Trail rides, Nordic miles, group runs, lake paddles, and meetups across Breckenridge, Frisco, Dillon, and Silverthorne — find something to show up to this week.
Six-race XC series · Wednesday evenings · late May–mid-Aug
Rotating Summit County trail venues
The county’s flagship grassroots cross-country series — long, short, and kids courses on rotating trails, Wednesday evenings (roughly 5–9pm). Complete five of six to qualify for the series overall. Confirm exact 2026 dates on the Town page.
Five-race series · Wednesday evenings · summer
Rotating Summit County trailheads
The 23rd-annual cup-free trail series — short and long courses ages 10-plus, each race followed by a post-race party. Venues rotate (French Gulch, Baker’s Tank, Carter Park and more); confirm 2026 dates on the Town of Breckenridge page.
Spring & Summer series · Wednesday evenings · April–Oct
The club’s keelboat series races Wednesday evenings; dinghies race Thursdays. Membership-based. The racing pages are dynamically loaded — confirm exact start times there.
Weekly · Wednesday evenings · from June 10
Cutthroat Anglers, Silverthorne
A free immersive evening workshop series on fly-fishing fundamentals, taught by Cutthroat’s guides every Wednesday from June 10 through the summer. Confirm the start time on the events page.
Weekly · Thursday evenings · June–Sept
A casual Thursday-night sailing race on Lake Dillon, June through September, open to members and non-members of all skill levels — and the club welcomes people without boats to come crew. Confirm the start time on the club’s racing page.
Weekly evening ride · summer
Varies — see Spoke channels
A faster Thursday-evening Spoke ride; time and route shared mid-week through their WhatsApp and Strava community.
Weekly · Friday mornings · summer
Slow, flower-stopping walks of two miles or less for the 50-plus club, with lunch after. Confirm the exact start time on the activities page; club dues apply.
Weekly · Saturdays 10am · summer
Rocky Mountain Coffee Roasters, Frisco
Spoke’s signature ride — a social, inclusive-pace roll-out from a Frisco coffee shop, typically 15–20-plus riders on flexible routes. The easiest way to plug into the county’s cycling scene.
Weekly social MTB ride · summer
Varies — see Spoke channels
One of Spoke’s recurring social rides; exact time and meeting point are shared mid-week via their WhatsApp and Strava community before each ride.
Friends of the Dillon Ranger District
Weekly · Sundays · summer through early Sept
Copper Mountain (American Eagle lift)
A free, family-friendly Sunday hike at Copper Mountain — chairlift ride up, then a naturalist-led walk to the alpine rock garden. Spanish interpretation offered.
Weekly · Mondays 9:30am · June–Sept
Rotating: Frisco Marina / Dillon Amphitheater / Breck Rec Center
Open to all ability levels with route options of varying length; riders form their own groups and ride at their own pace (effectively no-drop). Start location rotates among valley trailheads and posts the week before.
Weekly · Monday mornings · July–Sept
Moderate, conversational-pace backcountry hikes for the 50-plus club. Sources differ on the exact weekday (Monday vs Tuesday) — confirm on the activities page. Club dues apply.
One email a week with Summit County’s upcoming outdoor lineup. Free, and unsubscribe anytime.
Groups whose schedule rotates or is seasonal — check the source for the next date.
Member runs & socials — see schedule · year-round
Rotating Summit County trails & roads
A sustainable year-round adult running community welcoming all abilities and paces; the run/events calendar is shared with members (annual dues from $23). Trail and road; the trail side is dog-friendly where land allows.
Annual trail race · late summer
Maverick Sports’ flagship high-alpine trail race (half-marathon and 10K options) over Breckenridge ridgelines. Annual calendar event — check the site for the 2026 date.
Annual · July 4
Breckenridge’s Fourth of July tradition — best known as a mountain-bike race but anchoring a day of community events on Main Street. Annual; confirm the run-format offerings for 2026.
Summit County Mountain Bike Alliance
Trail-work days, group rides & clinics — see events · seasonal
Varies by event
Summit County’s IMBA chapter runs trail-work days, skills clinics, group rides, and socials through the season; specific dates post to their events page rather than a fixed weekly slot.
