Underwearness Drop Your Drawers Fun Run: Underwearness, a local nonprofit that provides underwear to children in need, is hosting a 3K obstacle course—and yes, you have to wear pants. Held at the Jefferson County Fairgrounds, the course will include a 16-foot slide, a ginormous ball pit, and so much more. The “couch potato” option (which you can elect when registering) invites guests who are not fond of crawling to skip the course and start with the after party including drinks, live entertainment, and an underwear toss with prizes. All attendees are encouraged to bring new packages of underwear to contribute to this foundation, which is 100 percent run by volunteers. Friday, 6:30–10 p.m.; Jefferson County Fairgrounds, 15200 West 6th Ave., Golden; $20–$220

LUNG FORCE Colorado Awareness Walk: The American Lung Association is hosting half- and quarter-mile walks around the country to raise awareness and collect donations to fight the number one cancer killer in the U.S. In addition to the walk there will be interactive areas to teach participants about lung cancer, lung health, and share stories of hope. Passports will be handed out the morning of the event to direct users around the activities; and a fully stamped passport enters guests into a raffle with prizes ranging from a AAA membership to mountain getaways. The funds raised—they’re nearing their $40,000 goal with less than $10,000 to go—will benefit early detection methods and more advanced treatments. Saturday, 9 a.m.–1 p.m.; Centennial Center Park, 13050 E. Peakview Ave., Centennial; free (donations encouraged)

Voz y Corazón Art Show & Benefit: The Mental Health Center of Denver’s Suicide Prevention Program, Voz y Corazón, provides education, support, and treatment for teens who need it. One of the coolest parts of this program is that participants play a major role is designing the activities, which focus on artistic expression, mentorship, and suicide prevention training. One initiative is to cultivate internal strength, as well as the courage to reach out to family and friends when there is concern for possible suicide. In its 12th year, the fundraiser will include a silent auction, raffle, dinner, and live entertainment, with Spanish translation available. Attendees under the age of 17 are free. Saturday, 4–8 p.m.; Dahlia Campus for Health & Well-Being, 3401 Eudora St.; $40–$90

Golden Retriever Rescue of the Rockies 20th Anniversary Gala: Watch out for the paw-parazzi at this event. With four-legged friends, a red carpet, and a full bar, what could go wrong? Dubbed the “Golden Globes,” this dinner and auction event benefits GRRR, a rescue organization that works to make sure golden retrievers find loving, happy homes. Silent and live auctions will feature offerings like dog training, spa treatments, golf packages, and vacation getaways to places like Santa Fe and San Francisco. Attendees also get a chance to meet some of GRRR’s newest transcontinental pups—golden retrievers from Turkey that have been brought to the U.S. to find fur-ever homes. Saturday, 5:30–10 p.m.; The Tivoli Event Center, 900 Auraria Pkwy.; $125–$950

The Center’s 40th Anniversary Gala: Denver’s PrideFest has more than 350,000 guests, and there is one organization (and a whole lot of volunteers) to thank for putting on the extravaganza. The largest organization representing Colorado’s LGBT community in the Rocky Mountain Region, The Center’s anniversary event will include a seated dinner, live and silent auctions, and an awards ceremony to celebrate 40 years of activism. Guests can bid on auction items, including spa packages, international getaways, and local date nights. Proceeds from this evening will fund The Center and their overall effort to create programs and events to engage and enrich the LGBT community of Denver. Saturday, 5:30–11 p.m.; Sheraton Denver Downtown Hotel, 1550 Court Pl.; $175–$250