Series Details


series results

directions & Course map


The 20th 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.

2019 registration is now open!

May 30, 2019

June 27, 2019

July 25, 2019

August 29, 2019

September 12, 2019

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

we now use B-Tag Chip Timing

For regular updates from the Race Director