Explore some of London’s hidden gems on this tour of the ‘gateway to London’ along the Thames’ eastern stretch. Head out from the grand Woolwich Barracks on marathon, half marathon and 10k routes. Expect sites like Greenwich Riverside, the Thames Barrier, and Tower Bridge on the full marathon route. There are regular rest stops packed with food and drink, a lively warm-up and event atmosphere, and capped with a BBQ, bar and music at the finish.

https://ultrachallenge.com/london-summer-walk/listed-charity