62 runs, swims, rides and races in Colorado

From city marathons to local trail runs—find half marathon events in cities and communities throughout Colorado.

• Arvada (1)
• Aspen (3)
• Aurora (3)
• Boulder (1)
• Brighton (1)
• Buena Vista (1)
• Castle Pines (1)
• Centennial (3)
• Clear Creek County (1)
• Colorado Springs (12)
• Denver (3)
• Durango (2)
• El Paso County (1)
• Estes Park (3)
• Fort Collins (3)
• Fremont County (1)
• Fruita (2)
• Grand County (2)
• Grand Junction (1)
• Greenwood Village (1)
• Highlands Ranch (1)
• Huerfano County (1)
• Lakewood (1)
• Larimer County (1)
• Louisville (2)
• Park County (1)
• Parker (1)
• Salida (1)
• San Miguel County (1)
• Steamboat Springs (1)
• Westminster (2)
• Windsor (3)

Regional Clubs & Organizations