EVENTS

September 2025

Sun 7

September 7 @ 7:00 am - 4:00 pm

Horsetooth Open Water Swim 2025

Horsetooth Reservoir 1087 county road 23, fort collins, CO, United States

Horsetooth Open Water Swim
September 7th, 2025
Fort Collins, Colorado

$20 – $110

Sun 7

September 7 @ 7:00 am - 4:00 pm

Horsetooth Open Water Swim 2026

Horsetooth Reservoir 1087 county road 23, fort collins, CO, United States

Horsetooth Open Water Swim
September 6th, 2026
Fort Collins, Colorado

$20 – $110

Sun 7

September 7 @ 8:00 am - 8:20 am

Denver Rocks Run

City Park 2001 Colorado Blvd, Denver, CO, United States

Wed 10

September 10 @ 9:00 am - 9:30 am

Northridge Elementary Fun Run

Northridge Elementary School 555 Southpark Road, Highlands Ranch, CO

Northridge Elementary
September 10, 2025
Highlands Ranch, CO

Wed 10

September 10 @ 9:00 am - 9:30 am

Northridge Elementary Fun Run 2026

Northridge Elementary School 555 Southpark Road, Highlands Ranch, CO

Northridge Elementary
September 9th, 2026
Highlands Ranch, CO

Fri 12

September 12 @ 4:00 pm - 4:15 pm

Hawk Invitational – Pre-State

Fehringer Ranch W. Quincy Ave. and S. Simms St., Morrison, CO 80465, Morrison, CO

Hawk Invitational MS XC
Hosted By Summit Ridge MS
Sept 19, 2025

Fri 12

September 12 @ 4:00 pm - 4:15 pm

Hawk Invitational – Pre-State 2026

Fehringer Ranch W. Quincy Ave. and S. Simms St., Morrison, CO 80465, Morrison, CO

Hawk Invitational MS XC
Hosted By Summit Ridge MS
Sept 19th, 2026

Sat 13

September 13 @ 8:00 am - 8:30 am

NedNed Trail Fest 2025

Nederland, CO

NedNed Trail Fest
September 13th, 2025
Nederland, CO

$35 – $85

Sat 13

September 13 @ 8:00 am - 8:30 am

NedNed Trail Fest 2026

Nederland, CO

NedNed Trail Fest
September 12th, 2026
Nederland, CO

$35 – $85

Sat 13

September 13 @ 9:00 am - 9:20 am

Heroes and Villains Team Hope 5K Walk and Run

Central Park Central Park Blvd & MLK Jr. Pkwy, Denver, Colorado

Heroes vs Villains 5K
September 13th, 2025
Denver, CO