I did my first timed run today and it was abysmal.
I was doing well until last week and suddenly it's all fallen apart. I've got three weeks to get my times down, I'm aiming for two miles in ten minutes. I'm already training with the Army every Tuesday until then, doing a run to, from and in the park nearby (about 4-5 miles). Anyone have any tips?
Be patient. 5 minute miles are pretty fast, especially when you're trying to do two in a row. I don't know where you're at right now, or what you've done, but my initial reaction without knowing anything is that I don't think you would be able to get that fast in 2 weeks. For suggestions, do speed-work once or twice a weeks. If there is a track somewhere in your town, do some sort of intervals... sprint x-meters, rest a short period of time, wash, rinse, and repeat.