The Bristol Half-Marathon will take place on Sunday 15th September 2019 and it will again involve road closures close to Merchants Landing. Full details are available from this leaflet (PDF).
The organizers have assured us that:
… there will be an escape lane from Challoner Court along Wapping Rd. up to the roundabout with Cumberland Road. Residents won’t need a pass, they will be allowed to exit all day.
Obviously there will only be a left-turn at the Louisiana roundabout, at least until 13:30 when Cumberland Road is re-opened.
And residents will be able to return to the estate during the event – stewards at the Louisiana end of Wapping Road will allow residents through.