Running Races in Greenfield, Massachusetts 2026 | Browse All Races

There are 2 running races in Greenfield, Massachusetts in 2026. The next is the Mutts & Mayhem on May 23. Distances include 5K races, marathons.

Sun, May 23 · Greenfield, MA Greenfield

OCR Small Dog (Up to 40 lbs)Large Dog (40+ lbs)Small Dog (Up to 40 lbs) +1

From $40 Open

Sun, Aug 1 · Greenfield, MA Greenfield

Triathlon Sprint TriathlonTwo Person Sprint TeamThree Person Sprint Team +9

From $120 Open

Running Races in Greenfield, Massachusetts — 2026