With the reduced training time, one obvious solution is to just focus on running. I have been asked about this a couple of times recently. It makes sense. Get in about 6-8 hours of running each week and I should be able to get out some fast times up to half marathon distance. It is an appealing option in some ways. I wasn't too far away from this approach when I ran my marathon PR last year. There are a few reasons why I haven't chosen this option. The longer term goal is a major influence. I am still planning on going fast over the half ironman distance in 2010/11. I believe this goal will be better served by having a more balanced approach to fitness. Enhancing a mix of fitness elements including: strength, flexibilty, power, speed, stability across different modes will hopefully build a strong base fitness that will not only reduce injury risk, but hopefully add to general health. Having young kids and working as a paramedic can place some less than ideal manual handling/lif...