Alpe d'Huez Triathlon race guide: course, swim, bike and run breakdown

Start at Lake Verney, cold water (sometimes 17-19°C). Wetsuit mandatory. Sunrise sun angle can complicate sighting.

Altitude (700 m) adds slight respiratory discomfort for unacclimated athletes. Extended warmup recommended.

• Full wetsuit mandatory
• Cold-water training in prep
• Clear goggles or lenses if early start with oblique light

On Long format, the course strings the col du Glandon (1,924 m), col du Mollard, and the final ascent of Alpe d'Huez (21 hairpins, 1,100 m elevation in 13 km). It's a mountain specialist's race.

Strategy: impeccable pacing on the Glandon (high Z2), descent management, and saving juice for the 21 hairpins where you've got nothing left. High cadence (90+ rpm) is your best friend.

• 2 to 3 simulation col rides in specific phase
• High-cadence climbing work (aerobic recruitment)
• Compact or triple chainring almost mandatory (34-32 minimum)
• Fueling test at altitude (modified digestion)

The Long format runs out-and-back around Alpe d'Huez with a final climb. Very demanding after the bike, at 1,800 m altitude. The Short format runs entirely at resort altitude.

Strategy: forget the clock and run by feel / HR. Altitude imposes a 10-15 sec/km drop vs equivalent flat pace.

• Altitude acclimation 4-7 days before if possible
• Higher hydration (dry mountain air)
• Regular hilly run training in prep

Strategy: it's all in the bike

At Alpe d'Huez, the bike is 65% of total time. Bad bike management costs 30 min on the run. Golden rule: be fresh enough at the top to actually run.

For a first-timer Long: target high Z2 only on cols, accept losing places without panicking. Many racers blow up on the final ascent.

Logistics: not like other triathlons

Arrive 3-4 days early to acclimate to altitude. Lodging at Bourg d'Oisans (low) or Alpe d'Huez (high), book very early, limited spots.

Weather: July at 1,800 m can be hot in the morning and cold on the cols. Adaptable bike kit (arm warmers, windbreaker).