Challenges are better when we do them together. Set a goal, show up, keep moving — and bring someone with you. All events are family friendly and open to every level.
Snowshoes provided for first-timers. Carpools leave from Aurora at 7:00 AM. Hot drinks at the trailhead.
18 spots still open — save yours now.
Register now, then use the RSVP and carpool sections to lock in your ride and headcount.
Event detailsJoin CECTENA for the 2027 Denver Colfax Marathon! Whether you're running your first race or coming back for another challenge, come run with our community and make movement part of your journey.
How to join
This link registers you directly with the CECTENA team. During registration, choose "Yes" for charity and pick CECTENA from the dropdown.
No events in this category yet — check back soon.
Finish Strong. Run Together! Celebrate the end of our October Running Challenge with a 5K or 10K. All levels and every pace are welcome — let's finish October as one community.
Register for the runEvent detailsA relaxed 14-mile out-and-back along the Cherry Creek trail. Bring your own bike, helmet required, family friendly.
Event detailsOur next 14er! Quandary Peak (14,265 ft) via the East Ridge trail — ~6.8 miles round trip with ~3,450 ft of gain. Meet at the trailhead at 5:30 AM; we start early to beat afternoon storms and get the best views from the summit. This is a challenging hike above treeline — bring layers (windbreaker/shell, gloves, beanie), plenty of water, snacks, and sun protection. If conditions become unsafe, we turn around. Drivers with space, please coordinate rides ahead of time. Come ready. Hike together. Summit together.
Event detailsJoin CECTENA for a beautiful family-friendly fall hike at Kenosha Pass. Enjoy the changing fall colors, get some exercise, meet new people, and experience the outdoors together — families and newcomers welcome. Meet at the trailhead at 7:00 AM; moderate workout with options to hike at your own pace. Bring water, comfortable hiking shoes, layers/weather-appropriate clothing, snacks, sun protection, and hiking poles if desired. Mountain conditions can change quickly — check the weather and come prepared for cool temperatures, wind, and changing trail conditions.
Event detailsBeat the heat with a sunrise loop and coffee at the summit. Beginners welcome — we hike as one group and nobody gets left behind.
Event detailsMeet at the Berthoud Pass trailhead at 5:30 AM (carpool leaves Woolly Mammoth Park & Ride at 4:30 AM). ~6–7 miles, ~1,800 ft gain, summit ~13,100 ft. Windbreaker/shell required — bring gloves, beanie, extra layers, water, and snacks. We’ll be mostly above treeline; if conditions become unsafe, we turn around. Drivers with space, please coordinate rides ahead of time so everyone has a plan by Saturday morning. Come ready. Hike together. Enjoy the mountains.
Event detailsSat, September 5, 2026 · 5:30 AM · Berthoud Pass Parking
Let us know if you're coming so we can plan carpools and headcount. Carpool leaves Woolly Mammoth Park & Ride at 4:30 AM. Windbreaker or shell required — bring gloves, a beanie, extra layers, water and snacks. We turn around if conditions get unsafe.
Berthoud Pass Trailhead, US-40, Empire, CO 80438
The calendar file sets automatic reminders the day before and one hour before start.
Carpool leaves Woolly Mammoth Park & Ride at 4:30 AM. Offer a seat or grab one so everyone knows their ride before Saturday morning.
0 seats open · 0 riders still need a ride
Sun, May 17, 2026
City Park, Denver
72 runners crossed the line together, our largest team yet, raising $9,400 for youth programming.
72 participants
Sat, April 11, 2026
Mount Falcon Park, Morrison
A joint hike with Kinet Bet, ending with music, coffee and a potluck at the picnic shelter.
58 participants
Sat, January 24, 2026
Various — Front Range
Six weekends of snowshoeing, indoor track workouts and nutrition talks through the coldest months.
140 participants
