August 8 - 9, 2020

Cool Moon Trail Races

7200 Saint Florian Court

Cool, CA 100K, 50 Miler, 25 Miler, 13.5 Miler, 11.5 Miler, 5K

This Event Took Place Sun. Aug 9, 2020

Cancelled Event


COVID-19 Updates

7/7/20 COVID-19 update

Due to permit restrictions, all distances 5K, 11.5-Miler, 13.5-Miler, 25-Miler, 50-Miler, and 100K have been canceled for 2020. There will strictly be a 100-Mile race with few entrants (separate event page). Runners please check your email for resolution process.

4/29/20 COVID-19 update

I’m pausing registration until further notice. This means you may still register for Cool Moon, but the pause acts like a Waitlist. Your credit card will not be charged at this time. Auburn State Recreation Area has cancelled all special events through June 7th. This may be extended. Cool Moon is a resilient race, so I intend to put it on as long as it follows the State and ethical guidelines. If the race is unable to occur, your registration will be rolled over to the 2021 event or you will have the possibility for a partial refund 75%-50% relying on if we move forward paying third parties for the event costs in early June.


The 100K, 50-miler & 25-miler start at 7:00am on Saturday, August 8th, 2020.
The 13.5-miler (start time 7:00am) & 11.5-miler (start time 7:15am) will take place on Sunday, August 9th, 2020.
The 5K starts on Sunday, August 9th, 2020 at 7:30am.

Questions? Ask the Race Director, Martin Sengo, by clicking the "Ask a Question" button on this page.

Course Description

The course consists of a 13.5-mile loop and an 11.5-mile loop, upon which runners will alternate to achieve their given distance. Runners will start North on a 13.5-mile, counter-clockwise loop from Cool Firehouse, east to Pig Farm and Salt Creek, north toward the American River and south back into Cool. Next, they will follow an 11.5-mile, clockwise loop from Cool Firehouse toward Northside School, to Knickerbocker, to the Rim Trail, past the radio towers, back to Northside School and Knickerbocker, and back to Cool. This course is not easy, do not take it lightly.

The course consists of single track and fire roads.

13.5-mile loop elevation approximately 2200'
11.5-mile loop elevation approximately 1150'

5k is half road and half trail. Run on asphalt road (west) from Knickerbocker Gate for 1.45 miles, check in at Knickerbocker A/S at mi 1.45, turn left on trail following yellow ribbons back to staging area. Course is long 3.43 miles.

5K elevation gain/loss 243 feet, lightly rolling with no noticeable climbs.

Packet Pickup

Packet Pick-Up will be Friday afternoon on August 7th, 2020 at The Aid Station in Auburn at 675 High Street between 3-6 pm. We will also have race morning packet pickup on Saturday, August 8th 5:00-7:00am and Sunday, August 9th 6:00-7:15am.


Shirts will be ordered on the 20th of July 2020. Therefore anyone who signed up after July 20th may not get the correct size due lack of availability.

Strava Course links

North 13.5 mi loop:

South 11.5 mi loop:

5K course:


All finishers of every distance will receive a finisher's medal and shirt.

50-mile finishers will receive a custom plaque.

100K finishers will receive a custom buckle.

Overall Male and Female winners of every distance will be awarded with a custom plaque.

Local time: 1:43 AM


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