| Since you ran track in High School and it's your 1st Tri, I don't think you will have much building the stamina to finish the 5K. There's lots of information out there about running a 5K -- conditioning, periodization, intervals, etc.
I think the hardest part of a 1st Tri might be the transition from bike to run. After a hard bike leg -- hey it's a sprint after all -- your quads are tight and burning, the legs don't bend, and the stride is short and choppy. This is partly conditioning but just as much getting your body used to making the transition. To work around this, practice bricks -- bike a while, then run, then bike, then run, etc. Depending on intensity, bricks can be as short as a 5 minute ride and 2 minute run or as long as you want to make it.
Another thing is find a way to relax (a little) before the run. You'll definitely want to practice before a race to find what works best for you. In the last mile or 2 of the bike, shift into a higher gear, slow your cadence (and try to lower your heart rate). This shifts the load into big muscles and can help you relax before the run. Or alternatively, try going into a lower gear and spin into the bike-run transition. This puts load on your cardiovascular system and may give your leg muscles a break.
Good luck! |