[Josh Gray]

Max, a good cheap option for hill sprints is using an old car tire. You can almost always grab one for free stacked behind car dealerships (they just trash them) drill a hole and put an eye bolt through it and attach a rope. On flats to 10% grade you’ll need to add weight inside it to get the right resistance if you’re just using one tire. I use it on a 10% dirt road near my house and it’s perfect with a 25-30 pound sandbag inside the tire.

I know you asked Scott to clarify on the zone 3, but I believe the goal of swapping out the ME for Z3 is because the Z3 is much more sport specific and allows you to take the gains that you’ve made from the gym ME converted them into real uphill running performance.