Delaware Triathlon Calendar 2025-2026

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Explore the best triathlons in Delaware for 2025-2026! Our updated list features 55 exciting races across the region. Find your next race in Delaware below and join the running community at these great events!

August 2025
Aug
14
Thursday

I Thought You Said RUM

5 km
Aug
16
Saturday

Middletown Olde-Tyme Peach Festival 5K

5 km
Aug
16
Saturday

Broad Creek Bash 5K Run/Walk

5 km
Aug
17
Sunday

Shuck Cancer 5K

5 km
Aug
17
Sunday

Fire Fightin' 5K Run/Walk

5 km
Aug
21
Thursday

Believe in Tomorrow 5K

5 km
Aug
23
Saturday

Rusty Rudder 5K

5 km
Aug
31
Sunday

Summer's End 5k

5 km
Aug
31
Sunday

Running Under the Influence

5 km
September 2025
Sep
6
Saturday

Gary P. Lister Bottle & Cork Ten Miler

5 km 10 mi
Sep
13
Saturday

Gavin and Bryson Blount Memorial 5K

5 km
Sep
14
Sunday

Great Human Race

5 km
Sep
20
Saturday

DOCF Teal Ribbon 5K Run-Walk

5 km
Sep
20
Saturday

Harvest Hustle 5k Run

5 km
Sep
21
Sunday

Crushin' It for a Cure 5k

5 km
Sep
27
Saturday

Ultra Trail DE

Backyard Ultra 6 mi
Sep
27
Saturday

Hornet Hustle Fall Fest 5k

5 km
Sep
28
Sunday

Faithful Friends 5K

5 km
Sep
28
Sunday

Bear Trail Half Marathon

Trail Run 10 km
Sep
28
Sunday

Dogfish Dash

3 km 6 km
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