Races Half marathon · Locronan, France
Semi-Marathon Locronan-Plogonnec-Quimper
Semi-Marathon Locronan-Plogonnec-Quimper is a rolling half marathon in Locronan, France, held each March. A one-way road run from Locronan through Plogonnec and wooded lanes to the quays of the Odet in Quimper. It climbs about 90 m but drops about 240 m, so the second half is largely downhill. Late March in western Brittany is cool and changeable, typically 5 to 13°C in the afternoon. The rises around Locronan are small but relentless — train on similar terrain and race by effort, not pace.
Page rebuilt 2026-11-14 · race facts not independently verified — confirm dates and entries on the official race site
When
March
next: Sunday 21 March 2027
Course
rolling
Half marathon
Conditions
Late March in western Brittany is cool and changeable, typically 5 to 13°C in the afternoon.
Racing this course well
A one-way road run from Locronan through Plogonnec and wooded lanes to the quays of the Odet in Quimper. It climbs about 90 m but drops about 240 m, so the second half is largely downhill.
The rises around Locronan are small but relentless — train on similar terrain and race by effort, not pace.
Getting a place
- How you get in
- Open entry: first come, first served
- Entries open
- Entries for 2027 opened on 2 November 2026 at 18:00
- Price
- €30, rising to €35 in the last days before the race (2026 race)
- Does it sell out?
- YesThe organiser's site says the half and the 10k were full about 20 minutes after entries opened for 2027.
Official Semi-Marathon Locronan-Plogonnec-Quimper site →Checked November 2026
Race day
- Next race
- Sunday 21 March 2027
- Start time
- 14:30
- Field size
- 2,798 finishers in 2026
- Also on the day
- 10k, 5k
The course in numbers
Mostly wooded and green lanes via Plogonnec and Le Croëzou, then a finish on the Odet quays near Saint-Corentin cathedral.
- Layout
- Point-to-point
- Surface
- Road
- Total climb
- 90 m
- Total descent
- 240 m
Worth knowing
- The race starts in the village of Locronan and finishes in Quimper, with shuttle buses to the start.
- The 10k starts at Le Croëzou and its first 4 km are entirely downhill.
- The 2027 race is billed as the 10th edition.
Pick your goal for Locronan
Pace charts, weekly structure and timelines for the most common half marathon goals:
The date shown is the one the organiser has announced. Change it if yours differs.
Build your training around Semi-Marathon Locronan-Plogonnec-Quimper.
RunV works backwards from race day to today. Your plan adapts when life interrupts, and you approve every change. It does not adapt to this specific course — the pacing guidance above is where the course knowledge is.
Everything above stays free and complete — this is an optional next step, not a paywall.
Asked often
- When is the Semi-Marathon Locronan-Plogonnec-Quimper?
- The next Semi-Marathon Locronan-Plogonnec-Quimper is on Sunday 21 March 2027 in Locronan, France. It is held each March.
- Is the Semi-Marathon Locronan-Plogonnec-Quimper course flat?
- A one-way road run from Locronan through Plogonnec and wooded lanes to the quays of the Odet in Quimper. It climbs about 90 m but drops about 240 m, so the second half is largely downhill.
- How do I enter the Semi-Marathon Locronan-Plogonnec-Quimper?
- Open entry: first come, first served. Entries for 2027 opened on 2 November 2026 at 18:00. Price: €30, rising to €35 in the last days before the race (2026 race).
- Does the Semi-Marathon Locronan-Plogonnec-Quimper sell out?
- Yes. The organiser's site says the half and the 10k were full about 20 minutes after entries opened for 2027.
- How should I train for the Semi-Marathon Locronan-Plogonnec-Quimper?
- Build for the course you'll actually race at the Semi-Marathon Locronan-Plogonnec-Quimper: rolling terrain, March conditions. RunV Premium builds a training plan around your goal time and race date, and lets you adapt it when life interrupts the Locronan build.
Not sure what to target? Predict your half marathon time from a recent race →
More half marathon races
Supplements research for this distance
Build for Locronan — around your actual life
RunV engineers your block backwards from race day in March — and adapts it when training doesn't go to script. You approve every change.
