Temple Lake Trail is a 18.8 mile moderately trafficked out and back trail located near Boulder, Wyoming that features a lake and is rated as difficult. The trail is primarily used for hiking, fishing, and horses and is accessible from June until October. Dogs and horses are also able to use this trail.
From Pinedale, drive south on Hwy 191. At Boulder, turn left on Hwy 353 and drive 18 miles to the end of the pavement. Shorty after the pavement ends, go straight through the junction, and drive south crossing the Big Sandy River (Buckskin Crossing). At next junction, turn left (east) and drive 7 miles. Turn left at the following jct and follow the main road to the Big Sandy Campground and trailhead. This trailhead is remote, so be sure to have a full tank of gas.
Hiked this as part of an extended trip from Big Sandy Lake and made the Temple Lake part of a loop. Between Clear Lake and Deep Lake the trail goes over granite with multiple rock cairns marking several paths but it doesn't matter because its above timberline and you just follow the stream or granite up to the lake. Coming down between Rapid Lake and Big Sandy again because of multiple trails we lost the correct trail and camp down an extremely steep trail that wasn't the correct trail so be careful picking your way. The Forest service doesn't maintain the trail from Temple-Miller-Rapid-Big Sandy lake trail. The trail does not appear on some maps but does appear on Topo Maps.