Jun 9 2013: Nathan Brown places 68th at the Men Cat1/2 Race at the Tulsa Tough - River Parks Riverview Criterium in a group sprint

Jun 8 2013: Nathan Brown places 92nd at the Men Cat1/2 Race at the Tulsa Tough - George Kaiser Family Foundation Brady Village Criterium in a group sprint

Jun 7 2013: Nathan Brown places 18th at the Men Cat1/2 Race at the Tulsa Tough - McNellie's Group Blue Dome Criterium in a group sprint