You can celebrate the end of winter with March Muddy Madness, a 3-mile run or walk along a muddy track with various obstacles and challenges. There will also be a course set up for those 16 and younger who’d like to participate in Mini Madness; parents must do the course with those 10 and younger. Preregistration is recommended. The event is hosted by Northwest Personal Training.
When: 8:30 a.m. event instructions, 9 a.m. start Sunday.
Where: Ashley Heights neighborhood, Northwest McCann Road and 141st Street, Vancouver.
Admission: $30, free for children 16 and younger with paying parent.
The muddy run is among several options for getting out and about this weekend. Others include a volunteer tour and robotics competition.
Voices sing for a cause
The annual Heritage High School Choir Benefit Concert is a popular community event that helps benefit Share, a Vancouver nonprofit dedicated to helping the hungry and homeless. The show will feature the theme “Spectacular, Spectacular,” with the 150-member choir in a costumed and choreographed performance.
When: 7-8:30 p.m. Saturday.
Where: Heritage High School, 7825 N.E. 130th Ave., Vancouver.
Admission: $5, donations of nonperishable foods encouraged.
Become a refuge volunteer
The Ridgefield National Wildlife Refuge will hold a volunteer open house, where attendees get the chance to learn more about volunteering at the refuge and behind-the-scenes tour of Bachelor Island, an area typically closed to the public. There will also be pizza, refreshments and raffle items.
When: Noon to 3 p.m. Saturday.
Where: River S Unit on South Hillhurst Road, south of Pioneer Street, Ridgefield. South Ninth Avenue becomes South Hillhurst Road.
Admission: Free, reservations requested.
Local robots go head to head
Watch student-built robots from Evergreen Robotics, Skyview Stormbots, and Team 2471, the Camas-Washougal-Hockinson high schools team, compete in the final day of the Autodesk Oregon Regional robotics competition. The teams must solve an engineering design problem using robots designed for prescribed tasks against a field of competitors. It is part of Oregon FIRST Robotics.
When: 8 a.m. to 5 p.m. Saturday.
Where: Memorial Coliseum, 300 N. Winning St., Portland.
Red planet adventure with ‘John Carter’
Civil War veteran John Carter (Taylor Kitsch) finds himself mysteriously transported to Mars. He is called Barsoom by the planet’s inhabitants, who are embroiled in their own bitter conflict. John becomes wrapped up in the fate of Tars Tarkas (Willem Dafoe) and Princess Dejah Thoris (Lynn Collins) as he must rediscover his own humanity to save a world on the brink of collapse. “John Carter” is rated PG-13.
Where: Battle Ground Cinema, 1700 S.W. Ninth Ave., Battle Ground; Cinetopia, 11700 S.E. Seventh St., Vancouver; various Regal Cinemas locations.
Admission: Varies by theater.
Telephone: Battle Ground Cinema, 360-666-7200; Cinetopia, 360-213-2800; Regal Cinemas, 800-326-3264.