Anyone doing the marathon, or know anyone running?
Each runner has a chip in their vest badge, which transmits their position. Adidas have done an app that can show where each runner is – just enter the runner’s number. Quite good.
Interactive map here: http://www.virginlondonmarathon.com/interactive-map/
The map is also quite good. Enter your own running time and you can see where you’ll be at different times, just so poeple can plan their own route to meet you at diff spots. My mate will see his missus 7 times on the run. Nice to see he’s got her doing the run and not himself.