Saturday, July 25, 2026 · Boise, ID, United States
143 days until race day
IRONMAN 70.3 Boise takes place in Boise, ID, United States as an IRONMAN 70.3 race. The race includes a reservoir swim, a demanding bike course with significant climbing, and finishes with a flat and fast run course.
Reservoir
1.9 km / 1.2 mi
Hilly
90 km / 56 mi
Flat
21.1 km / 13.1 mi
Get comfortable swimming in open water with limited visibility typical of reservoir conditions.
Prioritize climbing-specific bike workouts with sustained efforts at threshold to prepare for the demanding elevation.
Train for even pacing on flat ground with race-pace tempo runs and practice holding form when fatigued.
Test your fueling strategy during long brick sessions to find the right mix of calories and hydration for 70.3 miles.
Transition's AI coach builds a training plan specifically adapted for this course. Your plan accounts for the reservoir swim conditions, the hilly bike terrain, and the flat run profile — so you show up on race day fully prepared.
Your plan adjusts weekly based on your progress, recovery, and schedule changes.
Workouts target the exact demands of this course's swim, bike, and run profiles.
Nutrition rehearsal, taper optimization, and pacing strategy built into your plan.
“Transition has helped me improve my Ironman training more than any other method I've encountered in my triathlon journey. It's incredibly precise and personalized.”
Carlos Rebelo — Triathlete
Our AI-powered ironman 70.3 plan adapts to your fitness, schedule, and this specific course. Start training smarter today.
View IRONMAN 70.3 PlanTraining for IRONMAN 70.3 Boise requires a structured plan that addresses the specific course demands: a reservoir swim, hilly bike, and flat run. Transition's AI coach builds a personalized plan that adapts to your fitness level and progressively prepares you for these exact conditions.
IRONMAN 70.3 Boise takes place in Boise, ID, United States as an IRONMAN 70.3 race. The race includes a reservoir swim, a demanding bike course with significant climbing, and finishes with a flat and fast run course. The race takes place in Boise, ID, United States and attracts athletes from around the world.
Most athletes need 16-20 weeks of dedicated training for a IRONMAN 70.3. This allows sufficient time for base building, race-specific preparation, and a proper taper. Transition's AI coach can create a plan that fits your timeline and current fitness.
