Steve Glotzer concert: 5 p.m., Kin Studio and Gallery, 4725 16th St., Studio 104, Boulder. Steve Glotzer is a guitarist with a rich career spanning over 50 years. Glotzer’s music style is a unique blend of folk, Latin, jazz, acoustic and blues. Free, kinstudioboulder.com.

Enchanted Mesa Group Hike: 8 a.m., Colorado Chautauqua — Academic Hall, 298 Morning Glory Road, Boulder. This tranquil, beginner-friendly 2-mile trail features a gentle 500-foot elevation gain. Bring a hat, water bottle, and wear comfortable, sturdy shoes. Hikers will be required to sign an experience event liability waiver when checking in for the hike. Free, chautauqua.com.

”Signs of the Times” exhibit: 9 a.m., Museum of Boulder, 2205 Broadway, Boulder. Made up of signs from the museum’s collection, the exhibit evokes memories of shared experiences and places found in Boulder’s past. No matter how made, every sign has a story to tell. It’s the community’s story and a great way to share Boulder’s history. Free-$10, 303-449-3464, museumofboulder.org.

Ramble & Write: 1 p.m., George Reynolds Branch, 3595 Table Mesa Drive, Boulder. Get fresh air and light exercise, reflect on life and socialize at the monthly Ramble & Write meetings. Participants will receive a reflective writing prompt, go for a short walk to brainstorm and chat and return to the library for a writing session and optional sharing time. Journals and pens will be provided for participants to keep, while resources last. Refreshments will be available at the library, though participants are encouraged to bring a water bottle for the walk. For ages 60 and up. Registration required. calendar.boulderlibrary.org.

Peter Sommer Septet concert: 6:30 p.m., Full Cycle Café & Bar, 2355 30th St., Boulder. The Peter Sommer Septet was formed in 2016 to celebrate the music of the great jazz composers and the artistry of the Front Range jazz community. The group regularly performs the music of Duke Ellington, Billy Strayhorn, Thelonious Monk, Charles Mingus and John Coltrane, as well as original compositions by Sommer. $20-$25, fullcyclecafebar.eventcalendarapp.com.

Colorado Triathlon: 5:45 a.m. Saturday, Boulder Reservoir, 5100 51st St., Boulder. Colorado Triathlon is where Colorado comes to race, featuring sprint and Olympic distances, duathlon and aqua bike options. There will be food and beverages provided by Noodles & Co., athlete hoodie sweatshirts and swag bags. $100-$155, withoutlimits.co.

Rock & Reuse plant and garden sale: 9 a.m. Saturday, Resource Central, 6400 Arapahoe Road, Boulder. Shop waterwise plants and reclaimed garden supplies at Resource Central’s summer plant and garden sale. Featuring live music, glass blowing, a U-Fix-It lamp clinic, local artists and more, it’s a celebration of reuse, community and sustainable gardening. Free, resourcecentral.org. Summer Yoga Series: 9 a.m. Saturday, Museum of Boulder, 2205 Broadway, Boulder. Start Saturday with an invigorating and relaxing rooftop yoga class that enhances the mind-body connection. This all-levels yoga class will take participants through a slow sequence of satisfying poses that promote strength, mobility, balance and ease as they enjoy a beautiful view of the Flatirons. This class is appropriate for all levels of experience, and modifications will be offered. Bring a mat from home. $23, museumofboulder.org.

“Rumpelstiltskin and Other Tricksters” performance: 10 a.m. Saturday, Chautauqua Picnic Shelter, 900 Baseline Road, Boulder. Rumpelstiltskin theatre hikes take place every Saturday and Sunday through July 6. In “Rumpelstiltskin and Other Tricksters,” by Patti Murtha, liars will lie, cheaters will cheat and scoundrels will … scound. But fret not, because there is always someone brave enough to combat those who would bring us down for their own selfish reasons. Head to the trail to learn the tails of terrible tricksters and the heroes who thwart them and get revenge for all. The hike will be moderate. Bring water, snacks, hats, umbrellas, sunscreen, blankets to sit on and/or lightweight camping chairs. $20.73-$26.88, chautauqua.com.

Ballet In The Park: 7 p.m. Saturday, Boulder Central Park Bandshell, 1212 Canyon Blvd., Boulder. Join for a vibrant celebration of dance as Boulder Ballet presents a dynamic mixed repertoire program. This special event brings together a curated selection of captivating short works, showcasing the company’s artistic range and highlighting the season’s most memorable performances. $5, 303-443-0028, boulderballet.org.

Editor’s note: Availability and scheduling of events may be subject to change.