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Heart of Cool Trail Run

location_on

Cool, California, United States

calendar_today 17 Oct, 2026

directions_run Running

sell $20.00 – $70.00

About the Event

Are you looking for a fun run for a great cause? If so, HoC 5k, 10k and half marathon is just what you are looking for! Proceeds from this race go directly back to youth of BOMUSD (Black Oak Mines Unified School District) to inspire their future success through agriculture, engineering and VAPA (Visual and Performing Arts). In addition, a percentage of the funds will also be used to scholarship a child to attend Camp Taylor, a camp specifically designed for youth with heart disease.

Register by September 30 to receive a HoC cotton t-shirt with registration. All half marathon participants receive something new for 2025 (TBD). Check out our Instagram or Facebook page for a photo of the design.

This is a family friendly event and we highly encourage you to bring the whole family! We offer a family discount package for immediate family members for the 5k and 10k distance! If you want to participate in the event without your child, take advantage of our $8 per child - child care for children ages 3 and up! We will have a post race pancake breakfast.

The Heart of Cool Trail Run traverses some of the best trails Cool, CA and the Sierra Foothills have to offer. Run on the same trails as many of the famous local (and world renowned) events such as Western States 100 Mile, Way too Cool 50k, Rio Del Lago 100 Mile, and many more!

To reduce waste and the possibility of littering our trails, this will be a cup free event. Be sure to bring a cup or water bottle that can be refilled at aid stations.

Packet and bib pick up will be on Race Day.

Registration will be available online until the start of each event!

We can always use volunteers for this event. If you are able to lend a hand during the race, or the day before, please click on the Volunteer tab.

Races Offered

Trail Half Marathon

Oct 17, 2026

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Distance — 13.1 Miles

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Type — Running

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08:00

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$55.00

10k Run/Walk

Oct 17, 2026

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Distance — 6.2 Miles

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Type — Running

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08:30

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$35.00

5k Trail Run/Walk

Oct 17, 2026

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Distance — 3.1 Miles

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Type — Running

timer

09:00

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$30.00

10K

Oct 17, 2026

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Distance — 6.2 Miles

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Type — Running

timer

241 days remaining

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$35.00

10K - 17 & Under

Oct 17, 2026

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Distance — 6.2 Miles

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Type — Running

timer

241 days remaining

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$20.00

10k

Oct 17, 2026

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Distance — 6.2 Miles

terrain

Type — Running

timer

241 days remaining

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$50.00

10k - 17 & Under

Oct 17, 2026

straighten

Distance — 6.2 Miles

terrain

Type — Running

timer

241 days remaining

sell

$20.00

10k Run/Walk

Oct 17, 2026

straighten

Distance — 6.2 Miles

terrain

Type — Running

timer

241 days remaining

sell

$35.00

5K

Oct 17, 2026

straighten

Distance — 3.1 Miles

terrain

Type — Running

timer

241 days remaining

sell

$35.00

5K - 17 & Under

Oct 17, 2026

straighten

Distance — 3.1 Miles

terrain

Type — Running

timer

241 days remaining

sell

$20.00

5k

Oct 17, 2026

straighten

Distance — 3.1 Miles

terrain

Type — Running

timer

241 days remaining

sell

$50.00

5k - 17 & Under

Oct 17, 2026

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Distance — 3.1 Miles

terrain

Type — Running

timer

241 days remaining

sell

$20.00

5k Trail Run/Walk

Oct 17, 2026

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Distance — 3.1 Miles

terrain

Type — Running

timer

241 days remaining

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$30.00

Half Marathon

Oct 17, 2026

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Distance — 13.1 Miles

terrain

Type — Running

timer

241 days remaining

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$60.00

Half Marathon - 17 & Under

Oct 17, 2026

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Distance — 13.1 Miles

terrain

Type — Running

timer

241 days remaining

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$20.00

Trail Half Marathon

Oct 17, 2026

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Distance — 13.1 Miles

terrain

Type — Running

timer

241 days remaining

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$55.00

Virtual Runner

Oct 17, 2026

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Distance — Virtual Runner

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Type — Running

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241 days remaining

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$45.00

half marathon

Oct 17, 2026

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Distance — 13.1 Miles

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Type — Running

timer

241 days remaining

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$70.00

Weather Overview

These values represent the 3-year monthly averages for October in Cool.

Temp (°C)

Feels Like (°C)

thermostat 10.4° / 25.4°

wb_sunny 7.3° / 22.7°

Wind (km/h)

Humidity (%)

air 8.2 /

water_drop 49.1%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 10.4° / 25.4°

wb_sunny 7.3° / 22.7°

air 8.2 km/h

water_drop 49.1%

About Cool

Cool, formerly known as Cave Valley, is a small town in El Dorado County, California, about 40 miles (64 km) from Sacramento, the state capital. Cool is at an elevation of 1,532 feet.