John Ryan Roberson

Fredricksburg, VA, USA
  • Total Results 16
  • Total Events 6
Personal Records
  • 55m (in) - 6.90
  • 300m (in) - 36.35
  • 400m (in) - 54.59
  • 400m - 54.71
  • 500m (in) - 1:09.36
  • 800m (in) - 2:18.03

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Performance Graph for Outdoor 400 Meter Dash