May 6 - 7, 2023

Folsom 100

8000 Douglas Blvd

Granite Bay, CA 100 Miler, 100M 2 Per Rly, 54 miles, 20 mile

Registration closes: Mon, May 1 @ 11:59PM

Folsom 100!!

Come join us for the second annual FOLSOM 100-mile ultramarathon circumnavigating Folsom Lake! The Folsom 100 will start from Granite Bay state recreation area in the five percent parking lot at 5:00 am on May 6th, 2023. Runners will have 34 hours to complete the 100-mile loop around Folsom Lake. You will be starting from Granite Bay and traveling through, Loomis, Auburn, Cool, Salmon Falls, El Dorado Hills, Folsom Point and back to Granite Bay! We have combined large sections of our other races (Meat Grinder, Snowberry, Red Dragon, and Dead Truck) into this one EPIC route! The views around Folsom Lake and river canyons are stunning as you work your way through this incredible course. The 54-mile race will end at the Skunk Hallow Parking lot in Pilot Hill. Parking is very limited here and drop off/pick up is advised. There will be no shuttle. The 100-mile 2-person relay switch out will also take place at Skunk Hallow Parking lot in Pilot Hill. Don't miss out on the second year of the Folsom 100! Sign up fast and earn your buckle! Hurry spots are limited!


Granite Bay - start

Rattlesnake SRA - 10.4 miles

Cardiac Hill (water only) - 16.96 miles

Auburn Overlook Park (drop bag) - 19.46 miles

Cool (drop bag) =26.86 miles

St. Florian road - 33 miles

Rattlesnake bar - 45 miles

Skunk Hallow (drop bag) - 54 miles

Magnolia -65 miles

Skunk Hallow - 75 miles

Old Salmon Falls staging area (water only) - 79.3 miles

Browns Ravine - 90 miles

Granite Bay - FINISH! 100 miles


:100 MILES


: 54 MILES

Runner Requirements:

- Wear a reflective vest while on the road sections of the Folsom 100

- Have a minimum of one light on them 30 min prior to sunset until 30 min after sunrise.

-Stay on the shoulder of the road at all times

-Obey all traffic laws and park rules during the race

-Do not drop trash unless in a trash can!​


Pacing will be allowed starting at Auburn Overlook Park (ADO)

-Crews / spectators are asked to please avoid Rattlesnake Bar Recreation area as runners will be on Rattlesnake Bar Road during the race. D.O.T. has been generous to grant permission and we don't want to ruin that for next year. Click the website link for maps of aid stations and the route.


Please check our website for detailed maps!

20 Mile distance added!

Run from Granite Bay to ADO!


Hammer Nutrition products will be available at all aid stations. All runners will also receive samples with their race swag.
Hampton Inn & Suites Folsom - 155 Placerville Rd. Folsom, CA 95630.
USCryotherapy Sacramento

Why is this race so challenging?

While this route is filled with amazing views of the lake and fun singletrack don't be fooled. There are many challenging aspects to this 100 miler. You will work your way through Meat Grinder and arrive at Cardiac Hill as you climb to Auburn Overlook Park. You will then drop down to the American River Confluence and Find yourself at the bottom of the infamous K2 that will lead you into Cool California. In Cool you will take the Quarry trail down to the river again and work back up to Cool. After tackling those climbs you will need to find a way through the 10-mile road section! This section hits in about mid to late afternoon as things heat up so be ready! You will need a lot of water on this section! This year water will be available halfway through the road section. This will bring you to peninsula campground where you will catch the Darrington trail to Skunk Hallow parking lot. As the sun sets you will head out 10 miles to Magnolia Ranch and return back to Skunk Hallow. From here it's a 25-mile fun run to the finish back at Granite Bay where you started. I say that but you do need to be aware of the paved trail that crosses Folsom Dam in the last 5 miles! This race can heat up in the afternoon and cool off in the evening so come prepared for that. There are several sections with 10-mile gaps between aid stations that will need to plan for as well. This race was designed by Ray Sanchez and should not be taken lightly! Sign up and let's see what you've got!


ADO- 19.46 MI - 11:30AM
COOL - 26.86 MI - 1:00PM
FINISH - 103MI - 3:00PM


Hamton Inn and Suites is the official hotel of the Folsom 100! Hampton in and suites is located in Folsom California next to the Palladio shopping center. There are a lot of stores and restaurants close to the hotel. Visit click on the Folsom 100 page and look for a Hampton Inn and Suites link for a special discounted race rate! Keep in mind the hotel is 20 minutes from the start line in Granite Bay so give yourself time on race morning. Hampton Inn is excited to host racers for this event so please show them some love.


T-Shirt for all distances
100 mile belt buckle
Local time: 11:35 AM


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