I live in Columbus and have ridden all sections of the Ohio to Erie trail many times including going the whole way from Cinci to Cleveland last August. Going from Cols. to Cinci is a two day trip at most unless you plan on stopping and sight seeing. I would recommend a side trip to Yellow Springs which is a quaint little town not far from Xenia. There are some pretty good camping sites in that area. If you want more information, PM me.