44. Dr Ian Walker. Ultra-distance running, cycling and research on road safety

We cover a lot of ground with Dr Ian Walker, which seems rather fitting. He ignored sport until the age of 40 then threw himself into ultra-running before abruptly switching to ultra-distance cycling and setting the trans-Europe world record. He's also a psychologist researching drivers' behavior towards cyclists and has some fascinating insights about helmets and staying safe on two wheels.Ian's book Endless Perfect Circles Twitter Instagram...