Park for the south end of Bonneville Shoreline (BST) in Kaysville. Enter by the wilderness park sign on the singletrack trail, not the road. As you go there are markers pointing which way to turn. Follow the arrows and you can't go wrong.
Most of this trail is intermediate difficulty. Keep in mind that there is a section just after crossing the service road (and riding along with it for a moment) for the last time that is more of a black diamond technical section. This section can be skipped by staying on the service road until the trail, going south, crosses the road again.
As you approach this section above don't turn up onto the BST - wait for the brown post with the arrow telling you to turn.