Grand Ridge
Nov 7Issaquah, WA50K, Marathon +2
Also a marathon, 24 mi from Osprey Ambler, registration open
1 aid stations are already loaded. Add cutoffs, pacing and the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my planA low-key trail race at beautiful Osprey Park in Sultan, offering 3-hour, 6-hour, and marathon options on a flat, smooth single-track loop.
Race day
Oct 17, 2026
Registration openings and major changes, like a new date or a cancellation.
| Station | Distance | Crew | Drop bags | Cutoff | Supplies |
|---|---|---|---|---|---|
Start/Finish/Aid Station Located under or in front of the large shelter by the Sultan soccer field. The restrooms will be open during the race. | 0.00 miles | -- | waterHammer electrolytesbasic energy |
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
Nov 7Issaquah, WA50K, Marathon +2
Also a marathon, 24 mi from Osprey Ambler, registration open
Oct 17Julian, CA50K, Marathon +1
Also a marathon, the same weekend as Osprey Ambler, registration open
Oct 10Denison, TX50K, Marathon +3
Also a marathon, similar trail technicality to Osprey Ambler, registration open
Oct 10Perrysville, OHMarathon, Half Marathon +1
Also a marathon, similar trail technicality to Osprey Ambler, registration open
Straight-line distance
Nov 7Issaquah, WA50K, Marathon +2
Nov 28Seattle, WA50K, Marathon +1
Dec 12Maple Valley, WA50K, Marathon +1
Jun 5, 2027Monroe, WA12 hr, 6 hr +1
Feb 20, 2027Monroe, WA50K, 20 mi +2
Oct 17Monroe, WABackyard Ultra
May 15, 2027Sammamish, WAHalf Marathon, 10K +1
May 29, 2027Seattle, WA13 hr, 7 hr
Oct 31Bellevue, WA50K, 19.5 mi +2
May 7, 2027Issaquah, WA
Mar 27, 2027Seattle, WA12 hr, 5 hr
Oct 24Seattle, WA12 hr, 6 hr
Apr 17, 2027Issaquah, WA50K, Half Marathon +1
Oct 10Seattle, WA5K
Oct 10Tacoma, WA50K, 30K +1
Oct 10Leavenworth, WA50 mi, 50K
Oct 10Cle Elum, WA6 hr
Oct 24Port Angeles, WABackyard Ultra, 24 hr +1
Oct 28Black Diamond, WA11K relay
Build your aid station plan, organize your crew, and dial in your nutrition strategy. Everything you need to finish strong.
Build my planAre you the race director for Osprey Ambler?
Claim this race to manage registration, volunteers, and race day.