American pro marathoner blasts to new 50-mile world record

Boulder’s Charlie Lawrence ran a remarkable 4:48:21 at the Tunnel Hill 50-miler, averaging a 3:35 min/km pace

Weekend recap: CCAA Cross-Country Championships and Tunnel Hill 100

Many of the big names in ultrarunning showed up at the Tunnel Hill 100 miler

Aleksandr Sorokin of Lithuania runs 309 kilometres in 24 hours to break world record

Sorokin averaged 4:39 per km over seven consecutive marathons