LIGHT ON TRI Madine.
The L*** is the half-distance race at LIGHT ON TRI Madine and the only format held on the Saturday: two swim laps in the Lac de Madine, two bike laps over the higher ground north-west of the lake and three run laps along the shore. As the series finale, it asks above all for a bike ride that still leaves legs for the half marathon.
LIGHT ON TRI Madine 2027: Course, Elevation & Route Profile
The start is from the lake beach with two laps of 950 metres, split by a short run across the sand. Transition and finish are at the Madine 1 site on the Nonsard-Lamarche side, the finish under the arch in the Village LIGHT ON, where spectators and finishers gather.
The bike course is two identical laps. Each starts flat on the plain around the lake, then climbs twice for just under two kilometres onto the higher ground and, after a longer descent, returns flat to transition. Aid is at kilometres 14 and 52, in each case shortly after the first climb of a lap.
The run is the counterweight: three seven-kilometre laps between road and paths along the shore, with almost no relief and five aid stations. Since every lap passes the village, you see the crowd on the beach several times. In mid-September, at the end of the triathlon season, the weather is open; past participants mostly mention the wind across the open lake plain.
+908 m
+123 m
Bike course
85 km · +908 m| Start | Length | Ø | Max. | Gain | Cat. |
|---|---|---|---|---|---|
| km 12.6 | 1.8 km | 5.2 % | 11.8 % | +93 m | Cat. 4 |
| km 25 | 1.8 km | 5.3 % | 15 % | +96 m | Cat. 4 |
| km 50.9 | 1.9 km | 5 % | 11.8 % | +97 m | Cat. 4 |
| km 53.4 | 1.6 km | 3.2 % | 5.6 % | +52 m | — |
| km 63.3 | 1.8 km | 5.2 % | 14.5 % | +95 m | Cat. 4 |
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.
Run course
21 km · +123 m| Start | Length | Ø | Max. | Gain | Cat. |
|---|
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.
How to pace LIGHT ON TRI Madine.
Settle into the race
Spread the effort right and the race is decided in the middle of the half marathon. Swim the first lap in control, use the beach exit to breathe, and ride the first bike lap deliberately below the pressure you have in mind: the four climbs onto the plateau add up, and the second lap is harder than the first if the wind is up.
Spread the effort
The trap is the flat sections around the lake. A high speed feels cheap there, yet that is exactly where a headwind costs most.
Finish strong
Hold power steady rather than speed, and treat the three run laps as a race that really begins on the second lap.
Training plan for LIGHT ON TRI Madine: 12-week build
Build all three disciplines
Expect roughly 4:30 to 6:30 hours depending on your level. The cut-offs are structural: the swim must be done within 1:10 hours and the bike within 5:30 hours of the start, so slower athletes should plan their bike effort around them.
Brick sessions
The effort is long and aerobic, broken by four bike climbs that push briefly above threshold. What decides the race is how fresh you are getting off the bike after about 85 kilometres, because the flat run has no gradient to cap your pace for you.
Practise transitions
Train long rides on the aero bars with repeated five to eight minute climbs in the second half, followed by brick runs at half-marathon pace. Add open-water sessions in a wetsuit and practise the beach exit between two laps.
Arrive fresh
The mid-September date makes this the end of a long summer: plan the season so you do not arrive tired, and test your fuelling in cooler, windier weather.
Courses
Download each leg of LIGHT ON TRI Madine as its own GPX file for your watch or bike computer.
Let YOUB adapt your plan for LIGHT ON TRI Madine dynamically
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.
Everything about LIGHT ON TRI Madine.
How long is LIGHT ON TRI Madine?
LIGHT ON TRI Madine is 107.9 km long. That distance shapes how much aerobic endurance, pace durability, and race-specific work belong in the training plan.
How much elevation gain does LIGHT ON TRI Madine have?
LIGHT ON TRI Madine has around 1,031 m of elevation gain over 107.9 km. That affects pacing, muscular load, and preparation for late-race sections.
What is the profile of the bike course at LIGHT ON TRI Madine?
The bike course at LIGHT ON TRI Madine is classified as Rolling, averaging 10.8 vertical metres per kilometre. 39% of the route is flat, 29% climbs moderately (2 to 6%) and 2% is steeper than 6%.
What climbs does the bike course at LIGHT ON TRI Madine have?
The hardest climb on the bike course at LIGHT ON TRI Madine starts at kilometre 50.9, runs for 1.9 km at an average of 5% and gains 97 metres. Cycling-convention rating: Cat. 4. 5 climbs are mapped in total.
Is there a GPX file for the LIGHT ON TRI Madine course?
Yes. Each leg of LIGHT ON TRI Madine is on this page as its own free GPX download — ready to import into Garmin, Wahoo, Komoot, Strava or any other app that reads GPX.
How should I prepare for LIGHT ON TRI Madine?
Preparation for LIGHT ON TRI Madine should account for 107.9 km, 1,031 m of elevation gain, current training load, and available training time. An adaptive plan helps place key sessions without ignoring recovery and real life.
What pacing strategy works for LIGHT ON TRI Madine?
The pacing strategy for LIGHT ON TRI Madine should reflect 107.9 km, 1,031 m of elevation gain, and your current fitness. Start controlled and keep margin for sections where the profile or fatigue makes target pace harder.
When does LIGHT ON TRI Madine take place?
LIGHT ON TRI Madine takes place on September 18, 2027.
Where does LIGHT ON TRI Madine take place?
LIGHT ON TRI Madine takes place in Nonsard-Lamarche, France.
Which distances does LIGHT ON TRI Madine offer?
LIGHT ON TRI Madine offers 4 distances — Triathlon L***: 107.9 km; Triathlon M**: 56.5 km; Triathlon S*: 25.5 km; RUN 7 KM: 7 km.
How do I register for LIGHT ON TRI Madine?
Registration runs through the organiser: lightontri.com. YOUB shows you the course, elevation profile and training plan for your preparation.
