100K Info

Date: Saturday, July 8, 2023
Time: 5:00 am (no early start)
Location: Mount Ashland, Oregon
Cost: $160 before March 31st, $185 thereafter
Field Limit: 150
Qualifiers: SOB 100k = 4 UTMB points


Registration: Registration is available on-line only through ultrasignup.com beginning November 15th at 7 am. Registration will close June 15th, though we expect the event to fill well before then. Refunds of the registration fee (50%) will be available sixty days before the event.  No transfers or postponements.
Packet Pickup: We don’t have traditional race packets.  If you ordered a t-shirt or mug you may pick it up Friday at Rogue Valley Runners in Ashland between 3 and 6PM.  It is a great place to hang out with other runners and get pumped for Saturday’s event. We start signing in 100K runners at 4:15am, providing race bibs containing your timing chip.  If you didn’t pick up the shirt or mug you ordered on Friday it must be picked up before your race.
Directions to the Start: Take the Interstate 5 Mount Ashland exit (exit #6), located 10 miles south of Ashland and 5 miles north of the California/Oregon border. Follow the signs to the ski area located about 8 miles from the Interstate. If driving from Ashland, please allow at least 40 minutes driving time to get there.
Awards: Cowbells will be awarded to the top three in each age division as well as to the first man and woman overall. Results will be posted near the finish line. Complete results will be available on the SOB website by the end of race weekend.  Mugs to the finishers!
Age Divisions: Men and Women, 29 and under, 30-39, 40-49, 50-59, 60-69 and 70 and over.
Drop Bags: Drop bags will be available for 100K runners at Siskiyou Gap aid station (miles 8.5 and 21.5) and Potlicker aid station (miles 31.6 and 49.5). Note, you might want a headlamp and jacket when leaving Potlicker for the second time.
Cutoffs: Cut-offs are in effect for the 100K course. Runners must exit the aid station by the cut-off times listed below or they will be pulled from the event by the aid station captains. Aid station captains have the final word. Runners crossing the finish line after the final cut-off will not be scored in the results.
Heat: The second half of the course, from Potlicker on, can be hot.  We suggest you carry at least 1.5L of water.  We are adding an additional water supply on Hitt Road that wasn’t there in 2021.
Pacers and Crew: No pacers are allowed however family and friends are welcome to join the runner at the top of Mt. Ashland.  No crews are allowed as the access road is also a small part of the course.

100k Course

2018_100kSame as 50K course to the second time through Willamette Meridian. From there we head north on the Split Rock trail. After 3 miles head down the Wagner Glade Trail to the Potlicker aid station at 2060 (drop bags available), then down Potlicker. Potlicker takes you to Horn Gap Road. Head down the road, passing the Ricketty Aid Station, to 2060 then down to Wonder Trail. A climb will take you to Fell-on-Knee Trail where you will take a right, heading down to Hitt Road. Up Hitt Road, down 2060 to Horn Gap Road where another climb awaits up Ricketty. At the top of Ricketty a small section on FS roads will take you to No Candies Trail. Out No Candies to Road 2060 at Horn Gap, then a (comparatively) flat section of Road 2060 to the Time Warp Aid Station. Up Time Warp (yes this is a bitch climb) to the top of Mt Ashland, then a quick jaunt to the finish at the Mt. Ashland Lodge.

You don’t need to remember this. The course will be well marked!  We’ve learned our lesson in 2019…

View the interactive map (opens new window). Download the GPX file.

Read Torsten Heycke’s Race Report for a different take on the course..


Most aid stations will be stocked with electrolyte drink, gels, water, potatoes, chips, cookies, pretzels, candy and other ultra goodies. All aid stations are full service.


Awaiting you at the finish line will be plenty of refreshments plus lunch and a beer.  Please let us know your intent on eating with us at registration as it helps with our planning.


Here is the split chart from 2021 (a hot year) to help you plan your race: 2022 100K split sheet

Here is the split chart from 2019 runners, to help you plan your race: 2019 SOB Split Sheet

~10,500 feet

MILEAGE Section Total Drop Bag Cut-off
Start line to Willamette Meridian AS 5.0 5.0
Willamette Meridian AS to Siskiyou Gap AS 3.5 8.5 Yes
Siskiyou Gap AS to Jackson Gap AS 6.5 15.0
Jackson Gap AS to Siskiyou Gap AS 6.5 21.5 Yes
Siskiyou Gap AS to Willamette Meridian 3.5 25.0
Willamette Meridian AS to Potlicker AS 6.6 31.6 Yes Leave Willamette Meridian by 1:00pm (8 hrs)
Potlicker AS to Ricketty AS 4.8 36.4 Leave Rickety 1 by 2:45pm
Ricketty AS to Ricketty AS 7.2 43.6 Leave Ricketty 2 by 4:30pm
Ricketty AS to Potlicker AS 5.9 49.5 Yes Leave Potlicker 2 by 6:00pm (13 hrs)
Potlicker AS to Time Warp AS 5.5 55.0 Leave Time Warp by 7:30pm (14-1/2 hrs)
Time Warp AS to Finish 7.2 62.2!!! Finish by 10:00pm (17 hrs)

* Note: Siskiyou Gap and Potlicker are the designated drop bag aid stations in both directions.