Yeah I was doing a challenge of walking entirely across the city, from Woolwich to Heathrow. I think I made it to about Chiswick before my phone died and it was too dark to keep recording on my GoPro. So maybe 30-35k or so that day, and another 20k or so the day before and after just exploring the city more informally.

Agreed that walking is the best way to see a city, for sure. I have done similar one day walks across Brooklyn, Manhattan, etc. and always really enjoy the experience. Usually I have a kind of set goal, like “walk entirely across X place.” I think in Istanbul though I mostly just wandered for 100km (over the course of a week.)

This past summer I walked about 124km around Paris over 5-6 days, going in a spiral through all the arrondissements. That was a great way to discover some new neighborhoods.