
The Locronan-Plogonnec-Quimper Half Marathon links one of the most beautiful villages in France with the prefecture town of Finistère: a point-to-point course that starts about 150 metres higher than it finishes on the quays of the Odet. Running it fast means using the net drop without burning matches on the short rises in the first third and shortly before the finish.
The start is in Locronan beside the Saint-Ronan church, at a little over 150 metres. The first six kilometres roll and lose height only slowly; after almost three kilometres the course reaches Plogonnec and its Saint-Thurien church. At kilometre 6 comes the steepest stretch of the day: about 500 metres at just over five percent on average, climbing back to around 140 metres. From there the long way down towards Quimper begins.
Between kilometres 7 and 14 the road falls steadily by about 80 metres, and around kilometre 14 a short, steep drop takes you into the valley at Ty Planche, where the 10 km field runs too. From here both races share the road. The last seven kilometres stay low but are not quite flat: a rise at kilometre 18 costs almost 20 metres of climbing before the level run into town.
The organiser describes the route as green and tree-lined, and it is asphalt throughout on the country roads of Cornouaille. The finish is the highlight: through the pedestrian streets of the old town onto the quays of the Odet in the centre of Quimper. With about 2,800 finishers in 2026 and pacers from 1:20 to 2:00, it is the region's big road race of March.
| Start | Length | Ø | Max. | Gain | Cat. |
|---|---|---|---|---|---|
| km 6.2 | 0.5 km | 5.2 % | 12.6 % | +27 m | — |
| km 17.9 | 0.5 km | 3.9 % | 8.8 % | +17 m | — |
Climb categories follow the road-cycling convention and rate the terrain itself (length and gradient) regardless of sport: Cat. 4 marks the easiest rated climbs, Cat. 1 the hardest, and HC (hors catégorie, “beyond categorization”) is reserved for the most brutal ascents. Short climbs below the Cat. 4 threshold stay unrated.
The first six kilometres are where this race is lost. The course rolls, the field pours out of the narrow start in Locronan, and the steepest climb of the day is still ahead. Run slightly slower than goal pace here and take the kilometre-6 climb on feel rather than on the watch: the seconds come back for free on the descent that follows.
The time is made between kilometres 7 and 14. The steady downhill carries you without extra cost; keep the effort constant and let the pace drift slightly faster than goal. Run the steep section around kilometre 14 relaxed with short steps, because braking or pounding there is paid for in the quads.
The trap comes afterwards: after the long descent, the rise at kilometre 18 feels harder than it is. If you can hold on there and still lift the pace over the last two flat kilometres, you paced the course right.

For most age-group runners the half takes between 1:30 and 2:30, a continuous aerobic effort just below threshold. The course is mostly downhill with short undulations; it does not need hill training in the proper sense, but it loads the legs differently from a flat city course.
The race is decided in the middle section between kilometres 7 and 14, where you hold a controlled, faster-than-goal pace downhill for a long time, and in the stretch after it, where tired quads have to carry you over the rise at kilometre 18 and through the flat finale. That calls for eccentric strength in the thigh muscles and familiarity with running fast on a gentle downgrade.
So build in regular tempo runs on rolling roads with some gentle downhill, and finish long runs with a flat section at race pace. Short hill sprints and strength work such as lunges and eccentric squats make the legs robust for the drop around kilometre 14.
The race is held in late March, so the build falls in winter. Do the key sessions on asphalt, not only on soft ground, so tendons and muscles get used to fast running on a hard surface.

Download the Locronan-Plogonnec-Quimper Half Marathon course as a GPX file for your watch or bike computer.
Ben connects your goal, the course, current load, recovery, and calendar. Your plan stays pointed at race day even when real life is not perfectly plannable.
Locronan-Plogonnec-Quimper Half Marathon is 21.1 km long. That distance shapes how much aerobic endurance, pace durability, and race-specific work belong in the training plan.
Locronan-Plogonnec-Quimper Half Marathon has around 184 m of elevation gain over 21.1 km. That affects pacing, muscular load, and preparation for late-race sections.
Locronan-Plogonnec-Quimper Half Marathon is classified as Rolling, averaging 8.6 vertical metres per kilometre. 29% of the route is flat, 23% climbs moderately (2 to 6%) and 2% is steeper than 6%.
The hardest climb of Locronan-Plogonnec-Quimper Half Marathon starts at kilometre 6.2, runs for 0.5 km at an average of 5.2% and gains 27 metres. 2 climbs are mapped in total.
No, Locronan-Plogonnec-Quimper Half Marathon is a point-to-point course: start and finish are in different places.
Yes. The Locronan-Plogonnec-Quimper Half Marathon course is on this page as a free GPX download — ready to import into Garmin, Wahoo, Komoot, Strava or any other app that reads GPX.
Preparation for Locronan-Plogonnec-Quimper Half Marathon should account for 21.1 km, 184 m of elevation gain, current training load, and available training time. An adaptive plan helps place key sessions without ignoring recovery and real life.
The pacing strategy for Locronan-Plogonnec-Quimper Half Marathon should reflect 21.1 km, 184 m of elevation gain, and your current fitness. Start controlled and keep margin for sections where the profile or fatigue makes target pace harder.
Semi-marathon Locronan-Plogonnec-Quimper takes place on March 21, 2027.
Semi-marathon Locronan-Plogonnec-Quimper takes place in Quimper, France.
Locronan-Plogonnec-Quimper Half Marathon offers 3 distances — Semi-marathon: 21.1 km; 10 km: 10 km; 5 km: 5 km.
Registration runs through the organiser: locronan-quimper.bzh. YOUB shows you the course, elevation profile and training plan for your preparation.