Indiana Triathlon Calendar 2025-2026

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Explore the best triathlons in Indiana for 2025-2026! Our updated list features 254 exciting races across the region. Find your next race in Indiana below and join the running community at these great events!

December 2025
Dec
13
Saturday

Grandview Half Marathon

5 km 13 mi
Dec
14
Sunday

Festivus Run

5 km
Dec
14
Sunday

Frosty Frolic - Fort Wayne

5 km
Dec
20
Saturday

Santa Run & Walk 5K

5 km
Dec
21
Sunday

Candy Cane Course - Indianapolis

5 km 12 km
Dec
24
Wednesday

Rudolph Run 5K - Shelbyville

5 km
Dec
24
Wednesday

Jingle Jog - Bluffton

5 km
January 2026
Jan
11
Sunday

FroMoMoFo 20 Miler

Trail Run 10 mi 20 mi
February 2026
Feb
7
Saturday

Cereal Killer Trail Run

Trail Run 15 km
Feb
14
Saturday

Frozen Trailfest

Trail Run 10 km
March 2026
Mar
14
Saturday

Tombstone 50 Trail Run

Trail Run 50 mi
Mar
21
Saturday

False Spring Trail Runs

Trail Run 10 km 13 mi
Mar
21
Saturday

OPSF 50/50 Trail Race

Trail Run 10 km 14 mi 50 km 50 mi
April 2026
Apr
18
Saturday

Carmel Marathon

5 km 10 km 13 mi 26 mi
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