[1] When this route was checked the exit was on the opposite side of the station. You should turn away from the centre of town, get down to the road and follow it to the left so that you reach the other side of the station and then you can find the river and the wooden footbridge.
On the bridge over the river you will find signs for the Darent Valley Walk which lead you straight ahead through a car park and then left on a road that passes under the railway. At the end of this road turn right across a busy road and then left almost immediately, down a road through an industrial estate.
Take the first ungated turning on the left. This looks a bit like an entrance to an industrial unit, but if you continue you emerge again on the banks of the Darent. Turn right immediately before crossing the river. You have re-joined the Darent Valley Walk, which you will follow to the Thames. Up to the A206 your route is right beside the river.
[2] When you reach the A206 the legal right of way goes across the road, but unless the river is very high it is better to follow the river under the bridge. From now to the Thames the route runs on top of the flood defences, so twists and turns, but the way is clear and waymarked. This area is called Dartford Marshes.
When this route was being checked there were cattle being grazed along the marshes and a bull in the field. There was also some shooting near the right of way.
[3] On reaching the Thames you are forced to turn right. A splendid vista opens up. On your left is the awesome Thames and ahead of you the Queen Elizabeth Bridge, a mighty piece of architecture. If you have had enough a track just after point 3 leads back to point 1 (Further up it can be heavily used by lorries) But if you want to continue, walk along the top of the flood defences. The right of way runs on the nearest one to the river, but you may get better views from the more southerly defence, which is a little higher.
A narrow path leads between the Thames and the semi derilect Littlebrook Power Station. Notice the injunctions to potential demonstrators on the wall. These are the result of protests at a nearby power station against continued use of coal for power. Littlebrook was never threatened. Across the river you may see ships manoeuvring at the container dock to the west of the bridge.
Go under the bridge and continue along the river until your way is blocked by industry.
[4] Follow the path to the right. This brings you out to the road. Turn left and walk for about 20 metres. Do not attempt to cross the forecourt of the Asda petrol station, but instead turn left, down a sunken path which runs alongside the petrol station and then behind Asda. Emerge into a new housing estate and keep straight ahead. You arrive at a square. Turn right here. You can see the pedestrian entrance to the Asda café and supermarket here.
Leave the square by the exit road and turn right at the junction with the main road (The pubs of Greenhithe are off to the left). Walk ahead to the large roundabout and then left up a hill to Greenhithe station.