The coast path is now open
Natural England lists the Mersea Island section of the King Charles III England Coast Path as open to the public since January 2026. That confirms the status of the established coastal route, not that every beach, marsh track or older GPX trace is safe at every tide.
Distance and time
Published island circuits are commonly described as approximately 13 miles (21 km), with five to six hours of walking before stops. The exact distance depends on the route and any diversions. Choose footwear for shingle, uneven tracks, mud and road connections rather than expecting continuous paving.
How the landscapes change
From the working harbour and Strood Channel side, the northern coast looks over creeks and marshes towards the Pyefleet. The eastern end reaches Mersea Stone and Cudmore Grove; the return across the south coast passes more open beaches and the West Mersea seafront.
Check the route, not just the distance
Use the Essex rights of way map and current signs, including coast-path waymarks and closure notices. Coastal erosion can change a practical line; marsh and foreshore are not shortcuts. Carry an up-to-date map rather than following a straight line between digital waypoints.
Tides, weather and return plans
Tide matters on foreshore sections and for driving away via the Strood. Strong winds make long exposed stretches tiring. If a full circuit is too much, Cudmore Grove and West Mersea waterfront provide shorter options.