MAYFLY PRO TRACK Workout

For distance:
Weight Vest Run, 9/6kg : 1x 20 mins
-- then --
Run

Run 10 mins out and back with a weight vest. Ditch the vest back at your starting point and run out to your turnaround point and back without the vest. Find a trail if possible!

Bodyweight Version:
If the weight vest is not possible, run out and back twice trying to match what you did the first time. Find a trail if possible!