Started out at 6:30am to try and get ahead of the traffic. First 8km is quite suburban with some main roads thrown in (nothing too scenic). This is also the section where there are a couple of blocked access routes, first one is Forward Drive, This was closed through the industrial estate so i detoured via Kenmore Avenue. The second is the cut through from from Carlton Ave via Strathcona Rd, this was also closed so had to detour via Preston Rd. Other than that GPX was fine and route is fast.
It gets more scenic as you approach central London and passes some great landmarks. Took photos of every station which slowed me down a bit but other than that happy with time.
Ran unsupported and had 500ml of water/hydration mix and 1 gel.