Race guides

Pick your race: we combine its checked conditions — water, course and weather — with our tools.

IRONMAN 70.3 Cozumel

Cozumel, Mexico

Wetsuit Finder — Answer six questions, get wetsuit picks sized from each brand’s own chart.
Wetsuit Size Calculator — Already know the suit? Get its size straight off the brand’s chart.
Race-Day Gear Checklist — Never forget your timing chip again — a printable list built for your race.
Triathlon Watch Comparison — Battery life, open-water GPS and maps across the watches triathletes buy.
Race Nutrition Calculator — Carbs, sodium and fluid per hour — then the gels and bottles that add up to it.
Tri Bike Decider — Road bike with clip-ons or a full tri bike? Answer honestly and find out.
Finish Time Predictor — Your swim, bike and run paces turned into splits and a finish time, sprint to full.
Training Zones Calculator — Power, heart-rate and swim zones from one threshold test.
Goggle Finder — Polarized, mirrored, photochromic or clear? The right lens for where and when you swim.
Tri Suit Finder — Sprint or Ironman, sleeves or not: suits built for how you race, with the brand’s size chart.
Running Shoe Finder — Daily trainer, tempo shoe or carbon racer: shoes matched on the brands’ own specs.
Gear Budget Calculator — What a sprint, Olympic or 70.3 setup really costs, from makers’ list prices.
Smart Trainer Picker — ERG workouts, road feel or a small flat? Trainers scored on the makers’ own specs.