Trail runs, group rides, climbs, hikes, and meetups across Boulder and the northern Front Range — find something to show up to this week.
Wednesdays, 6:00pm · casual green-level ride, beginner-friendly · Apr–Sep
Rotating Boulder County trailheads
Free and open to all, members and non-members alike. Green = little climbing, no exposure, good for newer riders. Trailhead changes weekly (posted on Meetup).
Wednesdays, 6:00pm · easy 5K or 10K on the creek path, pizza + beer after
In Motion Running, 30th & Walnut
A rotating vendor sponsors each week with samples and giveaways; beer for those 21+.
Thursdays, ~5:00pm · social climb, will belay newcomers, brewpub after
Movement Boulder (lower-right staircase)
A community-run Meetup at the gym (gym day pass / membership applies). Regulars will belay you or set you up with a group if you don’t belay; the crew heads to a brewpub around 7:00–7:30pm.
Thursdays, 5:30pm · road and gravel options
Upslope Brewery, 1898 S. Flatiron Ct
Thursdays, 6:00pm · ~3-mile road loop, no-drop
Thursdays · intermediate-to-advanced (blue/black) ride, brewpub after · Apr–Sep
Rotating Boulder County trailheads
The harder weekly ride, ending at a local brewpub. Start time and trailhead vary by week — confirm on the BMA Meetup before heading out.
Saturdays, 8:00am & 9:00am · endurance rides; earlier ride is longer & faster
Wild Provisions, 2209 Central Ave
Two Saturday starts (8am and 9am) from Wild Provisions; the earlier ride tends to be longer and faster, intended for strong riders.
Boulder Trail Running Breakfast Club
Saturday mornings · 2–4+ hours, easy to steep/technical, breakfast after
Carpool from downtown Boulder, or meet at the trailhead
Start time and trailhead vary by week (posted on Meetup); pace and terrain range widely, so check the specific run.
Sundays · 8:00am summer (Jun–Sep), 9:00am winter · long & short routes, snacks + coffee after
East Boulder Community Center, 5660 Sioux Dr
Start shifts to 9:00am from October through May. Route options run from short loops to dirt trails.
Sundays, 7:30am · easy long run, free & open to the public · location rotates weekly
Rotating Boulder-area locations (see club home page)
Meeting spot changes each week — usually in or around Boulder, occasionally farther afield (e.g. Switzerland Trail). Check the club site for the week’s plan.
Boulder County Audubon Society
Every other month, Sunday afternoons · bird walk + a brewery after, all welcome
Rotating Boulder-area birding spots
Sponsored by Boulder County Audubon; meets roughly every other month, start time keyed to sunset, ending at a nearby brewery. Beginners welcome.
Mondays, 6:00pm · casual ~5K, all paces, no one left behind
Six-plus rotating routes, all roughly a 5K, then beer and food at the brewery.
Tuesdays, 5:30pm · A/B/C pace groups, last group is no-drop
Riders split into 18–20, 16–18, and 14–16 mph groups; only the last (C) group is explicitly no-drop.
Tuesdays, 7:00am · 4–5 miles on trail
An early trail run on open-space singletrack — well-behaved dogs are common on these foothill trails.
Tuesdays, 6:00pm · women’s ride, green/blue · Apr–Sep
Rotating Boulder County trailheads
Women’s group ride with a ride guide; pace and trailhead posted weekly on Meetup.
One email a week with Boulder’s upcoming outdoor lineup. Free, and unsubscribe anytime.
Groups whose schedule rotates or is seasonal — check the source for the next date.
Several no-drop runs weekly · Tue night, Wed morning, Thu 5:30pm, Sun long run · all speeds
Boulder-area trailheads (see club site)
A club built around Boulder singletrack; runs announced via the club’s Google Groups list. Includes a Thursday Happy Hour Run (5:30pm), Tuesday night run, Wednesday morning runs, and a Sunday long run.
A couple of times a week · runs, jogs & hikes, 3–6 mi, all levels, coffee after
Rotating Boulder trails (e.g. Wonderland Lake)
Women-focused; mixes road, trail, and hikes with a strong social bent. Times posted per event on Meetup.
