Is Vaporfly 4% worth 10 secs per mile of a boost in a full marathon?

  • it's simple
  • JimbobJ
  • Subway Surfers
    registered
  • runnER/DR
    registered
  • it's simple
  • George213
  • moist
    registered
  • dpaull414
    registered
  • Bob Schul Country
  • Hourunner
    registered
  • Bob Schul Country
  • justanopinion
  • MONTANA.S
  • fhsosssoshoeees
  • Bob Schul Country
  • Bob Schul Country
  • Runningart2004
    registered
  • UA Runner
    registered
  • UA Runner
    registered
  • Close