The 5ᵉ édition du Run à l’Orient returns on 8 March 2026 as Lorient’s signature running event, organised by Lorient Triathlon on the emblematic base sous-marine waterfront. Runners can choose between the K5 (5 km, also in relay) run entirely on loops around La Base, the K10 (10 km) which adds a bigger circuit around the base and the étangs du Ter, and the more demanding K20 (20 km, solo or relay) that mixes roads, stabilised paths, forest tracks and even beach sections along the rade. The setting combines port infrastructure, WWII-era bunkers, sea views and green corridors, giving the race a unique blend of urban and coastal character. With kids’ races from age 7, accessible shorter formats and a longer, more adventurous option, the day caters to everyone from beginners to experienced club runners while showcasing southern Brittany’s maritime landscape.
Races
The 5 km run is also scheduled for Sunday 8 March 2026, organised by Lorient Triathlon Club, with a 2-loop (2 × 2.5 km) circuit inside the base-marine zone — an accessible option for beginners, joggers or those wanting a light, community-style run.
The 10 km starts the same day — 8 March 2026 — from the same base in Lorient, a single-loop urban/seaside course organised by Lorient Triathlon Club, suitable for a quick road run or training benchmark on a relatively flat route.
The 20 km race takes place on Sunday 8 March 2026 in Lorient, Morbihan, Brittany, France, organised by Lorient Triathlon Club; the route runs on a mix of roads, stabilised paths, forest trails and coastal tracks around the base-sous-marine site and nearby countryside, giving about 100 m of elevation gain and varied terrain.
Weather based on historical averages.
FAQs
What is the Run à l’Orient K5?
How long is the Run à l’Orient K5?
Where does the Run à l’Orient K5 take place?
What is the elevation gain of the Run à l’Orient K5?
How can I prepare for the Run à l’Orient K5?
How do I choose the right training plan for the Run à l’Orient K5?
The 5 km run is also scheduled for Sunday 8 March 2026, organised by Lorient Triathlon Club, with a 2-loop (2 × 2.5 km) circuit inside the base-marine zone — an accessible option for beginners, joggers or those wanting a light, community-style run.
The Run à l’Orient K5 is 5km long.
The Run à l’Orient K5 takes place in Lorient, France.
The Run à l’Orient K5 elevation gain is 18 metres, which Runna classifies as a Flat race.
The best way to train for the next race is to use a personalised 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 personalised 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 Run à l’Orient K5?
The 5 km run is also scheduled for Sunday 8 March 2026, organised by Lorient Triathlon Club, with a 2-loop (2 × 2.5 km) circuit inside the base-marine zone — an accessible option for beginners, joggers or those wanting a light, community-style run.
How long is the Run à l’Orient K5?
The Run à l’Orient K5 is 5km long.
Where does the Run à l’Orient K5 take place?
The Run à l’Orient K5 takes place in Lorient, France.
What is the elevation gain of the Run à l’Orient K5?
The Run à l’Orient K5 elevation gain is 18 metres, which Runna classifies as a Flat race.
How can I prepare for the Run à l’Orient K5?
The best way to train for the next race is to use a personalised 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 Run à l’Orient K5?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised 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 Run à l’Orient K10?
How long is the Run à l’Orient K10?
Where does the Run à l’Orient K10 take place?
What is the elevation gain of the Run à l’Orient K10?
How can I prepare for the Run à l’Orient K10?
How do I choose the right training plan for the Run à l’Orient K10?
The 10 km starts the same day — 8 March 2026 — from the same base in Lorient, a single-loop urban/seaside course organised by Lorient Triathlon Club, suitable for a quick road run or training benchmark on a relatively flat route.
The Run à l’Orient K10 is 10km long.
The Run à l’Orient K10 takes place in Lorient, France.
The Run à l’Orient K10 elevation gain is 44 metres, which Runna classifies as a Flat race.
The best way to train for the next race is to use a personalised 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 personalised 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 Run à l’Orient K10?
The 10 km starts the same day — 8 March 2026 — from the same base in Lorient, a single-loop urban/seaside course organised by Lorient Triathlon Club, suitable for a quick road run or training benchmark on a relatively flat route.
How long is the Run à l’Orient K10?
The Run à l’Orient K10 is 10km long.
Where does the Run à l’Orient K10 take place?
The Run à l’Orient K10 takes place in Lorient, France.
What is the elevation gain of the Run à l’Orient K10?
The Run à l’Orient K10 elevation gain is 44 metres, which Runna classifies as a Flat race.
How can I prepare for the Run à l’Orient K10?
The best way to train for the next race is to use a personalised 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 Run à l’Orient K10?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised 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 Run à l’Orient K20?
How long is the Run à l’Orient K20?
Where does the Run à l’Orient K20 take place?
What is the elevation gain of the Run à l’Orient K20?
How can I prepare for the Run à l’Orient K20?
How do I choose the right training plan for the Run à l’Orient K20?
The 20 km race takes place on Sunday 8 March 2026 in Lorient, Morbihan, Brittany, France, organised by Lorient Triathlon Club; the route runs on a mix of roads, stabilised paths, forest trails and coastal tracks around the base-sous-marine site and nearby countryside, giving about 100 m of elevation gain and varied terrain.
The Run à l’Orient K20 is 20km long.
The Run à l’Orient K20 takes place in Lorient, France.
The Run à l’Orient K20 elevation gain is 82 metres, which Runna classifies as a Flat race.
The best way to train for the next race is to use a personalised 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 personalised 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 Run à l’Orient K20?
The 20 km race takes place on Sunday 8 March 2026 in Lorient, Morbihan, Brittany, France, organised by Lorient Triathlon Club; the route runs on a mix of roads, stabilised paths, forest trails and coastal tracks around the base-sous-marine site and nearby countryside, giving about 100 m of elevation gain and varied terrain.
How long is the Run à l’Orient K20?
The Run à l’Orient K20 is 20km long.
Where does the Run à l’Orient K20 take place?
The Run à l’Orient K20 takes place in Lorient, France.
What is the elevation gain of the Run à l’Orient K20?
The Run à l’Orient K20 elevation gain is 82 metres, which Runna classifies as a Flat race.
How can I prepare for the Run à l’Orient K20?
The best way to train for the next race is to use a personalised 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 Run à l’Orient K20?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised 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 Run à l’Orient or Lorient Triathlon 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 Run à l’Orient website.