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Triathlon Calendar near New Castle 2025-2026

Explore the top triathlons near New Castle for 2025-2026! We've gathered 58 exciting races in the area. Check out our detailed list below to find your next local race.

September 2025
Sep
13
Saturday

Parvin Anniversary Duathlon

Duathlon
Sep
13
Saturday

Chester County PrideRun/Walk

5 km
Sep
13
Saturday

Wings of Life 5K - Mullica Hill

5 km
Sep
14
Sunday

Marsh Creek Sprint Triathlon

Triathlon
Sep
20
Saturday

Susquehanna River Running Festival

5 km 10 km 13 mi
Sep
21
Sunday

Philadelphia Distance Run

5 km 13 mi
Sep
21
Sunday

Island Luau 5K

5 km
Sep
27
Saturday

Ultra Trail DE

Backyard Ultra 6 mi
Sep
28
Sunday

Miles for Migraine Pennsylvania

2 mi 5 km
Sep
28
Sunday

Faithful Friends 5K

5 km
October 2025
Oct
4
Saturday

Lisa’s Army Pumpkins in the Park 5K Run

5 km
Oct
4
Saturday

Run-a-Muck

Trail Run 5 km
Oct
5
Sunday

Rugby Run 5k

5 km
Oct
12
Sunday

Peace for Police 5k

5 km
Oct
18
Saturday

Delaware Trail Fest

Trail Run 12 km 24 km 12 hr
Oct
18
Saturday

Superhero for Hope Run/Walk 5K

5 km
Oct
19
Sunday

Delaware Distance Classic 15K

5 km 15 km
Oct
25
Saturday

Run the Vineyards - Halloween 5K

5 km
Oct
25
Saturday

GC Young Life Fall Costume Fun Run 5K

5 km
November 2025
Nov
8
Saturday

Rocky Run

5 km 10 mi 13 mi
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