5K Races in Castle Rock, Colorado 2026 — MyNextRace

There are 3 5K races in Castle Rock, Colorado in 2026. The next is the 8th Annual ☘️ShamROCK Stampede 5k & RRCA 10k State Championship☘️ on March 14.

Sat, Mar 14 · Castle Rock, CO Castle Rock

Road FREE 1k Kid's Dash5KRRCA State Championship 10K

From $0 Open Closing Soon

Sat, Jul 18 · Castle Rock, CO Castle Rock

Road 5k10kHalf Marathon

From $25 Open

Sun, Sep 20 · Castle Rock, CO Castle Rock

7th ANNUAL PAUL'S MYSTERY SHIP WALK TO END ALS

From $45 Open

5K Races in Castle Rock, Colorado