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Horsetooth Swims

Name: Horsetooth Swims
Start: 2026-09-13
End: 2026-09-13
Location: Fort Collins

Fort Collins, Colorado, United States

calendar_today 13 Sep, 2026

pool Water sports

language Official Website

sell $25.00 – $100.00

About the Event

The Horsetooth Swims are held in the of Horsetooth Reservoir, located in the majestic foothills west of Fort Collins at 5430 feet above sea level. The Horsetooth Swims have been an annual event since 1999. There are multiple swims occurring simultaneously as part of the Horsetooth Swims. 10K swim (the original): The 10K swimmers (and paddlers) start at Satanka Bay (north end) and swim to South Bay swim beach. 2.4M swim: The 2.4M swimmers start and finish at the South Bay swim beach and swim a two loop course. 1.2M swim: The 1.2M swimmers start and finish at the South Bay swim beach and swim a one loop course. Youth swims: The Youth swims consist of 1000m and 250m swims are out/back swims and are meant as an introduction to open water swimming The Horsetooth Swims are a fundraiser for Partners mentoring Youth to create and support one-to-one mentoring relationships between positive adult role models and youth facing challenges in their personal, social, and academic lives. Buy Horsetooth Swims Merchandise Here! For more information, visit our webpage at http://www.horsetoothswim.com

Races Offered

1.2M Swim (7 left)

Sep 13, 2026

straighten

Distance — 0K

terrain

Type — Water sports

timer

07:00

sell

$85.00

1000 m Swim (20 left)

Sep 13, 2026

straighten

Distance — 1K

terrain

Type — Water sports

timer

07:00

sell

$25.00

2.4M Collegiate

Sep 13, 2026

straighten

Distance — 0K

terrain

Type — Water sports

timer

07:00

sell

$90.00

2.4M Swim (31 left)

Sep 13, 2026

straighten

Distance — 0K

terrain

Type — Water sports

timer

07:00

sell

$100.00

250 m Swim (21 left)

Sep 13, 2026

straighten

Distance — 0.2K

terrain

Type — Water sports

timer

07:00

sell

$25.00

Weather History

These values represent the 3-year monthly averages for September in Fort Collins.

thermostat Temperature

11.0° / 27.0°

wb_sunny Feels like

8.7° / 23.9°

light_mode Avg sunshine hours

11h 16m

water_drop Avg rainfall

0.9 mm

ac_unit Avg snowfall

—

air Avg wind speed

8.2 km/h (Light breeze)

opacity Sweat loss rate

Moderate

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (5.0)

humidity_mid Humidity

47.9%

wb_twilight Sunrise

06:41

nightlight Sunset

19:07

About Fort Collins

Learn more about the host city, Fort Collins.

Fort Collins is a city of about 170,000 in north central region of the western U.S. state of Colorado. The seat of Larimer County, the city lies 59 miles (95 km) north of Denver on the Cache La Poudre River at the eastern edge of the Front Range foothills. Fort Collins is the home of Colorado State University and is a major research center.