Katie Spotz sets Guinness World Record for most ultramarathons in a row

The American runner completed 11 50K ultramarathons in 11 days

Ultrarunner Katie Spotz prepares for 11 straight 50Ks in world record attempt

Spotz is looking to break the record for most ultramarathons in a row as she runs across the state of Ohio

Ultrarunner becomes first person to run across the state of Maine

Katie Spotz completed her 220K challenge in 33 hours and raised $17,000 for Lifewater International in the process