01Lac d'Allier, opening full swim
Swim economically rather than chasing the first buoy
A single calm loop of the Allier River at first light gives a controlled, low-resistance opening. Settle into a pace you can hold for the whole 3.8 km.
Settle by 400 m. Breathe on a fixed pattern.
02Lac d'Allier, final swim approach
Keep breathing composed towards transition
The fast opening kilometres along the Allier and across the Limagne plain are ideal for finding your aero position and rhythm. Use them to settle, not to spend.
Cap effort on the fast opening. Fuel before the climb starts.
03Montagne Bourbonnaise, early bike roads
Put a ceiling on the first climbs
The steady climb to La Guillermie averages 3.7% over 9.5 km, the course's defining ascent. Ride it to your planned power, not to the shade the switchbacks offer.
Hold target watts on the climb. Use the switchbacks to settle, not to surge.
04Cusset and surrounding hills, middle bike
Keep power below the cost of an early run collapse
A two-part descent from the course's high point leads through Ferrières-sur-Sichon, then technical sections into Arronnes before a long false-flat downhill to Cusset. Stay alert through the technical entries.
Brake early into technical village entries. Use the false flat to recover, not to coast.
05Côte Saint-Antoine, 2026 spectator climb
Let the climb cost only what it must
After fast, straight kilometres past Bost and Billezois to Lapalisse's château, the section from La Bruyère to La Croix Rouge is genuinely tougher than its profile suggests: rolling terrain, rougher road surface and very little shade.
Don't underestimate the energy cost here. Keep drinking through the exposed, shadeless stretch.
06Bourbonnaise return, final bike stage
Continue eating when the cycling effort accumulates
A familiar, flowing return along the Sichon River brings you back to Vichy. Finish planned nutrition and let cadence rise before the transition.
Finish the planned bottle. Let cadence rise before T2.
07Vichy riverfront, opening marathon
Give the legs time to become runners
The flat, fast run around Lac d'Allier and Vichy's parks is a relief after a climbing, rolling bike course. Use the first loop to settle rather than to make up time.
Shorten stride out of T2. Let the opening kilometre feel easy.
08Parc des Sources, marathon middle
Use the town's encouragement without changing the effort
Passing the same lake and parks a second time gives a clear read on how loop one's pace is holding after a demanding bike. Adjust deliberately here.
Compare loop two to loop one. Keep fuelling on schedule.
09Allier banks, difficult marathon stage
Protect cadence and fuelling when the day becomes long
The third loop is where a hard-ridden climb and rolling terrain start to show up in the legs. Manage effort rather than chasing a pace that's slipping.
Reassess goal pace honestly. Keep taking aid on schedule.
10Vichy finish streets, final marathon
Make a late increase only from what remains
The final loop finishes around the same lake and parks. If La Guillermie and the toboggan terrain were paced with restraint, this is where it pays off.
Decide the finish honestly. Save something for the last loop.