The ASICS London 10K will cause some changes to traffic routes for a limited period on Sunday 21 July. Piccadilly will be closed at 05:30, Whitehall and Horse Guards Avenue close at 06:00 and all other roads will close at 07:00, ahead of the 09:30 race start. Roads will begin to re-open once runners have passed by and when it is safe to do so, with all roads fully re-opened by 14:30. Parking suspensions will be in place too.
The full list of road closures and parking suspensions can be found in the link below.