L St./ LEFT on Columbia Road/ RIGHT on K St.
RIGHT on First St./ LEFT on Summer St / RIGHT on Dorchester Ave.
LEFT on Congress St. - RIGHT on Atlantic Ave./Commercial St.
Water Stop #1 – Water Fountains at Skating Rink (3.7miles)

Continue on Causeway St. to Staniford St./LEFT on Staniford St.
RIGHT on Cambridge St./ LEFT on Charles Street / LEFT on Beacon St.
Continue on Beacon St. to Tremont St./ LEFT on Tremont St
Thru City hall Plaza / Quincy Market to Atlantic Ave. 

Right on Atlantic Ave. To Northern Ave. Bridge
LEFT on Seaport Blvd / RIGHT on Harbor St
LEFT on Summer St. / LEFT on E. Broadway
RIGHT on M St. / Back to L St. ------ (9.0 miles)

For 7.5 miles - Go out to water stop same way as shown above, return via Northern Ave.