The trailheads are up Logan Canyon at Spring Hollow and Guinavah/Malibu Campgrounds. From the mouth of Logan Canyon, take 89 east about 4 miles.

Spring Hollow is on the right. Park at the trailhead parking area and follow the Spring Hollow Road uphill to reach the trail proper.

If starting at Guinavah, continue on another mile. It is also on the right, just past the Wind Caves trailhead. Once in Guinavah, follow the campground road left as it passes through part of the campground and crosses the Logan River. Right after the Logan River crossing, go right and follow the road to a signed trailhead parking area.

Crimson Trail Proper (4 miles / Though the trailhead sign says 3)
From the Guinavah trailhead, follow the signed trail. It begins climbing immediately and soon reaches the junction with the Riverside Trail. Go left here, on the Crimson Trail. The trail begins climbing in earnest with steep switchbacks climbing up the ridge. By my measure, the trail climbs about 1000 vertical feet in a little over a mile. Phew!

Once up on top of the cliff, the trail flattens out and the views open. Across the canyon, the Wind Caves is visible during much of the hike, and at about the same elevation the trail is at. Views both up and down the canyon are excellent, with the Cache Valley visible in the distance as the trail meanders further west. The limestone cliffs historic Lake Bonneville left behind make for a dramatic backdop to the canyon walls.

All too soon the trail begins its steep descent to Spring Hollow. Switchbacks lead to a wide trail and junction. Go right, down the Spring Hollow Campground. Once at the campground, either follow the main road back to the parking area and your second car.

Riverside Trail Return (1.6 miles)
If you did not spot a car, take the first major trail on the right which is the Riverside Trail. The Riverside Trail has many informational signs and it meanders along the river up to Guinavah, and is a lovely family hike on its own.