So we didn't have to do the whole 14 miles since we went in and only part of the way back on the first day, then continued on through Hop Valley the next day. This was in July, so it was brutally hot, but it was a great hike. I loved the scenery all along the hike.

So I second the recommendation for Kolob Arch, if it isn't too long. Btw, I don't remember it being difficult--there wasn't much elevation change.