Running Races in Portsmouth, New Hampshire 2026 | Browse All Races

There are 4 running races in Portsmouth, New Hampshire in 2026. The next is the Market Square Day 10K 2026 on June 13. Distances include 5K races, 10K races, half marathons.

Market Square Day 10K 2026

Sat, Jun 13 · Portsmouth, NH Portsmouth

Road Market Square Day 10K

From $35 Open Closing Soon

Seacoast Cancer 5K Run/Walk

Sun, Sep 20 · Portsmouth, NH Portsmouth

Virtual 1 Mile Walking Loop5K Virtual Run/Walk5K Run/Walk

From $30 Closed

18th Annual Celebrate Pink 5K Run & Walk

Sun, Sep 27 · Portsmouth, NH Portsmouth

Virtual 5K Run & Walk - SILVER STAR (allows for Hope Chest Gift Cards)5K Run & Walk - Youth (under 14)Virtual Option +3

From $30 Open

Seacoast Half Marathon

Sun, Oct 25 · Portsmouth, NH Portsmouth

Road Seacoast Half Marathon

From $79 Open

Running Races in Portsmouth, New Hampshire — 2026

Market Square Day 10K 2026

Seacoast Cancer 5K Run/Walk

18th Annual Celebrate Pink 5K Run & Walk

Seacoast Half Marathon

All New Hampshire Races