J.B.
I just did the MS150 here in Massachusetts (the Cape Cod Getaway). It was a great experience, but it reinforced my suspicions that I am not an endurance athlete LOL. I actually do enjoy riding, but it's not a great form of exercise for me right now because I'm too slow (avg. 12-14 mph on the road) to really knock myself out but when I kick up the speed, I literally can't ride long enough to log the miles I needed to log for training for an event like that. I also hate hills, and hate being the slowest in a group. I find that I get a much better workout when I combine kickboxing with jogging (and I'm very, very slow at that too). The triathlon run/bike/swim training is also great.
So...I like cycling for shorter distances (12-25 miles) but after that, it's just not fun for me. What really amazed me was that there were people on the MS150 who literally hadn't trained at all, or who only trained for a few weeks, who were much faster and better than I was, and I trained for 5 months. There was a girl on our team who had literally never ridden outdoors, was on a borrowed bike with a borrowed helmet and borrowed clothes, biking in running shoes. She did great! We taught her the basic rules of the road and I taught her how to shift gears and she was on her way, which is one of those things you can do when you're 25 and an athlete I guess. One of my childhood friends (so late 30s) didn't buy a bike until 6 weeks before the event and hadn't ridden since she was 10 or 11 and she did great too. I was happy for them but part of me was like "are you freaking kidding me?"
The other thing with training for a long event is that the training needs to be hours and hours and hours of time (like training for a marathon) and I just don't have that kind of time to give up weekend after weekend. I have found that with a 12-25 mile goal, I can go out for an hour or so, be done and move on with my day. When I'm just out riding and not training, it is nice to be out in nature and going distances that you just can't get to when you run.
I started cycling a few years ago when my husband bought a bike and actually used his bike for 2 years before investing in my own. His bike was the wrong size (it was too small for me) but it was ok for 10-20 miles and I did my first triathlon with his bike. I got my own bike last year and did another triathlon on that. This year, for the MS ride, I invested in having my bike properly fitted, finally bought bike shorts, and finally switched to the clip-in (clipless) bike shoes. These changes (esp the shorts) made riding much more comfortable.
So I cycle, and I like it, but I don't love it. The group I did the MS150 with are ridiculously into cycling. One of my friends rides 14 miles to work, then at the end of the day, while waiting for her husband (who cycles 50 miles round-trip to work), she bikes up a mountain once or twice, then rides 14 miles home. They do this 3-5 times a week in the summer. Crazy.