A circular walk of 9.73 miles, a repeat of a walk previously done on 17 May 2014, with minor variations.
https://www.goc.org.uk/reports/17-may-2014-lee-valley-park-legacies-and-essex/

The route is a flagship route from east Herts, barging into Essex, taking in the aging legacies of the 2012 London Olympic Games, water meadows, open countryside, a slice of Waltham Abbey, a few coal tax posts, a nice jaunt uphill for lunch (views from SW to NW), a small lump of Epping Forest, public art, and billions of electricity pylons.  There is also a possibility to see a wide aspect of the London Basin, clear weather permitting, from Canary Wharf to the Wembley Arch, from Essex to the basin's southern ridge.

On a re-pilot of Jun2023, animals seen included: great crested grebes, mute swans, greylag geese, Canada geese, Egyptian geese, mallards, tufted ducks, pochards, red kites, moorhens, coots, black-headed gulls, wood pigeons, feral pigeons, carrion crows, blackbirds, sparrows, magpies, jackdaws, jays, cattle, deer, grey squirrels, bumble bees, solitary bees, honey bees, dragonfiles, damsel flies, demoisells, butterflies (orange tip, peacock, blue, white), hoverflies.  Also heard one cuckoo, one green woodpecker, one pheasant, one chiff-chaff.

Terrain includes pavement (mainly in Lee Valley Park and Waltham Abbey), field, track, woodland path (mainly in Essex) and on-road.  There are stiles (and equivalents) on the route.

Elevation ranges from 17 to 106m, generally flat while in the Lee Valley park, but then substantially hilly in Essex, with three major uphills. Uphill 1 is of a 53m rise over 0.5km, 2 is of a 66m rise over 1.1km (hence the lunch point), 3 is of a 34m rise over 0.6km. The downhill gradients are broadly the mirror inverse of the uphills.

Bring packed lunch, lots of water and something to sit on. Nearly all of the route is exposed to sunlight, with much of the Lee Valley being sheltered from wind.  There is limited tree cover at lunch and for a short distance thereafter.  Lunch is on the ground, at the route's highest point, facing northbound.

Toilet stops are very limited in the first and last thirds of the walk (the Lee Valley).  There are no toilets at the start point, which is an urban area.

There is an optional pub stop at the end of this walk.