Lucky Peak Reservoir · Barclay Bay
Get calm before you get ambitious.
The reservoir's calm, clear water rewards an honest, controlled opening.
Seed honestly. Settle into rhythm.
Race Finder IRONMAN 70.3 Boise.
Race Intelligence · Boise, United States
IRONMAN 70.3 Boise.
Race Boise on your terms.
Lucky Peak Reservoir first. Then a 90 km ride from Barclay Bay into Boise. The day closes with two loops along the Boise River Greenbelt.
Boise, Idaho, showing the surrounding sagebrush landscape.
- Race day
- 24 Jul 2027
- Course
- Swim 1.9 km · Bike 90 km · Run 21.1 km
- Historical air
- 19–34°C
Your day in Boise
What could you race?
I’m Tom, the coach behind Sense Endurance Coaching. Tell me where you are now and I’ll show you what a strong day in Boise could look like.
The course behind your race
The fast way out of Lucky Peak is where patience matters most.
Boise gives you speed early on the bike, then asks you to carry good legs into a flat two-loop run. Treat the opening descent as free speed, not permission to raise the effort.
Lucky Peak · opening descent
Take the speed without chasing it.
A sweeping downhill out of the reservoir tempts an early charge. Settle into your target number rather than riding the descent's speed.
Cap opening effort. Fuel early.
Rural Boise to Julia Davis Park
Settle into the number you want to run off.
Finish planned nutrition through the rolling roads and neighbourhood streets before the downtown finish.
Stay patient. Finish planned nutrition.
Boise River Greenbelt · first loop
Make the first loop feel deliberately ordinary.
Let the shaded greenbelt opening feel easy, not fast.
Easy first aid station. Check posture.
Boise River Greenbelt · second loop
Only spend what is still there.
Only progress once the first loop has held together.
Stay tall. Choose the last move late.
What to check in race week
Check the current swim map, shuttle and bike-check logistics for Lucky Peak, the latest bike-course restrictions and the Greenbelt run layout. Rehearse how you will eat and drink once the opening descent is behind you rather than trying to do everything while the bike is moving fastest.
Forecast statusToo early for a forecast
A race-day forecast is not meaningful yet; check back closer to the event.
- Temperature
- 18.7–34.2°CDew point centred on 5.8°C
- Wind and gusts
- 7.2 km/hGusts up to 33.1 km/hPrevailing direction NW
- Rain likelihood
- Up to 15%Wet-surface uncertainty retained
Historical baseline, 2019–2025 · Open-Meteo historical archive · Updated 2026-09-14.Historical comparison only. This is not a forecast for 2027.
Make your finish prediction and I can send this plan to you in race week.
Your plan, in race week
Prepare for Boise
Build the legs.
Practise the decisions.
A finish range gives you something to work towards. The preparation is specific to this race: Practise letting speed rise while effort stays capped, then settling quickly into sustainable power on rolling roads. The useful Boise skill is not descending harder; it is arriving at the Greenbelt with enough restraint left to run both loops well.
I’m Tom. With Sense Endurance Coaching, I’ll build that preparation around your life, follow how you respond and adjust the work as you get closer to Boise.
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