If you think training for a 50K (or any ultra, for that matter) means stacking endless junk miles, running six days a week, and sacrificing your strength training, you’ve already lost. If your foundational programming principle is lower running volume, higher strength volume, you can build durable, powerful, injury-resistant runners who can take a beating and keep moving for the long haul. 

So you signed up for your first 50K.  Maybe it’s been on your bucket list. Maybe it’s a dare. Or maybe you just wanted something hard to...