Dathan Ritzenhein taregets personal best at World Half Marathon
Dathan Ritzenhein looks to continue breaking barriers and personal bests Sunday in the World Half Marathon Championships in Birmingham, England. After personal bests in the 5,000 meters and 10,000 on the track this summer, the indications are he could run another personal best at 13.1 miles (1:01:25) or even become the second American to break…