Series Details


series results

directions & Course map


The 19th Annual Marathon Sports "Lets Run, Have Some Fun & Be Fit" Series is a 5Km race summer series that takes place on Thursday nights around the Charles River.

2018 Registration is now open!

see our registration page for details.

we now use B-Tag Chip Timing

May 17, 2018

June 28, 2018

July 26, 2018

August 30, 2018

September 13, 2018

All Races Start at American Legion Marsh Post #442, 5 Greenough Blvd, Cambridge, MA

For regular updates from the Race Director