At 1.7 miles, the trail passes the end of Sea Cloud Park, a 6-acre city park with baseball diamonds and playing fields. The Foster City Little League plays here. At 1.9 miles, the trail makes a wide turn to the north, along the outer bank of a long, shallow, rectangular lagoon that runs along the edge of Sea Cloud Park. This lagoon may be dry in the summer. Belmont Slough begins to widen up considerably here.
Small islands appear in the middle of the slough.
The marshes get wider, cut by small channels and sloughs. On the opposite bank of Belmont Slough is the unpaved Bay Trail along Redwood Shores. At 2.2 miles, the trail passes the end of the long lagoon. A short connector path leads inland to the bank of the Foster City Lagoon at Sea Cloud Park. Houses line the lagoon to the right.