Bradley A. on Arnold Arboretum Trail
I've hiked in the Arboretum multiple times. There are several different landscapes and you there are pretty views on top of the hills, which aren't difficult to summit.
I live right down the street and LOVE LOVE LOVE the arb. Wouldn't say there's a lot of "hiking " but it's a lovely place to walk your dog (especially at peters hill), ride your bike, and it's a good place for conditioning when training for a race. I can honestly say this place is one of the reasons I can't bring myself to move...there's nothing in or around the city quite like it.
A very nice walk, considering it's accessibility from the city. Variety of trees provide a nice view. Fairly easy walk, often populated with retired couples and dogs being walked. Worth a visit for anyone living in the city, however I wouldn't recommend the trail for a tourist on a tight schedule.