The LMJS Couples Relay is a two person relay with each team member running one 5K lap around Lake Merritt. Teams can be comprised of any combination of genders (note: on female/male teams the female runner will run the first leg). There are prizes for winners in each age division plus oldest and youngest team. Lots of goodies and prize drawings for all runners. Must be present to win.
More detailed information here. Online registration is closed. If you'd still like to participate, some same day registration is available. Get to the Lake by at least 8:30 to register.