I simply ran my _ss off like 5 days a week when I was preparing for OCS.
If you are in B/CS, I know there's not a lot of hills to run up and down on, but I turned to the treadmill for that. But, MCB Quantico, especially at OCS, is full of hills, some really steep ones too on the OCS running trails.
Obviously, you want to be careful and stretch a lot so you don't get IT band syndrome or any other kind of muscle/ligament/tendon inflammations.
I wouldn't do anything crazy like...run some crazy distances with a pack on your back or anything like that. You can end up getting hair-line fractures or just simply wear out your knees.
Yes, you will do that at OCS in boots and utes with a pack and a weapon, and other deuce gear on you that is extremely annoying. Everyone's body is different, but I wouldn't risk it by running with a pack or weight on your back before OCS.
Now back to the treadmill. I think what helped me the most was, simply plain and put, running a lot. At least 3 miles a day and usually closer to 4 or 5 during my usual routines.
But on the treadmill, in tennis shoes of course, I would start a brisk walk at like....3.0,..... just to get warmed up. Every two minutes that went by, I increased it a whole point. No breaks in between in intervals. I would keep increasing the level every two minutes to where I couldn't keep up, and then walked it back down, a whole level every two minutes until I got back down to 3.0 and then cooled off, and did lots of stretching afterwards.
Every day that went by, I increased the starting level by .1. Yes. .1
So, the very next day, I started out at 3.1, two minutes went by, I bumped up to 4.1, two minutes went by, 5.1 and so on and so forth.
I think in the first couple of months, I was peaking out at around 9.0, or 9.1, respectively, for two straight minutes before I walked it back down every two minutes.
But eventually, I got in good enough shape to where I could peak out at 12.0 for two solid minutes and walked it back down one whole point, every two minutes. I always started out with a 3.0 two minute walk though. Then, if my new day was supposed to start out at 5.6, I just moved up to that level and continued from there.
So, when I took my pre-ship PFT wit the OSO there in College Station (we did it out at research park back then), I ran an 18:13 3-mile time. That was after a whole year of running my _ass off at the age of 26, 5'9", 165 lbs. My total PFT was 298.
I will tell you at OCS, I checked in and was one of the faster guys there, probably top 5%. We did have one guy that ran in like....16:35 or something crazy. He was a slalom skier at some small school in Colorado, probably weighed 145 lbs and was just a gazelle. Plain and simple.
We also had another guy do 75 straight pull-ups without stopping. Insane! Some freaks like that just exist out there.
None of that stuff mattered. Because after a week or two of high stress and absolute sleep deprivation, it all becomes mental. So of course, you want to be in the best possible shape you can. And don't go trying to sleep deprive yourself in preparation. But, you might try to adjust your lifestyle to only 6 hours of sleep. See how you feel after two weeks or so. Not that we ever got 6 solid hours of sleep when I was at OCS. Especially since my rack was right next to the drill instructors' duty hut/office.
And if you go to OCS in the winter time (which I did: Jan - March time frame of that year), the cold and snow will beat you down and again, it's all mental toughness. Especially when you have to low crawl through the quigley completely engulfed in water in 15 degree weather with a howling wind about.
That's probably more pointers than you were asking for, but good luck to you.
Semper Fidelis,
Capt B., USMCR
[This message has been edited by SemperFiAg (edited 6/23/2011 7:27p).]