Veloviewer Tile Bagging?

NCN 13 goes through Tilbury and follows the North side of the river for a bit.

But I guess lots of it (especially the Southern side of the Estuary) is walking/running along footpaths.

I've got a few tiles by cycling somewhere and then going for a run where it's just not accessible by bike.

There's a huge number of tiles to get along the banks of the Estuary before you start getting tiles which are 100% water (just south of Canvey Island). Not sure about the Coryton ones though.

You can always check via: https://rideeverytile.com/tiles/heatmap

Some of them have only 2 or 3 visitors, which generally means they've blagged a way in as a pedestrian or they may have taken to the water in a kayak. You can click on the individual activity links to make a guess at how they did it.