So.... years (and I mean years) ago I used to do mini triathlons (3 min swim, 1mile run). A friend has entered a triathlon in May and has invited me to train/compete. But it sounds like awfuly long distances. I haven't swum in years, I cycle to work (3 days a week-hardly break out a sweat) and walk lots (with pushchair up hills). People think I'm fit because I am slim, but it strikes me that this would require a totally different level of fitness.
Do I have enough time to get fit enough and how often in the week would i have to swim/run do you think?