Hastings, MN (Learfield Wire Services/TTWN Media Networks) -- An estimated 30-thousand motorcyclists rode today on the Wisconsin/Minnesota border for the annual "Fall Flood Run."

The annual event is a fund raising trip for Gillette Children's Hospital of Saint Paul. Participants rode between the Twin Cities' area and Winona along the Mississippi River. The motorcyclists can ride on either the Wisconsin or Minnesota side, or both. Each has a 105-mile route, and bikers can donate double to ride the entire route in both states, a 210-mile stretch.

It was likely a bit uncomfortable for the riders today with highs in the 80s and high humidity.

The Flood Run started in 1965 so bikers could help place sandbags on the flooded river at Winona, and it has grown into two annual rides each April and September.