Dairy Comedy in the Boe — Headliner, Chris Bryant, is a Los Angeles-based comedian whose latest project Enemies of Dorothy explores “Things Only Gay Guys Can Do.” He was one of the 15 top-rated LGBTQ stand-up comedians chosen for the “Out On Stage” series produced by “Comedy Dynamics” for Pluto TV. Joining him will be two featured comics, Andie Main and ShaNae Ross, and rounding out the evening will be local favorites Caitie Hannan and Andres Becerril; 8:30 p.m., Boedecker Theater, Dairy Arts Center, 2590 Walnut St., Boulder; $12-$15; 303-440-7826.
Go Far Dog Hike — Join us for a hike with your favorite furry best friend. We will go up the south ridge on Mt. Sanitas Trail, and come back down via East and Dakota Ridge for a 3.5-mile loop pups are sure to love. Followed by refreshments in the parking lot and snacks for our four-legged friends; 7 a.m., July 20, Centennial and Sanitas Trailhead, Mapleton Ave., Boulder; free; 720-428-8965.
Wildflower and Weeds Walk — Take a summer wildflower walk and stop along the way to learn how to identify common flowers along with some of our more common invasive species. Situated in the upper Montane life zone, Caribou Ranch is dominated by coniferous forest with many understory plants but it also has many wetlands and meadows filled with grasses and wildflowers. Invasive plants that threaten the native plants will also be discussed. There is also the possibility of spotting moose which inhabit the area; 9 a.m., July 20, Caribou Ranch Open Space, Boulder.
Apollo 11 50th Anniversary Celebration: July 20, 1969 to Today — 9:30 a.m., July 20, Fiske Planetarium, 2414 Regent Drive, Boulder.
Boulder Beer’s 40th anniversary party— Join this social fun run/walk along the beautiful Boulder Creek trail with views of the iconic Flatirons and then finish to an after party; 10 a.m., Boulder Beer Company, 2880 Wilderness Place, Boulder; eventbrite.com/e/rocky-mountain-brew-runs-boulder-beer-cos-40th-anniversary-party-tickets-57211097934?aff=ebapi.
Matt and Rebekah Rolland — Brought together as young musicians by Arizona bluegrass and fiddle festivals, Matt and Rebekah Rolland have since garnered national recognition as performers, songwriters and founders of the Americana group, Run Boy Run, winners of the 2011 Telluride Band Competition; 9 p.m., The Laughing Goat, Boulder; 9 p.m., The Laughing Goat, 1709 Pearl St., Boulder; $10-$15.
REI presents: Making the Ultimate Cup of Camp Coffee— Meet REI at the Rayback Collective to explore different methods for making the best camp coffee; 9:30 a.m., July 21, Rayback Collective, 2775 Valmont Road, Boulder; free; 303-583-9970.
Foraging for Rocky Mountain Mushrooms — In this class, learn the basics of mushroom identification and what to know before going out on a hunt. Zach Hedstrom will also introduce a variety of local mushrooms and their identification features. This is a good class for beginners as well as those who have done some foraging before; 10 a.m., July 21, Harlequin’s Gardens, 4795 N. 26th St., Boulder; $15; 303-939-9403.
Free Rowing Open House — Come out to get a taste of rowing; 10 a.m., July 21, Boulder Reservoir, 5565 N. 51st, Boulder; free; 720-308-3332.
Charles Sawtelle Memorial Mountain Jam — Featuring Che Apalache, The Lonesome Days, Avenhart and Artist-at-Large, Bridget Law. The Charles Sawtelle Memorial Mountain Jam, aka The Charles, is named for Hot Rize guitarist, Charles Sawtelle, who helped start the event in 1989 and was a great supporter of KGNU Community Radio. Celebrating its 31st anniversary, The Charles is a family-friendly mini-festival of al fresco bluegrass and Americana music. Food and beverages are available for purchase. No pets or coolers, please, and no outside food or beverages may be brought into the festival area; 11 a.m., July 21, Gold Hill Inn, Boulder; $30-$35.
Adult Coloring — Each and every Sunday choose a coloring sheet from one of our adult coloring books, use our pencils. Cost includes a glass of wine, a choice of coloring sheets and pencils to work with; 1 p.m., July 21, Settembre Cellars, 1501 Lee Hill Rd #16, Boulder.