Your adventure will begin and end at the Gateway Arch and will cover 13 trail miles and 10 river miles. You’ll begin your day with a 13 mile bike ride along the STL Riverfront Trail and crossing the old Chain of Rocks Bridge to the Illinois side of the river. After stopping for a break at Chouteau Island, you’ll then begin the paddle back to the Arch. This trip will feature a route with both paved and gravel portions.