The races · 17, 37 and 54 KM It's up to you.
The 17 KM* to discover, the 37 KM** to push yourself, the 54 KM*** to go all in.
The three formats at a glance.
Sunday 4 April 2027, start and finish at the Village LIGHT ON in Celles-sur-Plaine. Same lake, three ways to loop around it.
| 17 KM* | 37 KM** | 54 KM*** | |
|---|---|---|---|
| Positive elevation | 530 m | 1250 m | 1900 m |
| Start | 9:30 | 8:30 | 7:30 |
| Price | €19 | €39 | €49 |
| Included | Free tee-shirt, finisher medal | Free tee-shirt, finisher medal | Free tee-shirt, finisher medal |
| Aid stations | 1 on the route (at km 11.3) + finish | 2 on the route (km 11 and km 26) + finish | 3 on the route (km 11.3, 28.3 and 43.4) + finish |
| Cut-off times | Km 11.3 at 2h15 | Km 11.3 at 2h15, km 26.2 at 4h45 | Km 11.3 at 2h15, km 28.3 at 5h30, km 43.4 at 8h30, finish at 10h30 |
| Who's it for? | First trail, coming back, after the scenery | Those used to climbing and technical terrain | Runners comfortable with long outings |
| Track | OpenRunner · GPX | OpenRunner · GPX | OpenRunner · GPX |
| UTMB Index |  | |  |
Swipe to see all three formats
17 KM*
The lakeshore, a few honest but reasonable climbs, and all the scenery. Perfect for a first trail or a comeback.
Who's it for?
A first trail, road runners who want a taste of the trails, or anyone after the scenery without spending the whole day on it.
Aid stations
One aid station on the route and the finish aid station at the Village LIGHT ON. Enough to get round without heavy kit.
Cut-off time
Just one, at km 11.3 at 2h15, for everyone's safety. Time confirmed before the race.
The scenery was stunning and the route really well suited.
A route with lots and lots of singletrack, just the way I like it! A great mix of climbs and descents! BRAVO!
Lovely route along the lake, free tee-shirt, medal…
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37 KM**
Ridgelines, deep forests and technical sections along the lake. It climbs, it drops… and it starts again.
Who's it for?
For trail regulars who enjoy climbing and technical terrain. Demanding, but entirely doable with regular training.
Aid stations
Two aid stations with drinks and food, at km 11 and km 26, plus the full aid station at the finish at the Village LIGHT ON. Details and kit on the Practical Info page.
Cut-off times
Cut-off at km 11.3 at 2h15 and at km 26.2 at 4h45 (Col de la Chapelotte, on the way back), for everyone's safety. Times confirmed before the race.
Superb course and route, technical but not too much… Excellent organisation and atmosphere, top volunteers.
The trails on offer were really beautiful with good variety. My overall impression is really good. Well done and thank you for this great trail outing.
My first trail: well organised, clear information and volunteers with a smile. I really liked the feel of a "small" event, thank you!
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54 KM***
The big format on the heights above the lake: ridgelines, deep forests and the biggest chunk of climbing of the day. For those who love long outings… and good aid stations.
Who's it for?
For runners comfortable with long outings and technical terrain. It's the toughest of the three: better to arrive with some kilometres in the legs.
Aid stations
Three aid stations with drinks and food on the route, at km 11.3, 28.3 and 43.4, plus the full aid station at the finish at the Village LIGHT ON. Details and mandatory kit on the Practical Info page.
Start & cut-offs
Start at 07:30 from the Village LIGHT ON, the first of the three. Cut-offs at km 11.3 (2h15, i.e. 09:45), km 28.3 (5h30, i.e. 13:00) and km 43.4 (8h30, i.e. 16:00); finish to be reached within 10h30 maximum, before 18:00.
No feedback on the 54 KM*** yet. The first will be yours.
Before you line up
Age categories, medical certificate or PPS, kit, cut-off times, refunds: it's all in the rules.
Picked your distance ?
Registration is open. See you on 4 April 2027.