This challenge is set along the Thames Path. The full route begins at Bishop's Park, and on through leafy Kew and Richmond past the last non-tidal lock at Teddington. It passes the Royal palace of Hampton Court, beneath Windsor Castle and on through beautiful countryside to Henley. The full 100km heads along the Thames from Putney to Runnymede where the Magna Carta was first authorised in 1215. Or choose from the 50km or 25km route. You'll be fully supported on the day, with excellent food and rest stops during your trek.