Info for the 100K, 50-Miler, 25-Miler, 13. 5-Miler, 11. 5-Miler, and 5K Races

Information

The 100K starts at 5:00am, while the 50-miler & 25-miler both start at 7:00am on Saturday, June 14th, 2025.
The 13.5-miler (start time 7:00am) & 11.5-miler (start time 7:15am) will take place on Sunday, June 15th, 2025.
The 5K starts on Sunday, June 15th, 2025 at 7:30am.

Parking is free and included in your registration.

Questions? Ask the Race Director, Martin Sengo, by filling out the form at the bottom of this page.

Live Runner Tracking

Live runner tracking for all distances at www.ultralive.net

We will be using their timing equipment and timing chips for all athletes.

Course

The course consists of a 13.5-mile (North) loop and an 11.5-mile (South) loop, upon which runners will complete in the order of North, then South to achieve their total distance. Runners will start North on a 13.5-mile, counter-clockwise loop from Cool Firehouse, running two miles down the historic Western States trail, heading up Pig Farm trail/to the top of K2. then parts of Olmstead trail to the Ranch, then South on Olmstead to some amazing back country single track then to the Salt Creek Loop Trail south toward the American River and back up the various single track, The Ranch, then back to Cool. Next, they will follow an 11.5-mile loop from Cool Firehouse South down Knickerbocker trail to Blue Oak trail, Olmstead, various connectors and across Triple Creek to Knickerbocker, then South on Olmstead to the Rim Trail, to Pilot Hill, then Olmstead to Catecroft, hidden lake trails, back to Knickerbocker, and back to Cool. The course is extremely well-marked.

The 100K will go North 13.5, South 11.5. North 13.5, South 11.5. North to mile 10, then yellow ribbons (South finish) to achieve 62.2 miles.

The course consists of single track and fire roads.

100K elevation approximately 9000′
50-miler elevation approximately 6,700′
25-miler elevation approximately 3,350′
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 Pickup Options.

Option #1 will be on Friday afternoon (for all distances) 2:00 to 6:00pm on June 13th, 2025 at the start/finish Cool Staging Area (7200 Saint Florian Court, Cool, CA 95614).
Option #2 will be on race morning (100K, 50mi, 25mi) 3:45 to 7:00am on Saturday, June 14th, 2025 at the start/finish Cool Staging Area (7200 Saint Florian Court, Cool, CA 95614).
Option #3 will be on race morning (13.5, 11.5, 5K) 5:30 to 7:15am on Sunday, June 15th, 2025 at the start/finish Cool Staging Area (7200 Saint Florian Court, Cool, CA 95614).

Aid Stations

On the North 13.5 Mile Loop the aid stations are:
The Ranch at mile 4.5 (full)
Top of Dam Switchbacks at mile 8.8 (water only)
Knickerbocker at mile 10 (full)
The Ranch at mile 12.3 (full)
Cool Staging Area at mile 13.5 (full) start/finish area

On the South 11.5 Mile Loop the aid stations are:
Knickerbocker at mile 16 (full)
Pilot Hill at mile 19 (water only)
Catecroft at mile 20.5 (full)
Knickerbocker at mile 23 (full)
Cool Staging Area at mile 25 (full) start/finish area

Time Cutoffs

100K 37 hours
50-Miler 35 hours
25-Miler 35 hours
13.5-Miler no cutoff
11.5-Miler no cutoff
5K no cutoff

Why are the cutoff times so long? These race distances will be during the 100-Miler https://ultrasignup.com/register.aspx?did=117507

Pacers and Crew (100K & 50-Miler)

Pacers are allowed only after the runner completes the third loop (at mile 38.5).
Crews are restricted to the Cool Staging Area (Start/Finish) and may aid their runner after completion of each loop.

Drop bags

For the 100K, 50-Miler, & 25-Miler only. Locations are Cool & Knickerbocker. Drop bags will be collected at start/finish area on race morning 4:00am to 7:00am.