The weather will play a factor in a number of weekend events, but most are continuing rain or shine.
In Delta County, more than 500 bicyclists will ride in the Century Ride.
It starts at Gladstone High School at 8am on Sunday.
Also getting under way at 8 Sunday morning– the Iron Oars Regatta at Teal Lake in Negaunee.
Crews from Upper Peninsula and downstate community clubs, Michigan Tech and Northern Michigan University will be competing.
The rowers will race in four-person and eight-person teams.
This event is hosted by the Upper Peninsula Community Rowing Club.