Half marathonRoad🇺🇸 Boise, United States

Boise Half Marathon

Sunday, 20 June 2027In 8 months · Start 07:00

Official site

A flat, shaded half on the paved Boise River Greenbelt, starting and finishing at Payette Brewing.

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Facts checked 11 Oct 2026 against boisemarathon.com.

Elevation gain

35 m

Flat · ↓ 35 m

Start altitude

824 m

above sea level, from terrain data

Temp at start

14°C

Peaks around 23°C

Entry fee

≈ $20

Open entry

Finishers

—

typical year

Course

Out and back

Cut-off: check site

Getting thereFly into BOI (Boise), about 5 km from the start

Course map

A detailed route is not available for this race yet. The marker shows the race location.

Elevation profile

Flat: about 35 m of climbing and 35 m of descent. A detailed profile isn’t available for this race yet.

Race-day weather

At start

14°C

Peak during race

23°C

Humidity

45%

Chance of rain

Wind

10 km/h

Race day in past years

Historical averages for 20 June ±3 days, 2016–2025, from 07:00 for 5 hours (70 days sampled). Source: Open-Meteo / ERA5.

What time could you run here?Adjust your goal time for this course’s hills and typical race-day weather.Race time calculator →

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<a href="https://irun42.com/race/boise-half" title="Boise Half Marathon on iRun42"><img src="https://irun42.com/badge/boise-half.svg" width="300" height="120" alt="Boise Half Marathon: course, elevation and race-day weather on iRun42" /></a>