Two non-identical laps from and back to Deep Creek: Loop 1 is the same route as the Plain 100K (via Maverick Saddle, Mad Lake/Hi Yu/Lost Lake/Blue Creek trails, a Klone Peak out-and-back, North Tommy, Lake Creek/South Tommy, and the hard climb to Tyee, then back through Maverick Saddle); Loop 2 (100 Mile only) runs from Deep Creek out to Chikamin Tie and back via Alder Ridge. No aid stations, no course markings, no pacers; the only aid permitted mid-course is a full resupply at Deep Creek between the two loops.
Non-uniform two-loop course: Loop 1 (shared with the 100K) and Loop 2 (100 Mile only) are different routes of unpublished individual length; the schema's single loop_distance_miles field cannot express this, so it is left null (see the multi_loop non-uniform-loop gap noted for Javelina). Total course length is informally "100+" miles; the 2026 UltraSignup listing describes "approximately 85 miles of trail and 20 miles of forest service roads" (~105 mi); a 2014 race-director report put the same course at "approximately" 106 miles; a third-party CalTopo track of the full loop measures 102.08 miles. All three figures are recorded; none is authoritative enough to be picked as canonical, so distance_miles uses the GPX-derived number and published_distance_value uses the midpoint of the race's own 85+20 breakdown. Elevation gain/loss is published only as a single combined “roughly 21,000 feet” figure, not split by direction; both fields are set equal on the inferred assumption that a loop course returning to its own start has closely matched gain and loss. The Klone Peak side-trip is an out-and-back spur off the North Tommy Trail portion of Loop 1, not a checkpoint, but is the course's documented high point (6,834 ft).
A 100+ mile (100 Mile) and 100K self-supported ultramarathon on U.S. Forest Service trails and roads in the Cascade Mountains near Plain and Leavenworth, Washington. There are no aid stations, no course markings and no pacers; runners navigate by written directions and a paper map, filter their own water from streams, and check in with Search and Rescue volunteers at staffed checkpoints using a bib number and password. The 100 Mile is two laps of the same Deep Creek start/finish, each lap a different route; the 100K, added in 2014, is the first lap only.
Founded in 1997 by Tom Ripley and Christina Ralph of the Cascade Running Club (which also directed the Ron Herzog 50K, White River 50 Miler and Bridle Trails Twilight 8 Hour) as Washington's first 100-mile trail race, three weeks apart from Cascade Crest 100 the same year. Six runners started the first race; a snowstorm above 6,500 feet ended it early with no finishers. The first finishers were Tim Stroh and Randy Gerke in 1998; Liz McGroff became the first woman finisher in 2002. The original start/finish was Thousand Trails Lodge; in 2011 it moved to Deep Creek, with an added out-and-back spur to Thousand Trails to keep the distance the same, and the race course has not changed since. A 100K (the first loop only) was added in 2014. Wildfires cancelled the race in 2003 and 2015; in 2014 a wildfire forced a course modification that dropped the Tommy and Tyee checkpoints and added a foot-access-only Whistling Pig Meadow checkpoint; 2020 was cancelled for COVID-19; 2018, 2022 and 2026 were cancelled for wildfire. Tom Ripley and Christina Ralph retired as race directors in 2015, handing the race to long-time participant and SAR Support Team Commander Tim Stroh together with Tim Dehnhoff.
| Mile | Station | Cutoff | Crew | Bag | Pacer | Med | To next |
|---|---|---|---|---|---|---|---|
| 0.00 | Deep Creek | ? | ● | ● | · | ? | ? |
| ? | Maverick Saddle | ? | · | · | · | ? | ? |
| ? | North Tommy | 2:30pm | · | · | · | ? | ? |
| ? | Lake Creek | ? | · | · | · | ? | ? |
| ? | Tyee | 10:00pm | · | · | · | ? | ? |
| ? | Maverick Saddle | ? | · | · | · | ? | ? |
| ? | Deep Creek | 3:00am | ● | ● | · | ? | ? |
| ? | Chikamin Tie | 9:00am | · | · | · | ? | ? |
| ? | Alder Ridge | 5:00pm | · | · | · | ? | ? |
| ? | Deep Creek | 5:00pm | ● | ● | · | ? | ? |
From Lake Wenatchee Rec Club (race headquarters): turn left on Chiwawa Loop Rd, at 4 miles turn left onto Lower Chiwawa Loop Rd (FS 6100), at 9.6 miles turn right at the 'T' intersection, arrive at Deep Creek after 100 feet on the right side of the road. About 15 minutes travel time from LWRC. Only park on one side of the road to leave room for other vehicles.
Parking. Limited parking along the road; park on one side only. Sleeping in vehicles and motor homes are both allowed. Stay off the adjacent airfield.
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