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

American ultrarunner smashes 100-mile treadmill world record with 11:32:05 run

Taggart VanEtten shattered the previous world record by a whopping 37 minutes