Ongoing · earn-a-bike, repair classes & volunteer shifts
Community Cycles shop, Boulder
Not a group ride but the city’s nonprofit bike hub — recurring repair classes (Maintenance 101 through the Complete Mechanic Series), earn-a-bike, and volunteer opportunities. Shop open Thu–Sun 11am–6pm; check the calendar for current class days.
Colorado Mountain Club — Boulder Group
Recurring early-morning hike + coffee series · volunteer-led, no charge
Boulder-area trailheads (see trip calendar)
One of several regular Boulder Group series (alongside Hiker Happy Hour and the beginner Ascending Hike Series). Dates and trailheads are posted on the CMC trip calendar; sign-up usually required.
Colorado Mountain Club — Boulder Group
Recurring after-work social hikes · volunteer-led, no charge
Boulder-area trailheads (see trip calendar)
After-work social hikes from the Boulder Group; specific dates/times on the trip calendar.
City of Boulder Open Space & Mountain Parks
Free interpretive hikes on Boulder open space · changing dates
OSMP trailheads (Chautauqua, NCAR & others)
Naturalist-led interpretive hikes through the Flatirons open-space system; dates rotate — check the OSMP program calendar.
City of Boulder Open Space & Mountain Parks
Recurring volunteer trail-building & restoration projects
OSMP project sites around Boulder
Hands-on trail work, restoration, and forestry projects; OSMP recruits for several one-day projects (restoration, trail building, vegetation management, forestry) on a rolling basis.
Wildlands Restoration Volunteers
Single-day & weekend volunteer projects across the Front Range · seasonal
Project sites around Boulder County & beyond
Trail building, habitat and river restoration — 200+ projects a year, from single-day events to weekend wilderness work. Register per project via the VolunteerHub calendar.
Ongoing · partner finder, classes & community nights
Facebook Partner Board plus community nights and intro classes; a Bring a Friend Day runs the first Friday of each month. Check the gym calendar for current nights.
Ongoing · adult & youth courses, fresh routes set 3×/week
Boulder’s original gym (since 1991); 15+ new routes set every week. Adult and youth courses on the gym site. Open Mon–Fri 6am–10pm, Sat/Sun 8am–8pm.
Recurring guided climbing trips & courses through the school year
CU Boulder Rec Center / Front Range crags
Bouldering and rope climbing trips aimed at building beginner skills; part of the Outdoor Pursuits trips-and-courses program. Dates per the trips calendar.
Boulder County Audubon Society
Free, mostly seasonal field trips · Walden Ponds, Rabbit Mountain, Pella Crossing & more
Boulder County wildlife areas (see events page)
Free local outings led by chapter birders (Rabbit Mountain, Sandstone Ranch, Golden Ponds & more); spring and fall are busiest. Dates and trip leaders posted on the events page.
Summer member outings into the high country · plus river cleanups & conservation work
Boulder-area & high-country waters
The local Trout Unlimited chapter runs summer Hike-and-Fish trips into the high country (Summer 2026 dates include Caribou Lake, Gourd Lake, and Heart Lake) plus conservation outings; specific dates posted on the chapter calendar.
By appointment · guided trips and shop know-how for all levels
Front Range Anglers, Boulder
A Pearl Street fly shop with guides for every level (Boulder, the Front Range, and RMNP); trips by appointment, plus a Classes and Camps program. Not a recurring meetup but the local fly-fishing hub.
Winter/spring pool sessions + a season of river trips & safety training
Front Range pools & rivers (see club calendar)
One of the country’s oldest whitewater clubs (est. 1954). Beginner Kayaking Class, open pool roll sessions, and member river trips through the paddling season.
Warm-season lake/reservoir paddles + winter roll & rescue practice in pools
Front Range lakes & reservoirs / indoor pools
Members learn from each other and ACA-certified instructors; flatwater paddles in season, rescue/rolling practice in pools over winter. Schedule on the club site.
200+ trips a year · hiking, backpacking, kayaking, climbing & fly fishing
CU’s outdoor program; primarily for students but a model of beginner-focused programming. Browse the trips calendar for current offerings.