LOUISVILLE, Ky. (WDRB) -- The annual Battle of the Bounce is Wednesday from 11 a.m. until 1 p.m. at Waterfront Park.

All the participants will race through a wacky obstacle course, while inside a giant hamster ball.

The Great Steamboat Race paddles off Wednesday night at 6 p.m.

The American Duchess paddle-wheeler will compete against the Belle of Louisville and the Belle of Cincinnati.

Whoever crosses the finish line first, wins.

Beerfest is Wednesday night from 6 p.m. until 9 p.m. at Kroger's Fest-A-Ville.

Tickets are $45 each and include tastings, a souvenir sampling glass and a BeerFest pin.

The Louisville Urban League is hosting Wednesday night's Derby Gala at the Omni Hotel.

The theme is Casino Royale.

Tickets are $250.

Doors open at 7 p.m.

The Lone Bellow featuring Billy Raffoul are live in concert Wednesday night at 9 p.m. at the KDF Waterfront Jam concert.

Admission is free with a Pegasus pin.

Copyright 2017 WDRB News. All Rights Reserved.