This is a great loop for a quick ride right outside of the city. This should take you no longer than 1 hour. You start on Old Railroad Grade and climb till you get to Summit Road. You ride the paved road up till Old Railroad starts again. Then you will want to head East on the Hoo Koo E Koo trail till it meets with the down hill and very treacherous Blithedale ridge. Hoo Koo E Koo is an absolute blast but has a nice little grind at the end. The website that i posted has a really good detail. read more