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.)
Continue adding 10 percent to your run to increase your stamina. But make sure to alternate your training. For example, if you run 20 miles (32 km) a week, you will increase it to 22 miles (35 km) the next week.