This is a great workout for both outdoors and the gym. No equipment is required for the strength-training circuits, so you can stop at given points in an outdoor running route to complete them in t...

This is a great workout for both outdoors and the gym. No equipment is required for the strength-training circuits, so you can stop at given points in an outdoor running route to complete them in t...

Original article and pictures take https://pumpsandiron.com site