The All-American is a super fun intro to Slaughter Pen trails. It's starts just below the Crystal Bridges Museum on the paved trail, just past the bridge.
The trail is very flowy and progressive, feature everything found on the trails throughout the system. The main trail is easy going with a series of optional lines ranging from ladder bridges and boulder to small rollers and berms.
The first part of the trail is a gentle descent while the second half gains some speed before intersecting with the paved trail again.
You can session this trail or continue onto The Urban Trail
which connects Slaughter Pen Phases I, II and III.