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    May 4-5, 2024          
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Come join us for year 3 of the FOLSOM 100-mile ultramarathon circumnavigating Folsom Lake! The Folsom 100 will start from Granite Bay state recreation area at Granite Bay main beach 5:00 am on May 4th, 2024. 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. There will be a 54-mile race that 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 a shuttle this year for an additional $15 at signup. There is also a 100-mile 2-person relay! Grab a friend or loved one and both earn a buckle! The switch out will take place at the Skunk Hallow Parking lot in Pilot Hill.  Sign up fast and earn your buckle! The 20 mile (well almost 20) is always challenging with 9.4 miles between aid stations and through the Meat Grinder! This will start at Granite Bay and Finish at ADO. This is our third year and hope to show everyone that signs up a great time! 






  • Granite Bay - start

  • Rattlesnake SRA - 9.4 miles

  • Cardiac Hill - 15.96 miles

  • Auburn Overlook Park (drop bag) - 18.46 miles

  • Cool (drop bag) =25.86 miles          

  • St. Florian road - 32 miles

  • Rattlesnake bar - 44 miles 

  • Skunk Hallow (drop bag ,2-person Relay switch out & 53-mile finish!) - 53 miles 

  • Magnolia -64 miles

  • Skunk Hallow - 74 miles

  • Old Salmon Falls staging area (water only) - 78 miles

  • Browns Ravine - 89 miles

  • Granite Bay - FINISH! 100 miles

The race is mostly trails except for about 13 miles of pavement. Ten of those miles

are a challenging road section from mile 34-44. The other 3 miles are paved trails

and sidewalk in the last 5 miles of the race. The trails are rolling hills with the exception

of two big climbs.   



  • Buckles for all 100-mile finishers 

  • Special buckle for sub-24-hour finish

  • Buckles for 100-mile relay finishers (2 per team)

  • Medals for all 54- and 20-mile finishers

  • Special awards for first place finishers in all distances (male/female)

  • Shirts for all participants

  • 5 year and 10-year awards



  • :100 MILES - 100 Miles around Folsom Lake in Folsom California! Point to point with only one out-n-back!

  • : 100 MILE 2 PERSON RELAY - Leg one 54 miles (harder), leg two 50 miles (easier)

  • : 54 MILES 

  • : 20 miles Granite Bay to Auburn Overlook Park!

Runner Requirements:

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

      - No trekking poles

      - 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.


You will be able to park your car at the start line Saturday and Sunday of the race. There is a $14 parking fee that can be paid at packet pick up. Parking pass will work for all parks your crew my visit during the race. 


Packet pickup:

  Granite bay at Folsom Lake. This is also the start line location. For google or apple maps search Granite Beach in Newcastle.

Charity: Some proceeds from the Folsom 100 will be donated to The Upper Room Dining Hall

 Please visit their website to make donations: 

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!









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