lachine 10K?
Where does the Demi-Marathon Lachine 10K take place?
What is the elevation gain of the Demi-Marathon Lachine 10K?
How can I prepare for the Demi-Marathon Lachine 10K?
How do I choose the right training plan for the Demi-Marathon Lachine 10K?
Also held on October 5, 2025, the 10 km run begins at 9:30 AM near St‑Joseph Boulevard and follows the canal-side bike path, organized by the Demi‑Marathon Lachine Committee. The certified course loops through greenery and urban scenery with water stations and a lively finish festival.
The Demi-Marathon Lachine 10K is 10km long.
The Demi-Marathon Lachine 10K takes place in Lachine, Montreal, QC, Canada.
Runna classifies the Demi-Marathon Lachine 10K elevation profile as Flat.
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 Demi-Marathon Lachine 10K?
Also held on October 5, 2025, the 10 km run begins at 9:30 AM near St‑Joseph Boulevard and follows the canal-side bike path, organized by the Demi‑Marathon Lachine Committee. The certified course loops through greenery and urban scenery with water stations and a lively finish festival.
How long is the Demi-Marathon Lachine 10K?
The Demi-Marathon Lachine 10K is 10km long.
Where does the Demi-Marathon Lachine 10K take place?
The Demi-Marathon Lachine 10K takes place in Lachine, Montreal, QC, Canada.
What is the elevation gain of the Demi-Marathon Lachine 10K?
Runna classifies the Demi-Marathon Lachine 10K elevation profile as Flat.
How can I prepare for the Demi-Marathon Lachine 10K?
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 Demi-Marathon Lachine 10K?
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 Demi-Marathon Lachine 5K?
How long is the Demi-Marathon Lachine 5K?
Where does the Demi-Marathon Lachine 5K take place?
What is the elevation gain of the Demi-Marathon Lachine 5K?
How can I prepare for the Demi-Marathon Lachine 5K?
How do I choose the right training plan for the Demi-Marathon Lachine 5K?
The 5 km run starts at 10:45 AM on October 5, 2025, along the same canal-side route in Lachine, produced by the Demi‑Marathon Lachine Committee. Designed for casual runners and families, it’s a flat, accessible loop featuring post-race snacks and medals for all finishers.
The Demi-Marathon Lachine 5K is 5km long.
The Demi-Marathon Lachine 5K takes place in Lachine, Montreal, QC, Canada.
Runna classifies the Demi-Marathon Lachine 5K elevation profile as Flat.
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 Demi-Marathon Lachine 5K?
The 5 km run starts at 10:45 AM on October 5, 2025, along the same canal-side route in Lachine, produced by the Demi‑Marathon Lachine Committee. Designed for casual runners and families, it’s a flat, accessible loop featuring post-race snacks and medals for all finishers.
How long is the Demi-Marathon Lachine 5K?
The Demi-Marathon Lachine 5K is 5km long.
Where does the Demi-Marathon Lachine 5K take place?
The Demi-Marathon Lachine 5K takes place in Lachine, Montreal, QC, Canada.
What is the elevation gain of the Demi-Marathon Lachine 5K?
Runna classifies the Demi-Marathon Lachine 5K elevation profile as Flat.
How can I prepare for the Demi-Marathon Lachine 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 Demi-Marathon Lachine 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!
More
Sport:
Running
Tags:
Fun Run
Kid friendly
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Demi-Marathon Lachine 2025 or Lachine-Dorval Running Club. 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 Demi-Marathon Lachine 2025 website.
