Thursday

Boulder Tuesday Thursday Hikers: Join outdoor enthusiasts for a day hike with this leaderless, rule-following drop-in group that breaks into smaller groups and carpools to various trailheads. Drivers are reimbursed for expenses. Bring a lunch, water and snacks, and be prepared for all weather conditions; 9 a.m. Thursday, North Boulder Park, Seventh and Dellwood, Boulder; free; 303-910-9944.

Boulder Cycling Club Thursday evening rides: Join BCC for Thursday evening road or gravel rides. For a complete calendar and to learn more about BCC, visit the website; 5:30 p.m. Thursday, Full Cycle’s The Tune-Up Tavern & Espresso, 2355 30th St., Boulder; free; bouldercyclingclub.org.

Saturday

Boulder Cycling Club Saturday morning ride: Join the club on Saturday mornings at Sanitas for road biking. Start times vary throughout the season, moving earlier as the weather warms up and rides get longer; 9:30 a.m. Saturday, Sanitas Brewing Co., 3550 Fontier Ave., Unit A, Boulder; free; bouldercyclingclub.org.

Shamrock 7K at Wibby Brewing: Head to Wibby Brewing for the Shamrock 7K and great, local craft beer; 10 a.m. Saturday, Wibby Brewing, 209 Emery St., Longmont; free-$59.19; eventbrite.com.

Sunday

Avery Brewing Company Lucky Leprechaun 4K: The Lucky Leprechaun Fun Run celebrates the origins of Saint Patrick’s Day. Avery Brewing Company will be making an “Irish Red Ale,” and Irish band Avourneen and Boulder’s Mc Teggart Irish Dancers will be performing; 9 a.m. Sunday, Avery Brewing Company, 4910 Nautilus Court, Boulder; $35-$45; 720-532-5549.

Tuesday

Boulder Cycling Club Tuesday evening ride: Join the club Tuesday nights to get out on the roads. This club welcomes cyclists of all levels; 5:30 p.m. Tuesday, Twisted Pine Brewing Co., 3201 Walnut St., Boulder; free; bouldercyclingclub.org.