Each full moon · ~25 mi · summer nights
Rotating Summit County locations
A roughly 25-mile ride under each of the summer full moons, 10pm start; front and rear lights required. Routes and start points rotate.
Friends of the Dillon Ranger District
35+ projects · 9am starts · June–Sept
Varies by project (sent after registration)
Trail-maintenance days across the White River National Forest — no experience required, all ages welcome (kids supervised), most run 9am to noon. A free annual waiver and registration are encouraged; walk-ins accepted.
Breckenridge Open Space & Trails
Several times a week · summer
Rotating Breckenridge open-space trailheads
Free, roughly two-hour naturalist-led interpretive hikes — wildflowers, pollinators, birds, dark sky — at rotating locations like Cucumber Gulch and the Blue River Trailhead. Dates post to the events calendar.
Colorado Mountain Club — Gore Range Group
Member-led trips — see calendar · year-round
Varies by trip
Member-led hikes, backpacking, climbing, snowshoe, and ski-touring trips ranging from easy to mountaineering, posted to the chapter calendar. CMC membership required.
Summit County Wild Outdoor Women
Member-posted outings · year-round
Rotating Summit County trailheads
A women-only Meetup community organizing hikes, snowshoe outings, skiing, and biking through member-posted events. Cadence varies with what members schedule.
Eagle Summit Wilderness Alliance
Summer trail crews & ranger patrols · seasonal
Eagles Nest / Ptarmigan Peak Wilderness trailheads
Volunteer trail crews, crosscut sawyers, and Volunteer Wilderness Rangers maintaining and patrolling the four Wilderness areas across Eagle and Summit Counties each summer. Sawyer work requires training.
Breckenridge Recreation Center
Daily instruction · belay classes & youth programs · year-round
Breckenridge Recreation Center
The county’s main beginner gateway — staffed instruction most afternoons, paid belay classes with a follow-up skills check, free bouldering orientations, and youth climbing programs. Rec-center entry or class fee.
Member access daily · staffed Mon–Fri evenings · year-round
Summit Climbing Gym, Silverthorne
Member-owned co-op with bouldering, top rope, lead, and weights; belay certification and prior experience expected (beginners are pointed to the Breck Rec Center). The de-facto community window is weekday evenings when staff are present. Confirm current open status before relying on it.
ASA course sessions · summer
ASA-certified sailing courses (roughly 12 hours, mostly on the water) from novice to advanced, run as scheduled sessions through the summer. Register by session.
Daily naturalist-led tours · summer
Naturalist-led interpretive kayak tours on Dillon Reservoir — family, adult, and sunset options — departing daily in summer by reservation. Beginner-friendly, all ages.
Daily rentals & tours · summer
Stable SUP and kayak rentals plus guided outrigger-canoe tours on Lake Dillon, daily in summer. Reservations requested a day ahead; walk-ins first-come.
Multi-week youth camps · summer
Multi-week youth sailing camps from beginner through advanced — rigging, knots, boat handling, safety, and capsize recovery, with instructors on the water.
Open daily 9am–6pm · summer
Frisco Bay Marina, Frisco Peninsula
Daily summer rentals of kayaks, canoes, SUPs, pedal craft, and sailboats on Dillon Reservoir, with guided paddle tours and sailing instruction through partner outfitters out of the same docks.
Year-round guided trips · by appointment
Breckenridge (Blue River & area waters)
Year-round guided wade and float trips and beginner lessons from Summit County’s longest-running fly shop, with the Blue River as home water. By appointment rather than on a fixed schedule.
Monthly meetings & member events
Summit County (see chapter)
The local Trout Unlimited chapter holds monthly meetings and member events alongside its coldwater-conservation and habitat-restoration work. Confirm the meeting day and place via the chapter or its Facebook events; TU membership to join.
Statewide field trips & convention · varies
Varies; Dillon Reservoir is the county hotspot
No Audubon chapter or standing bird-walk club is based in Summit County; CFO runs the statewide listserv, field trips, and a convention, and maintains the directory of local birding groups. Dillon Reservoir is the county’s top eBird hotspot.