Gloucester 10k is back for 2021 – in a new hybrid format for all runners It’s back – the Gloucester 10k run, taking in many of the city’s finer points on a route through the Docks, Quays, canal path and past the Cathedral, is all systems go. It’s back – the Gloucester 10k run, taking in many of the city’s finer points on a route through the Docks, Quays, canal path and past the Cathedral, is all systems go. Cancelled last year, like so many other gatherings, the chance to make its comeback has got the organisers excited and the website is open for entries.