The Rosedale Ride celebrates its 20th year on March 22. Cyclists can choose from routes of 20, 40 and 60 miles or a 2-mile children’s ride.

When it started in 1994, the ride drew 50 participants. Today it’s grown to more than 1,200 riders who pedal through the rolling countryside of eastern Travis County. The money they raise benefits the Rosedale School of Austin, which serves students ages 3 to 22 who have significant medical, physical and cognitive disabilities.

This year’s event, presented by Samsung Austin Semiconductor, starts at 8:30 a.m. March 22.

The annual Rosedale Silent Auction will precede the ride by two days. The auction, set for 5 to 8 p.m. March 20 at the Rosedale School, 2117 W. 49th St., will feature items from local businesses, including restaurant gift certificates, hotel packages, jewelry, art and entertainment, plus hand-crafted items made by Rosedale students.

Proceeds from both events will help fund equipment, supplies and training that enable the students to learn independence and life skills. This year’s organizers hope to raise $100,000 to build a wheelchair-accessible playground, create art and music therapy rooms, and equip students with tablet computers.

Registration for the ride is $60 ($10 for the Kid’s Ride) at www.rosedaleride.info. Online registration closes at midnight March 19. (Riders may also register the day of the ride.) To make monetary or in-kind donations to the Rosedale Foundation, email info@rosedaleride.info or call 512-414-3617.

Warrior Dash in Smithville

If leaping over licking flames, slogging through mud or scuttling through an earthen tunnel is your idea of fun, plan on a trip to Smithville on March 22 for the Warrior Dash.

The testosterone-infused Dash features 12 obstacles with names like Deadman’s Drop, Storming Normandy and Warrior Roast, spread over a 5K route. New this year is something called Goliath, which looks to involve walking across a beam suspended over a pool of water, scampering up a slanted wall and whizzing down a giant slide into a pond.

Elite athletes can compete in designated competitive waves for a chance to qualify for the Warrior Dash World Championship.

At the end of the race, newly dubbed Warriors will celebrate with live music, "Warrior grub" and beer steins.

Race organizers at Red Frog Events say they expect more than 6,700 competitors at this year’s event. The Texas event is one of more than 50 Warrior Dashes held around the world each year.

Participants are encouraged to raise money for St. Jude Children’s Hospital. Athletes who raise more than $300 for the hospital get access to a VIP area, private showers, catering and a private lounge. Race staff will also collect unwanted shoes (and muddy ones!) for recycling at the end of the race.

To register or for more information, go to www.WarriorDash.com.

Next week in Austin360

A couple of high-profile movies open: "Divergent," the first in a planned trilogy (or perhaps more, as these things go these days), based on three books by Veronica Roth about a regimented society being threatened from within; and "Muppets Most Wanted," a sequel of sorts to the rebooted Muppets movie franchise.