Idaho Triathlon Calendar 2025-2026

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Explore the best triathlons in Idaho for 2025-2026! Our updated list features 66 exciting races across the region. Find your next race in Idaho below and join the running community at these great events!

November 2025
Nov
8
Saturday

So Good 5K Group Run/Walk

5 km
Nov
15
Saturday

Boise Half Marathon

Half Marathon
Nov
16
Sunday

Harvest Hustle - Nampa

5 km
Nov
22
Saturday

Turkey Trot 4k

Trail Run 4 km
Nov
27
Thursday

North Idaho Turkey Trot

5 km 10 km
Nov
27
Thursday

Boise Turkey Day 5K

5 km
Nov
27
Thursday

Harvest Hustle 5k - Mountain Home

5 km
Nov
27
Thursday

Turkey Day 5K - Caldwell

5 km
Nov
27
Thursday

Viola Turkey Trot

5 km
Nov
27
Thursday

Sweaty Yeti Turkey Trot

5 km 10 km
Nov
27
Thursday

Teton Valley Pig Trot

5 km
Nov
27
Thursday

Rigby Lake Turkey Trot

5 km
Nov
27
Thursday

Nampa Pumpkin Spice 5K

Trail Run 5 km
December 2025
Dec
6
Saturday

Holiday Hot Cocoa Hustle 5K

5 km
Dec
6
Saturday

Island Christmas Half

5 km Half Marathon
Dec
12
Friday

Dizzy Horse Backyard Ultra

Backyard Ultra 4 mi
Dec
13
Saturday

The Santa Run - Coeur d'Alene, ID

5 km 10 km
Dec
13
Saturday

Ugly Sweater 5k - Caldwell

5 km
Dec
20
Saturday

YMCA Christmas Run

2 mi 6 mi
January 2026
Jan
1
Thursday

Tesh 5K Fun Run

5 km
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