Run along the Cambridge side of the river to the BU bridge. Cut through BU campus back to the river and return on the Boston side.
Follow the Charles on the Cambridge side to the 2nd bridge and return on the river path on the Boston side.
Museum of Science
Head to the Charles and turn right after crossing the Mass Ave bridge. Run all the way to the end and turn right at Museum of Science and return on the Boston side of the river.
Washington to Beacon
Run West on Huntington and turn right on Washington St. Follow Washington for a mile then turn right on Beacon. Take Beacon to Comm. Ave, then turn right on Mass Ave back to campus.