I have an older, one speed version of the Halfbike. Some time ago I commented in a post on the Halfbike page that I was planning to do a 100k ride. They suggested 2 things, 1: that I post my experience here, and 2: since I was already 63 years old, to complete 63 miles instead of 62.14.
A couple of days ago (Wednesday) I attempted my self proposed challenge. Here in south Florida it's very hot already so I began at 2:30 AM so I could beat most of the heat. My wife asked me to stay in the neighborhood until daylight so I circled around my community until about 7:15, then came home to recharge, have breakfast, then continue out into the daylight to complete the remaining distance.
The second part was tough, mainly because of the heat. Our morning temps are currently averaging in the high 80's with a feels like temp of high 90's. I had water with me, and during the few stops I made I was able to refill. All in all, I enjoyed it, even stopping occasionally to position my phone against something to get some pictures.
Although I felt great during the ride, after returning home, showering and resting, the old quads really got sore and still are today (Friday) but they are healing well and I should be back to normal by the end of the weekend.
The company also suggested that I ride one more mile every year to celebrate my birthdays. At this time I won't commit to that : ) but meanwhile I am very much enjoying my Halfbike!
Here is a link to my stats on Endomondo www.endomondo.com/users/12389157/workouts/1327741386