How do I register for the Trinity Health Probility Ann Arbor Marathon?

Registration is handled by the organizer at runsignup.com.

Spectator Guide · Trinity Health Probility Ann Arbor Marathon

Trinity Health Probility Ann Arbor Marathon Spectator Guide

October 29, 2026 · 3 min read

Large marathon in Ann Arbor. Base at the start/finish area.

Date: Sunday, October 3, 2027
Location: Ann Arbor, MI
Distances: Marathon, Half Marathon, 10K, 5K, Marathon Relay, Half-Marathon Walk
Field size: About 3,000 runners
Registration: runsignup.com

The Trinity Health Probility Ann Arbor Marathon is a large field event in Ann Arbor. Spectators should base at the start/finish area.

Use the official parking and closure information. Arrive early.

Agree on a landmark outside the finish chute.

When is the Trinity Health Probility Ann Arbor Marathon?: Sunday, October 3, 2027.
How do I register for the Trinity Health Probility Ann Arbor Marathon?: Registration is handled by the organizer at runsignup.com.

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