The bike certainly looks like it might be better than my first bike (Trek Navigator 100 comfort bike). I did a century on mine. I did add clipless pedals and had switched my tires from 1.95" to 1,25". Other than that, it was stock, including the suspension seat post and big seat. I also wore normal clothes.

I really don't recall what was especially hard about the ride. I know the legs sure got tired and I know my arms and hands were sore (I leaned too much on my hands and was too rigid in general).

I do not recall how much problem I may have had with things irritating my butt, etc, but if I could survive 100, certainly 50 would be much easier, regardless.

My ride did cover a LOT of time though. I did about 67 miles to start, but then had a 90 minute rest while I had lunch. Then after another 17 miles, I ran into rain so I took a bus away from that area before finishing. That killed about another 45 minutes on the bus. The last 16 miles were murder. My legs had stiffened up and the only thing that kept me going was the fact that I didn't want to start over again on another day! I had another, longer, stop when I put the bike on the bus again to get back home. I still had a mile to go, but if I didn't stop then, I'd have to wait another hour for the next bus! So I did the last mile after getting home, going around a circle in a parking lot.

Total trip time was nearly 13 hours! Riding time was a bit under 8.5 hours.