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Upcoming Half Marathon Races Near Merced County, CA in September, 2025

Diablo Trail Run

Clayton, CA

Sunday, September 7th, 2025

10 Miles

Half

Marathon

Trail

Fast

View details for race Diablo Trail Run

Alameda Island Running Festival

Alameda, CA

Sunday, September 21st, 2025

Half

10K

5K

View details for race Alameda Island Running Festival

National Coffee Day: Run for Coffee SAN FRANCISCO

San Mateo, CA

Saturday, September 27th, 2025

5K

10K

Half

Trail

View details for race National Coffee Day: Run for Coffee SAN FRANCISCO

National Singles Day: Singles & Friends Running...

San Mateo, CA

Saturday, September 27th, 2025

5K

10K

Half

View details for race National Singles Day: Singles & Friends Running Club SAN FRANCISCO

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