My scores were worse than that when I started out except for the mile but that because I have been running long distance since the sixth grade. After about a month, I was able to do 57 push-ups, 59 sit-ups, and a 5:3- miles. The only thing you can do to get faster at running is run. Since it is only a mile, I would do 2 long distance day (5-6 miles at about 70%), 3 sprint type day (either 8-10 400 or 4-6 800m attempting to hit a specific time), and an easy day (3 easy miles). For push-ups again you have to do them. I did 5 set of as many as I could do a night as breaks from my homework. I also made it harder by doing them from an elevated position. For sit up I would do as many as you could in 2-3 minutes, and do 6 inches, crushes, planks, etc. Hopefully, this helps!