Tour de Camden: A bike ride through the seven-neighborhood Camden community of Minneapolis. 9 a.m.-noon. Creekview Recreation Center, 5001 Humboldt Av. N., Mpls. Free.

The Salvation Army's Most Amazing Race: Teams will race around Minneapolis following clues and participating in mental and physical challenges. 9 a.m.-8 p.m. Various locations throughout Minneapolis.

The Best Days of the Bakken: Themed days with science programs and activities. 10 a.m.-5 p.m. Bakken Museum, 3537 Zenith Av. S., Mpls. Free.

Global Smoothie Smackdown: Sample smoothies created by Midtown Global Market chefs and hear live music. Noon-2 p.m. Midtown ­Global Market, 920 E. Lake St., Mpls. $5.

Midtown Festival: Entertainment and family ­activities. Noon-8 p.m. Stewart Park, 2700 12th Av. S., Mpls.

Historic Aquatennial: The collection of Ken Hafften. 1-5 p.m. Hennepin History Museum, 2303 3rd Av. S., Mpls. $5.

Aquatennial Fireworks: A pre-fireworks bash at 6 p.m. includes live music. Fireworks at 10 p.m. On West River Pkwy. between Portland Av. and the 3rd Avenue Bridge, Mpls.