New Hampshire Triathlon Calendar 2025-2026

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Explore the best triathlons in New Hampshire for 2025-2026! Our updated list features 94 exciting races across the region. Find your next race in New Hampshire below and join the running community at these great events!

August 2025
Aug
30
Saturday

Black Bear Trail Races

Trail Run 4 mi 23 km 50 km
Aug
30
Saturday

Run Your Buns Off 4.2 Miler

4 mi
Aug
30
Saturday

Stag Stampede 5k

5 km
Aug
31
Sunday

Swanzey Covered Bridges Half-Marathon

21 km
September 2025
Sep
1
Monday

Labor Day Francestown 5

5 km 5 mi
Sep
1
Monday

Race to Serve Labor Day

5 km 10 km
Sep - Oct
4-9
Th - Th

Fall Trail Running

Trail Run 5 km
Sep
6
Saturday

Miles For Meals 5k - Nashua

3 km 5 km
Sep
6
Saturday

Plaistow Community YMCA 5K Road Race

5 km
Sep
6
Saturday

Strides for Diabetes 4K Run

4 km
Sep
7
Sunday

Run to Fall 5k - Northwood

Trail Run 3 km 5 km
Sep
7
Sunday

Operation Delta Dog - 5K

5 km
Sep
7
Sunday

9/11 Heroes Run - Exeter, NH

5 km
Sep
7
Sunday

Granite Gorge Yo-Yo Run

Trail Run 5 mi
Sep
7
Sunday

Tri-City Cars 5k

5 km
Sep
12-13
Fr - Sa

WCRC Reach the Beach Relay

Sep
13
Saturday

Call to Duty Memorial 10K

10 km
Sep
13
Saturday

Mandy's Angels Paws for a Cause 5K

5 km
Sep
14
Sunday

Pisgah Mountain Trail Races

Trail Run 23 km 50 km
Sep
14
Sunday

Veterans Count Nashua 5k Fun Run & Walk

Trail Run 5 km
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