This very accomplished video shows how to use the Hayling Ferry to cycle all the way around Langstone Harbour.
The illustrated route uses the new cycle path from Langstone Technology Park south along the main road. Havant plans to extend the path all the way down to the existing path to the bridge but, for the time being, it’s pavement cycling along this stretch. A quiet alternative is to cross the main road to Woodberry Avenue which becomes Southbrook Road. Turn left into the small cul de sac after Hamilton Close (also called Southbrook Road) and use the tucked-away cut-through on the right to join the Langstone section of the Billy Trail and on to rejoin the described route.