Quote (brownside @ Jul 17 2014 08:41pm)
I am doing the walk in 40 min but i also want to prepare for the academy in general it's heavily enduranced based
If you are already capable of doing the walk in the time allocated, that's good news.
In order to improve your overall endurance, you will need to recreate the particular exercises you will be doing. Example, if the particular fire academy training you are going through will result in a lot of stair climbing with heavy loads, walking long distances with bunker gear, or even dragging heavy dummies over long distances, you will have to have a makeshift circuit.
Example:
Day 1 - 3 mile "walk" with 45 lb plate + 25 lb plate (extra weight will greatly improve your 45 lb plate time), Take a long rest period, and conduct your usual workout routine later, except with an endurance set/rep scheme (higher reps, lower weight, lots of forced reps, breakdowns, and supersets) (2 muscle groups)
Day 2 - 10 sets of 100 yard dummy drags w/ a 100 lb dummy (if no dummy is available, satchel with 100 lbs of weights, or equivalent), follow up with rest and the same workout routine above (2 muscle groups)
Day 3 - 2 miles of stair climbing with a backpack containing 70 lbs on your back, follow up with rest and the same workout routine above (remaining 2 muscle groups).
This is just an example on how to construct a plan that will enable you to greatly excel at the physical portion of the fire academy.
If you would like a real customized plan, provide me with a list of the physical curriculum and I will accommodate you.