There are 2 running races in Glendora, California in 2026. The next is the Dalton Canyon Ultra on February 6. Distances include 5K races, trail runs.

Dalton Canyon Ultra

Sat, Feb 6 · Glendora, CA Glendora
Trail Dalton Canyon 10K SoloDalton Canyon 50K: 4 Person RelayDalton Canyon Ultra 50K Solo (EARLY START) +1