This trail enters the Mark O. Hatfield Wilderness and the usual federal wilderness area regulations and restrictions apply here; practice Leave No Trace (LNT) backcountry skills and ethics, camp 100 feet from fragile areas, bury human waste at least 200 feet from water, trails, and campsites. This trail is usually closed by snow between November and May. This trail can be used in winter but both snow travel and navigation skills are essential for safety.
This trail starts at its junction with the Starvation Ridge Trail #414
and ends at its junction with the Mount Defiance Trail #413
, passing Warren Lake and the Warren Lake Trail #417A
enroute. This trail is well-traveled since it forms part of the demanding, but still popular, run to the summit of Mount Defiance
From its junction with the #414, the #417 climbs easily for 0.9 mile to a junction with Warren Lake Trail #417A
, coming in from the service road going to the summit. Continue on the #417 as it heads slightly downhill for 0.3 mile to charming little Warren Lake, nestled in a bowl on the side of Mount Defiance
. There are several established campsites at the lake.
Past Warren Lake, the #417 climbs some more, and after 0.7 miles, ends at its the junction with Mount Defiance Trail #413
Note that some maps show the #417 starting at a road east of its junction with the #414. This short piece of trail is on private land, has been subjected to logging, and is apparently no longer a viable part of the #417.