This refers to routes around Stratford and the Queen Elizabeth Olympic Park in London.

The query "walk e20" could refer to a few different things, and I want to make sure I give you the right information. Did you mean:

This is a beginner-friendly personal mobility device often discussed in terms of its portability and "trolley" walking mode.

This is a specific mode on bikes like the Estarli E20 that helps you push the bike while walking.