Mercer County Half Marathon
Flat farm roads out of Robbinsville Community Park, with a hard 3 hour cutoff that makes this central New Jersey half a genuine pace commitment.
Quick facts
- Hard 3 hour cutoff, roughly 13:44 per mile with no extensions.
- Flat USATF certified course on open country roads.
- Pace groups posted from 1:40 to 3:00.
- Starts and finishes at Robbinsville Community Park, not in Trenton.
Is registration open for the 2026 Mercer County Half Marathon?
Registration for the 2026 Mercer County Half Marathon is open.
About the Mercer County Half Marathon
The cutoff defines this race. Three hours means about 13:44 per mile with no grace, which is stricter than most half marathons and filters the field accordingly. It has run since 2019 out of Robbinsville Township, despite the county name, and recent editions have finished around 300 to 350 runners.
Course
A USATF certified loop on mostly flat country roads through Mercer County farmland, passing the historic Robbin's House. Roads stay open to traffic with police and flaggers at intersections, so runners share the surface. Beast Pacing fields groups from 1:40 through 3:00, which is useful given the cutoff.
Race-day weather
Early September in central New Jersey is often humid at an 8 a.m. start, with temperatures climbing through the morning. Open farmland means sun exposure for most of the route and very little wind protection.
Past Mercer County Half Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Sunday, September 6, 2026 | Upcoming | — |
Mercer County Half Marathon FAQ
When is the Mercer County Half Marathon?
The 2026 Mercer County Half Marathon is on Sunday, September 6, 2026.
Is registration open for the 2026 Mercer County Half Marathon?
Registration for the 2026 Mercer County Half Marathon is open. View the official registration details at runsignup.com.
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