A man ran 415 circles around a roundabout, a 36-mile ultramarathon
NPR's Mary Louise Kelly talks with Tate Dobson, who ran a 36-mile ultramarathon by running 415 circles around a roundabout.

NPR's Mary Louise Kelly talks with Tate Dobson, who ran a 36-mile ultramarathon by running 415 circles around a roundabout.