Done 4 IMs. After year of focus for each one, I crossed finish line disappointed and feeling terrible about myself after slogging through 2nd half of marathon. During each one I had to throw up during the run, which is just a terrible feeling. Trying to figure out what went wrong and the training is fun. Following what the pros do at Kona is fun. But they can train full time and are elite athletes. I'm not. 1/2 IMs are kind of hit or miss. Fun to train for. Nice big races in nice locations so that is cool. Takes a lot of training though - really same training as IM if you want to do well. This amount of training affects work life and social life, so also really just not worth it.
Olympic distance is the sweet spot I have found after 20-years of tri. Regardless of what my fitness level was at time, I was able to push myself for whole race. Accordingly, felt good about my effort after the race, unlike IM. Just when you get sick of each sport during the race, you find yourself in transition about to switch to another race. Perfect distance. Always fun. Can train a lot still or not so much if work or other obligations get in way and you are still fine.
Sprints and unusual distance races (Laguna Phuket and Alcatraz) are also super fun.
Olympic distance is the sweet spot I have found after 20-years of tri. Regardless of what my fitness level was at time, I was able to push myself for whole race. Accordingly, felt good about my effort after the race, unlike IM. Just when you get sick of each sport during the race, you find yourself in transition about to switch to another race. Perfect distance. Always fun. Can train a lot still or not so much if work or other obligations get in way and you are still fine.
Sprints and unusual distance races (Laguna Phuket and Alcatraz) are also super fun.