Overview
This is a true Pacific-Northwest winter classic: four 25-mile loops through moss-covered rainforest, past mirror-smooth lakes, and up the 2,410 ft summit of Mount Constitution, twice by day and twice by headlamp:
Charge beneath moss-draped firs while sea mist drifts in from Puget Sound and a wood-fired pizza party waits back at camp. Orcas Island 100M blends big-mountain vert with all-weekend camaraderie. Climb 26,000ft over four punishing 25-mile loops, tag the stone tower atop Mount Constitution for extra bragging rights, and share sunrise views with new friends around every aid station fire. Volunteers learn your name, pacers join after mile 25, and Sunday’s awards feel like a family reunion; hoodie, buckle, happy tears included.
8
days
1
hours
4
minutes
11
seconds
Thursday, September 4, 2025
Registration
Opens
TBD
Closes
TBD
Registration Fee
$480
UTMB Index Qualifier
Official race details:
Important
↳ This race requires advanced ferry reservations.
Course
Distance:
100
M
Course type:
Unknown
Elevation gain:
▲
26000
Elevation loss:
▼
26000
Max altitude:
Unknown
Start time:
Sep 4, 2025
8:00 AM
Cutoff time:
36HR
Course Description
The 25-mile loop leaves Camp Moran and circles sparkling Cascade Lake before climbing steep switchbacks to Mount Constitution’s 2,400ft summit. Rugged singletrack rolls through old-growth cedar, fern-lined ridges, and mossy rock outcrops with sweeping views of the Salish Sea, Olympic peaks, and snow-capped Mount Baker. Slick roots, leaf-strewn descents, and possible snow flurries keep effort honest. Each lap ends back at camp for pizza, cheers, and a check-in with your crew.
100M runners complete four identical loops with optional Tower Club stair climb inside the summit stone tower on every lap.
Key Highlights
Single-track almost start-to-finish: root-latticed switchbacks, slick granite, and fast lake-shore cruises
Expect fog, rain, or snow, plus optional Tower-Club detour (53-ft stone tower climb) each lap
Logistics
Driving Directions
Parking
Parking is very limited at Camp Moran. Please unload then move to the overflow lot. Aid-station parking is also tight; follow crew-access rules per loop.
Passes Required
Lodging
Onsite
Camp Moran bunkhouses/cabins (Thu – Sun); tax included.
Nearby
Rosario Resort (3 mi), Doe Bay Resort, motels & Airbnbs in Eastsound; first-come winter camping loops Midway & South End inside park.
Aid Stations
Four fully stocked stations repeat every loop:
Mountain Aid Station at miles 5, 30, 55, 80 serves hot soup and hosts drop bags
Cascade Aid Station at miles 15, 40, 65, 90 fires up quesadillas and bacon with drop bags
Constitution Aid Station at miles 20, 45, 70, 95 offers broth and sushi rolls plus drop bags
Camp Moran at miles 25, 50, 75 anchors the loop with handmade pizza and crew access
Each station enforces posted cutoffs to keep runners on schedule:
Mile Markers | Aid station | Loop cut-off (Sat 22 Feb) |
|---|---|---|
5, 30, 55, 80 | Mountain | 12:45 PM (mile 80) |
15, 40, 65, 90 | Cascade | 4:00 PM (mile 90) |
20, 45, 70, 95 | Constitution | 6:15 PM (mile 95) |
25, 50, 75, 100 | Camp Moran (finish) | 11:00 AM (mile 75) |
What's Included
Standard spread of water, Gnarly electrolytes, soda, fruit, PB&J, Oreos, candy, chips. Vegan-friendly. 🌱 This is a cupless race so bring your own flask/cup. First-aid & period products available. Drop bags allowed at every aid station.
Race Requirements
Trail Work
Eight hours of trail service (or $100 trail-steward donation) completed prior to race.
Qualifying Races
Runners must have completed an organized trail 50-miler or 100 K with ≥ 7 000 ft gain, or 100-miler.
Mandatory Gear
Headlamp + spare batteries
Waterproof shell & warm mid-layer
At least 1 L fluid-carry capacity
Whistle & emergency blanket (recommended)
Policies
No unauthorized pacer aid or crew assistance outside designated areas
Violating cutoffs or rules may result in a ban from future events
Event Details
Drop Bags
Label with name, bib, and station
Deposit at Camp Moran
Mountain Lake bags due Thu 09:00 PM; others by Fri 07:50 AM
Returned to lodge after stations close
Unclaimed bags held 30 days then donated
Bib Pick-up
Date | Time | Location |
|---|---|---|
Thu 02/20 | 4:00 PM – 7:00 PM | Camp Moran Lodge |
Fri 02/21 | 7:00 AM – 7:50 AM | Camp Moran Lodge |
Schedule
Thu 20
4:00 PM – 7:00 PM → Bib pick-up & drop-bag drop-off
5:45 PM → Pre-race briefing
Fri 21
7:00 AM – 7:50 AM → Runner check-in
8:00 AM → Race start
Sat 22
11:00 AM → Camp Moran cut-off (mile 75)
12:45 PM → Mountain cut-off (mile 80)
4:00 PM → Cascade cut-off (mile 90)
6:15 PM → Constitution cut-off (mile 95)
8:00 PM → Official finish cut-off*
Sun 23
8:00 AM → Breakfast & social
9:00 AM – 10:30 AM → Awards ceremony
Cancelations & Deferrals
No refunds or bib transfers.
If canceling:
31+ days before = 50% race fee credit + 100% of extras
7–30 days = 50% race fee credit + 50% of extras
<7 days = no credit
Cancellation by Rainshadow due to weather, fire, or other = 50% credit.
Dogs
Leashed dogs are welcome at the start / finish and crew-accessible aid stations but not allowed to accompany runners on course. Owners must pack out waste.
Kids
Children may stay overnight in the Camp Moran bunkhouses for a flat $250 weekend fee. There is no separate kids race but young supporters are encouraged to cheer and enjoy finish-line pizza.
Crew, Pacers & Spectators
Crew may access Cascade and Camp Moran on all loops, Mountain on Loops 2, 3, 4, and Constitution on Loop 4, weather permitting:
Loop 1
Crew access not allowed, except Cascade (mile 15) & Camp Moran (mile 25).
Loop 2 through 4
Crews welcome at Mountain, Cascade, Camp Moran. Road-condition dependent on Constitution for Loop 4.
Discover Pass must be displayed at every park lot and crews must follow volunteer parking direction. Car-pool strongly advised.
Volunteers
Rainshadow Running thrives on volunteer magic. Shifts range from early-morning check-in to full-day aid-station gigs. Perks include free food, finish-line drinks, and credit toward a future Rainshadow race. Sign up by emailing info@rainshadowrunning.com.
Charity & Beneficiary
No specific beneficiary listed; Rainshadow Running donates separately to Washington trail-maintenance groups each season.
Land Acknowledgement
Moran State Park lies within the ancestral homelands of the Coast Salish peoples, including the Lummi, Saanich, and Samish Nations, who have stewarded these islands since time immemorial.
About
Rainshadow Running
Rainshadow Running is known for hosting some of the most scenic, challenging, and well-loved trail races in the Pacific Northwest. Since 2006, we've brought runners together on rugged mountain trails, coastal bluffs, and remote desert ridges, places that inspire awe and demand grit.
Our races are more than just miles; they’re celebrations of community, nature, and the wild beauty of the land. Whether you're chasing a PR or just here for the post-race party with wood-fired pizza and bluegrass music, you're part of the Rainshadow family.
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