Red Bull Flugtag Portland, 11 a.m. Teams of five will take their human-powered flying crafts and fling them off a 28-foot-high flight deck into the Willamette River in hopes of breaking the flight distance record, along with earning points for creativity and showmanship. First flight at 1 p.m. Tom McCall Waterfront Park, 1020 S.W. Naito Parkway, Portland; free. www.redbullflugtag.com
Ridgefield First Saturday, 9 a.m. to 2 p.m. The Rover Romp celebrates all things canine beginning at 9 a.m. with a dog walk from the Ridgefield Church of the Nazarene. There will be a hot dog eating contest, dog costume contest and silly dog tricks. Visitors can make water rockets and juggling balls starting at 10 a.m., and participating downtown restaurants will host a Taste of Ridgefield progressive lunch from 11:30 a.m. to 2 p.m. Ryan Meagher of Opus School of Music will offer a guitar clinic at 1 p.m. at Old Liberty Theater. Ridgefield Church of the Nazarene, 747 Pioneer St.; Port of Ridgefield, 111 W. Division St.; Old Liberty Theater, 115 N. Main Ave., Ridgefield; free, Taste of Ridgefield: $3, five tickets are $12; clinic: $3. 360-887-3557 or www.ci.ridgefield.wa.us/community/page/first-saturdays
Western Region Dragon Boat Racing Championships, 8:30 a.m. to 4 p.m. Aug. 1; 9 a.m. to 4 p.m. Aug. 2. The Pacific Dragon Boat Association holds championships every two years, selecting regional teams to represent the United States in the World Championship. Visitors can cheer on the professional, club and amateur teams as they take on the 1,500 meter course. Vancouver Lake Regional Park, 6801 N.W. Lower River Road, Vancouver; free. www.paddlewest.net
Fairs & festivals
Fremont Fest, 10 a.m. to 5 p.m. The 29th annual community festival features a kids’ bike and pet parade with firetrucks, marching bands and vintage cars. There will be live music, street vendors, attractions and games for children and adults. Northeast Fremont Street, between 41st and 49th streets, Portland; free. www.beaumontvillagepdx.com/fremont-fest