The Powerhouse Stretch
Some of our races run on the "Powerhouse" stretch of the Charles: A 1000-meter straightaway starting just downstream of the Weeks footbridge and ending just below the Riverside dock and boathouse. There is excellent race viewing, and you can pick your spot to see early, middle, or late stages of the races: along the Cambridge riverbank or from either of the Western Avenue and River Street bridges.
There is no designated parking for the course, and public parking can be scarce. Some events run on Sundays, when parking restrictions are relaxed, so your best bet may be to find a spot on a nearby street.
The map below is specific to the Cromwell Cup, but it's substantially correct for other events: