At 2.4 miles is a sign at the edge of the marsh identifying it as the Belmont Slough Wildlife Refuge. A narrow dirt footpath leads into the marsh and across a wooden plank bridge. At 2.5 miles, Beach Park Blvd, a 4-lane divided road, approaches the trail and parallels it. It accompanies the trail from here to the San Mateo Bridge. At 2.6 miles, the trail passes under the towering powerlines that follow along the bayshore.
Catwalks lead out over the marsh to the power towers.
Ducks may use these to rest on. Just beyond the power lines, is the intersection with Foster City Blvd., which is a 4-lane divided road. Foster City Blvd. This can be used as a shortcut or loopback route. The trail becomes more open through here, with wide grassy fields on both sides.