In this video, ultrarunner Magda Boulet redefines what it means to have endurance as she balances her training for long distance running events with being a mother and serving at a VP at GU Energy. That's a tall order for anyone to try to work out, but especially so when you're also looking to set a new Fastest Known Time (FKT) on the legendary Tahoe Rim Trail. This 172-mile (276 km) route is breathtakingly beautiful, but also incredibly demanding, pushing Magda to her limits.