Valais Triathlon Festival: Course, Elevation & Route Profile

Course & Elevation

The swim is 3.8 kilometres in two 1.9-kilometre laps of the Domaine des Îles lake. The start is at seven, the overall cut-off is sixteen hours, and entry is open from 18.

The bike lap begins at around 483 metres and falls gently over its first forty kilometres, down into the Rhône valley towards Dorénaz: forty kilometres without a climb worth naming. Only then does it bite: a short ramp at kilometre 43.7, then at kilometre 67.3 the first category-4 climb over 1.25 kilometres at 6.5 per cent with peaks to 9.6, immediately followed by the second over 2.73 kilometres at 5.3 per cent through the vineyards around Saint-Pierre-de-Clages, and finally a last ramp at kilometre 78.4. On the second lap the same pattern repeats from kilometre 134. There are aid points at only two places per lap, in Dorénaz and Saint-Pierre-de-Clages, and the organiser hands out no bottles: you stop and fill up yourself.

The marathon is the opposite: four laps of a 10.6-kilometre loop on the right bank of the Rhône, 87 per cent of it flat, 101 metres of climbing across the whole distance, no technical section and no change of surface. Aid comes three times per lap, twelve times in total. The difficulty here is not the terrain but the repetition: the same landscape four times over, with the course never offering anything new.

Pacing Strategy

The course splits every bike lap into two completely different halves, and that is where the day is decided. Swim the two lake laps evenly and without an opening sprint; the first forty bike kilometres fall gently and feel effortless, which makes them the race's biggest trap. Lift the average there and you arrive at the foot of the vineyard climbs with empty legs.

The two category-4 climbs decide the race, specifically on their second pass from kilometre 157.7. Four kilometres of ascent in one go, after more than five hours in the saddle, are for most people the point at which the marathon is either still possible or already lost. Ride them seated, at steady cadence and clearly below what would feel right on fresh legs.

The second trap is fuelling. Only two stations per lap and no bottle handups mean you plan independently across 90 kilometres and stop to do it. At August temperatures in the Rhône valley that is not a detail but the foundation of the whole day. On the marathon the logic inverts: aid three times a lap and zero distraction. Run the first two laps deliberately under target pace and treat lap three as the point where the race starts.

Training plan for Valais Triathlon Festival: 12-week build

For the full distance in Sion, expect roughly ten to fourteen and a half hours depending on your level; the cut-off is sixteen. The demand splits unusually cleanly: about two thirds of each bike lap is flat, steady work on the valley floor, and the final third is climbing with peaks above nine per cent. And that sequence comes twice.

The vineyard climbs on the second lap and the second half of the marathon decide the race. On the bike that is where you learn whether the fast valley kilometres were ridden with discipline; on the run, whether fluid and carbohydrate were right from the start. The changeover out of more than five hours in the aero position needs rehearsing too.

The conditions are the real opponent. The Rhône valley around Sion is among the driest and warmest regions of Switzerland, an August day there means high afternoon temperatures, and the vineyards sit exposed without shade. Combined with only two aid points per bike lap, at which you have to stop yourself, a tested drinking and electrolyte plan becomes this race's single most important preparation.

The priorities follow: long rides of five to seven hours with back-loaded climbing (flat at the start and the ascents at the end, because that is exactly how the course is built); hill intervals of five to fifteen minutes on gradients around six per cent; brick runs of 30 to 60 minutes straight off those sessions; long flat runs at intended marathon pace rather than hill work; and open-water sessions over 3,800 metres in two laps so the distance is familiar in one piece.