Spring Creek Park Trailhead Trail is a lightly trafficked trail located near Pinedale, WY. The trail is primarily used for hiking and is accessible from June until October.
Directions from Pinedale: Follow Pine Street west to Willow Lake Road. Follow Willow Lake Road north to the trailhead, located to the southeast of Willow Lake. The trailhead is a total of 15 miles from Pinedale.
First, I'm a little concerned that the map associated here is showing the trailhead on the wrong side of Fremont Lake. The trailhead has a nice grass parking lot, great for camping when arriving at midnight as we did. We camped there the first night in because of the hour. Mid-September temps at the time were very cold meaning we were very happy with our winter bags. The trail we would follow took us to Glimpse Lake with relative ease. It's a gentle grade that sees a lot of equestrian use. The road into the parking is for sure a high clearange vehicle road. Something more than a Honda Element (what we had) or a Toyota Rav4.
When leaving Glimpse Lake and heading toward Upper Trapper Lake the trail takes on some steeper grades. Easy to manage and still allows for making quick time. There is water literally everywhere. Camping at Upper Trapper offers few good spots outside of the eastern trees. A particularly good place to camp is on the corner of the forest against a steep slope of pines. There are logs for benches and a stones throw away are a few long logs for building a food storage trestle.
Camping beyond that (uphill) would be pleasant in the morning but higher up the wind carries on all day and night. Doesn't make for the best sleeping. So if you're looking to camp at Summit Lake, you're exposed to all the wind of Wyoming with little shelter.
The Wind Rivers are gorgeous and it was a splendid first trip up there. I plan to return on the northern side for some adventures in the high country there.