Family Friendly: Easy, wide trail with nice views.
The FB Trail starts at the Ribbon Bridge on the Sacramento River Trail: Shasta Wildlife Resources to Sacramento River Trail Bridge
. When you cross Keswick Dam Rd, the trail picks up on the opposite side of the road. You can also park at the parking lot on Keswick Dam Rd and start the upper section of the trail from there.
Overall, this is a doubletrack trail that winds through the hills above the shores of Lake Keswick. There are some great views of the lake from this trail. You can link to the Upper Sac Ditch Trail
all the way to Shasta Dam.