Century ride on C&V folding bike.

I'm away from home working, and have my mid/late 80's Dahon folding bike with me, I was hoping to ride a century on it, and I did, but I doubt I'll do it again! Legs felt fine, but I was on bike trail system the whole ride and much of the asphalt was pretty lumpy, that combined with the 16" wheels had me fairly uncomfortable on the bike towards the end of the ride, but it was a really nice day out, just a touch warm, but sunny with blue skies and quite a bit of shade on the path :-)