Is CIM the Vaporfly 4% of Marathons?

  • thexx
  • net change ain't everything
  • vivalarepublica
  • CIM is not that fast
  • Using actual data
  • George 2:41
    registered
  • reed
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  • YMMV
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  • Snowflake Elite
  • Crumpet
  • CaptainTuttle262
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  • Evan Jogger