How do I register for the Platte River Half-Marathon, Relay & 5k?

Registration is handled by the organizer at runsignup.com.

Spectator Guide · Platte River Half-Marathon, Relay & 5k

Platte River Half-Marathon Spectator Guide

October 29, 2026 · 3 min read

Large half marathon in Littleton. Base at the start/finish area.

The Platte River Half-Marathon is a large field event in Littleton. 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 Platte River Half-Marathon, Relay & 5k?: Sunday, April 11, 2027.
How do I register for the Platte River Half-Marathon, Relay & 5k?: Registration is handled by the organizer at runsignup.com.

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