Oxford via Marlow [125km / 1,285m elevation]

Another one-way trip care of David Mason, you head out of town following the Italian Job route to Little Chalfont, then through Beaconsfield back to the River Thames at Marlow. Keep a little bit of power for climbs at 90km, before a downhill run into the centre of Oxford. Return back either by train into Paddington or the many bus services to Victoria.