Overview
The Dark Divide 100 Mile Endurance Run isn’t just another ultramarathon. It’s a test of grit, wilderness skill, and unshakable willpower. With steep ascents, rocky technical singletrack, and vast stretches of remote terrain, this race asks everything of you—and then some.
Runners will climb and descend over 26,000ft as they navigate wild ridgelines, deep forests, and long miles between aid stations. The Dark Divide is not for beginners—it’s a brutal, beautiful, bucket-list challenge that will push you to your edge and reward you with jaw-dropping views, camaraderie, and the thrill of finishing one of the hardest 100 milers out there.
Friday, September 5, 2025
Registration
Opens
Jan 1, 2025, 12:00 AM
Closes
Aug 31, 2025, 11:59 PM
Registration Fee
$300

Hard Rock Qualifier

UTMB Index Qualifier
Official race details:
This race is Trail Mix Fund eligible!

The Trail Mix Fund helps remove barriers in trail racing by covering race entry fees for under-served and under-represented runners, creating a more diverse and welcoming start line.
Course
Distance:
100
M
Course type:
Unknown
Elevation gain:
▲
26,000 ft
Elevation loss:
▼
26,000 ft
Max altitude:
6,080 ft
Start time:
Sep 5, 2025
5:00 AM
Cutoff time:
100M, 48HR overall, final cutoff at 5:00AM Sunday September 7, 2025
Course Description
The Dark Divide course is a rugged journey through some of Washington’s most dramatic backcountry. Expect endless climbs, big descents, exposed ridgelines, and over 75% technical singletrack. You’ll travel through the Roadless Area where aid stations are up to 16 miles apart and where course markings are minimal to preserve the wilderness feel. This is a course where navigation matters, your legs will scream, and your heart will soar.
Stunning views of the Dark Divide Wilderness
Remote alpine ridges with vast horizons
Long, steep climbs that test every ounce of endurance
Minimal course markings for true backcountry racing
Logistics
Start & Finish at Cispus Learning Center Pavilion (near Randle, WA)
Accessible via US-12; approx. 2 hrs from Portland, 2.5 hrs from Seattle
Parking on-site at Cispus Learning Center Pavilion
Bunkhouses available for reservation at Cispus Learning Center for $45; camping allowed on-site; nearby RV options
Driving Directions
Aid Stations
Aid stations are spread far apart, some as long as 16 miles. They provide standard ultramarathon fuel, hydration, and medical support, though the remoteness makes every stop vital.
See full details: Dark Divide 100 Aid Stations
Race Requirements
This race requires advanced ultramarathon experience and wilderness competency. Runners must be able to handle long stretches without aid, technical terrain, steep climbs, and self-navigation.
Trail Work
Runners must complete 8 hours of trail or habitat restoration, or other qualified volunteer service, and submit documentation before check-in.
Qualifying Races
To register, runners must show verifiable completion of specific challenging ultras, including a 100M with 15,000ft gain, a 100K with 10,000ft gain, or two 50M with 7,000ft gain. Alternative discretionary approval may be granted by Wonderland Running with GPX verification.
Mandatory Gear
Runners should carry gear suitable for wilderness survival and long stretches without aid.
Headlamp with extra batteries
Rain gear and thermal layer
Navigation tools (map, compass, GPS)
Adequate hydration system
Emergency nutrition and supplies
Policies
No refunds (check UltraSignup for details)
Transfers allowed under specific conditions
Event operates under US Forest Service Special Use Permit
Mandatory pre-race check-in and safety requirements
Event Details
Drop Bags
Drop bags may be checked in during packet pick-up on Thursday September 4, 2025 from 3:00PM to 6:00PM. Bags left behind after the race will not be mailed back, so plan accordingly.
Bib Pick-up
Bib pick-up takes place at Cispus Learning Center on Thursday September 4, 2025 from 3:00PM to 6:00PM. Race morning check-in is also available Friday September 5, 2025 from 4:00AM to 4:30AM.
Schedule
Friday, September 5, 2025
5:00AM – Runner check-in at Cispus Learning Center Pavilion
6:00AM – 100M race start
All day – Aid stations open and crew access at designated points
Saturday, September 6, 2025
5:00AM – Runner check-in for 100K
6:00AM – 100K race start
All day – Aid stations and crew support along the course
Sunday, September 7, 2025
6:00AM – Runner check-in for 50K and 14M Fun Run
7:00AM – 50K race start
8:00AM – 14M Fun Run start
12:00PM – Food and celebration at the Pavilion
7:00PM – Final 50K cutoff
8:00PM – Closing ceremony and volunteer celebration
Cancelations & Deferrals
Please refer to Wonderland Running's website for cancelation policies.
Dogs
Dogs are not permitted on the race course or at aid stations for safety reasons.
Crew, Pacers & Spectators
Crew and visitors are welcome at designated aid stations and at the Cispus Learning Center start/finish area. Due to the remoteness of many aid stations, travel times can exceed two hours on forest service roads. Crews must follow all rules and respect wilderness restrictions.
Volunteers
Volunteers are encouraged to help with aid stations, registration, and festival logistics. Interested parties can sign up at the race website.
Volunteer opportunities include:
Aid station support
Check-in assistance
Course marshaling
Setup and cleanup
Please reach out to wonderland.running.pnw@gmail.com for more information.
Charity & Beneficiary
Proceeds from the Dark Divide Trail Races benefit Silver Star Search & Rescue, All Play/Elementary Facilitation Program at Cispus Learning Center, and the White Pass Scenic Byway nonprofit. Learn more at https://www.wonderlandrunning.com.
Land Acknowledgement
The Dark Divide Trail Races take place on the ancestral lands of the Cowlitz (Mishalpam, Táytnapam, Sλpúlmx), Xwáłxwaypam (Klikitat), and Yakama peoples, who have stewarded this region for millennia. We honor and respect their enduring connection to these lands.
About
Wonderland Running
Wonderland Running is a quirky, community-first trail race organization based in the Pacific Northwest, bringing creativity, inclusivity, and adventure to every event. Officially founded in 2019, but with roots in DIY group runs long before that, Wonderland Running was born out of founder Sean Harrasser’s deep love for wild places and his solo, unsupported circumnavigation of the Wonderland Trail around Mount Rainier. Since then, the organization has evolved into a passionate crew of runners, mischief-makers, and outdoor enthusiasts who are dedicated to crafting memorable race experiences in truly magical settings.
The Wonderland Running team is made up of ultrarunners, artists, race directors, educators, tech wizards, and outdoor lovers who embrace the spirit of trail running in all its unpredictable, joyful, and humbling glory. With job titles like Executive Bad Hill Idea Conspirator and Master Hill Technologist, their ethos is as much about fun and self-expression as it is about fitness and finish lines.
Based in Oregon, with team members spread across Redmond, Bend, Portland, and Hillsboro, Wonderland Running is at the heart of the PNW trail scene. Whether you’re a seasoned ultrarunner or showing up to your first trail race, you’ll find a warm welcome, a clever hill pun, and an unforgettable experience waiting at the start line.
For those looking to connect with trail running beyond the stopwatch, Wonderland Running offers something rare: a race company that balances soulful exploration, creative expression, and genuine community.