Well, having lost a lot of weight since last summer I feel its feasible that I could have a go at a triathlon this year. I'm thinking of doing a sprint distance one to start, there is one coming up in Wilmslow in mid May - so that would give me 8 weeks to train.
I currently commute about 8.5 miles per day, 5 days a week and do this in around 40 mins (with panniers, hub dynamo and traffic lights to contend with...)
I was a reasonably strong swimmer in my youth and swam 2k on a number of occasions, I haven't however swum other than recreational messing about in a pool for a fair while.
Running is where I'm really a bit concerned, running has always been something I've been poor at; fundamentally I seem not to be able to do it very well - I was never great at school sports, but felt I could keep 'in touch' in most disciplines unless they involved running, particularly short distances. Once the distances hit a mile or so then I was at the back end of average... I tried running again a couple of years ago (before losing the weight) and had incredibly bad shin splints within a half mile (something I also suffer from when walking very quickly).
I suspect I need gait analysis and the right shoes plus a very careful build up. And the careful build up is what I'm really unsure about; I've found very gentle introductory training programs for running alone and I've found 8-week training programs for triathlon, but they don't take into account doing 40 mins on the bike 5 days a week. I'm sure I could do some of the programs along side the commute, but it seems pointless to do a 'program' when I'd be essentially ignoring the cycling component...
So I'm thinking I have a few options:
1) Bodge a plan together myself for 8 weeks - run 3 times per week building up the distance by a few hundred meters each week until I hit 6k, cycle 26k once a fortnight as part of a 'brick' just to keep on top of the distance and get used to doing different disciplines in one seesion, swim once a week.
2) Forget about the Wilmslow triathlon and find a very gentle running program to get me on top of running first, then continue the search for a training program that would work well alongside the commuting (or revert to 1).
3) Find a coach and get some proper advice. (I have discounted a club on the grounds that I'm quite restricted as to when I could train - it would likely be before/part of my morning commute; most clubs train in the evenings).