Biking to the Merrimack on Saturday

I scoped out a ride that started in Davis, went up through Woburn to Lawrence, rode along the Merrimack River to Lowell, and then came back via Tewksbury and Woburn again. This came out to 64 miles, according to the GPS software, which promptly gave me a BSOD when I tried to plug in the GPS to upload the route. Alas! It kind of sounds like people who've been riding regularly with me are more interested in 70ish than 65ish, so I can try to make this slightly longer, though it's not immediately obvious where.

Meet up in Davis (Holland St. side, Seven Hills Park, by the bike racks) at 9 AM on Saturday (tomorrow!); RSVP if you want to be waited for.