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John Stamstad at the start of the John Muir Trail, Whitney Portal, California. John attempted the speed record in 2005
John Stamstad at the start of the John Muir Trail, Whitney Portal, California. John attempted the speed record in 2005
  • America
  • California
  • John Muir Trail
  • Kings Canyon National Park
  • North America
  • Sierra Nevada
  • Summer
  • USA
  • United States
  • alone
  • elevation
  • fitness
  • one man
  • one person
  • record attempt
  • running
  • technology
  • vertical
  • watch