Thorney Island from Prinsted

Starting from Prinsted (just off the A259) this West Sussex walk explores the shoreline of Thorney Island which lies within the boundaries of the Chichester Harbour AONB. The route follows the Sussex Border Path for most of the way.

Technical sheet
No. 293053
A Southbourne walk posted on 04/07/16 by Walking Britain. Update : 20/09/16
Calculated time Calculated time: 3h25[?]
Distance Distance : 7.44mi
Vertical gain Vertical gain : 13ft
Vertical drop Vertical drop : 13ft
Highest point Highest point : 16ft
Lowest point Lowest point : -3ft
Easy Difficulty : Easy
Back to starting point Back to starting point : Yes
Walking Walking
Location Location : Southbourne
Starting point Starting point : N 50.83994° / W 0.91385°
Download : -


(D)From the car park in Prinsted follow the track west. Take the footpath on your right passing Thornham Farm on your left with the path soon becoming a track again. You are now on the Sussex Border Path and will follow it for most of the route. Reaching a road, cross straight over and continue on the path ahead. Reaching a T-junction with a track, turn right (grid ref. SU755501). The walk briefly heads north. Take the path on your left at grid ref. SU755052) to pass the southern end of a marina. You soon reach the shoreline.

(1)Turn left along the shore and follow it back to the start! Initially you have views across the Emsworth Channel to Hayling Island. You pass Wickor and Marker Points before the path turns towards the southeast with views now to Chichester Harbour.

(2)Reaching Longmere Point (the most southerly point on the island) you will see Pilsey Island just offshore with West Wittering on the shore at the far side the water.

(3)Turning north you have Thorney Channel on your right. Passing the Church and War Cemetery you continue north to Stanbury Point and back to the start.(A)

Waypoints :
D/A : mi 0 - alt. 3ft - Prinsted car park
1 : mi 0.89 - alt. 0ft - Marina
2 : mi 3.04 - alt. 0ft - Marker Point
3 : mi 4.71 - alt. 7ft - Longmere Point
D/A : mi 7.44 - alt. 3ft - Prinsted car park

Useful Information

This route follows the shoreline of Chichester Harbour around Thorney Island. There are good views across the harbour. The start is the small free car park at Prinsted just off the A259 (grid ref. SU765050). It is important that you consult tide times as the route may be flooded in one or two places at very high spring tides.

Parts of Thorney Island is Ministry of Defence land so short cuts across Thorney Island are not permitted. In the past access to this area has been strictly controlled with guards at the entry and exit points to MOD property. Access to the Church and adjacent cemetery has also be restricted. However this situation has recently changed so the advice is to read and obey any signs detailing access to the site.

Visorando and this author cannot be held responsible in the case of accidents or problems occuring on this walk.

Opinions and comments


Global average : 4.67/5
Number of opinions : 2
Description quality : 4.5/5
Routemap quality : 5/5
Walk interest : 4.5/5

on Mon 28 Jun 2021 09:25:53 CEST

Global average : 4.33 / 5

Date of walk : 23/06/21
Description quality : Good
Routemap quality : Very good
Walk interest : Good

Enjoyable walk - we measured the distance as 8 miles. Path was a bit overgrown in places - watch out for the tall nettles! Be sure to bring water with you. Getting in to the military area was not a problem. St Nicholas church was very interesting ans a poignant reminder of the Battle of Britain.

on Fri 17 Apr 2020 10:33:30 CEST

Global average : 5 / 5

Date of walk : 17/04/20
Description quality : Very good
Routemap quality : Very good
Walk interest : Very good

This is a great walk. Very suitable for dogs. The gates in to the military area are controlled, You will need to press the buzzer. Lean on the gate as they sometimes only buzz the opening lock for a few seconds. Wave a thank you because you are on camera. There is no shelter on this walk. The Island is very flat and can be windy. No shade either so it is hot when sunny.
You can get a cup of tea or coffee at the Scout Hut in Prinstead on a Saturday or Sunday or Bank Holiday between April and October. They will appreciate your business. Otherwise no refreshments near this route. Go to Emsworth for pubs and cafes.

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