Would you like to go on a little walk? Head to Kamakura, and bring lots of water with you!
If you start in Kita-Kamakura like I did, the start of the trail is about 10 minutes from Kita-Kamakura Station, but there are four shrines between the station and the trail head. It's possible to take a side trail to Jufukuji, as well. If you follow the trail all the way to the Daibutsu, you can then walk down the hill to Hase Station, from where you can get back to Tokyo or on to other destinations. While the trail takes 60-90 minutes to complete, those who like to stop and explore the temples, or want to take a bunch of pictures, should plan to spend even longer - I think I totaled about three hours including a quick lunch stop in Hase.
A GPS log of someone's hike along the trail in 2009 can be found at this blog.