Originally Posted by 135ivert
I'm doing my first tri in September (sprint: 525m/20km/5k), . For the last year I've been doing light weights & cycling. I added swimming about a month ago. You have to practice everything, but right now the running is what's worrying me.
What's your running pace? There are good programs on the web to improve it in a couple of months. I don't do triathlons (yet) I am a Marathons runner.