This is why Marine boot camp, without a doubt, is the most rigorous and challenging, both physically and mentally, than basic training programs of all the other military branches. New recruits are also required to study and memorize an extreme amount of information, including: 1  Basic drill and ceremony.  USMC Rank.
There are basically 2 ways to increase your stride length: 1  Run upwards on some type of an inclined surface, or. 2  Run with some type of resistance behind you. (i.e., parachutes, flexbands, sleds, etc.)
Once you start running high mileage (for you; it will be relative), then be more conservative with adding miles to your weekly plan. A great strategy I frequently use is to only add mileage every 2nd week, allowing 2 weeks for my body to adapt to a certain training volume before an increase.