The 2026 edition has been announced. The event will take place on 01 Feb, 2026 (Sun). The details about this event may change. Please check the official website for possible updates.

Old Man Winter - Lyons, CO

Name: Old Man Winter - Lyons, CO
Start: 2026-02-01
End: 2026-02-01
Rating: 0

Lyons, CO, United States

01 Feb, 2026 (Sun)

About the event

The Old Man Winter Rally is an endurance event in Colorado featuring mixed-terrain cycling and running courses, including gravel, snow, climbs, and single-track trails. Participants receive custom event gear, a neck gaiter, a training plan, a race bib with coupons, and access to online contests. Aid stations provide food and hydration along the course. After the event, participants can enjoy a hot meal and drinks at an after-party. There are opportunities to win prizes, including “snowflake” awards and a prize purse for top finishers in each category.

Races offered by this event

You have 12 weeks to prepare

100K Bike

01 Feb, 2026 (Sun) - 09:30

Cycling

100 km

View course map

The 100km course is a challenging mixed terrain route including rolling gravel roads, classic Boulder County climbs, fast tarmac, and the infamous Rowena Trail. Rowena connects Lefthand Canyon to Sunshine Canyon and is a 2 mile stretch of historic gold mining railroad line. It is always covered with snow in the winter, so you’ll need to plan accordingly when choosing your bike set up. You will then decend a twisty gravel road and hit the end of the 1st timed section. You will NOT be timed going down Sunshine Canyon or through the City of Boulder so take as much time as you want to get down the canyon safely and recover. The 2nd timed segment starts as you start up Linden, the 1st of two punchy climbs. Once you hit the top old Old Stage Rd, it’s pretty flat for the final 20 miles on the gravel roads back to Lyons. You’ll definitely earn your beer and hot chili after taking on this course!

Solo

On site

Mixed

Extreme

Out & back

Timed

Mountain range

Nature

Park

Sand

Snow

Downhill

Mud

Scenic

River

Valley

Asphalt

Fun

Gravel

Ice

Rural

Single track

Wildlife

Family friendly

City

Beer

Forest

10K Run

01 Feb, 2026 (Sun) - 10:30

Running

10 km

Start by Sand Stone Park and run through the Town of Lyons and along streets and gravel trails. You’ll climb up to the base of the foothills, then jump on a single track section of the Picture Rock trail. Once you hit Red Gulch Road, you’ll run alongside the St. Vrain river and a super cool red rock wall. Once you see the turnaround point, you can grab some refreshments or loop back towards town. On your way back, you’ll run through Bohn Park on gravel trails, then hit 2nd Ave for the home stretch to the finish line by Sandstone Park! It’s a fun course with lots of scenery, mixed-terrain, and a great vibe.

Solo

On site

Mixed

Rolling

Single loop

City

Nature

Park

Snow

Mud

Scenic

Valley

Gravel

Rural

5K Run

01 Feb, 2026 (Sun) - 11:00

Running

5 km

Solo

On site

Mixed

Rolling

Single loop

City

Nature

Park

Snow

Mud

Scenic

Valley

Gravel

Rural

50K Bike

01 Feb, 2026 (Sun) - 12:00

Cycling

50 km

View course map

This course is a tour of some Boulder County’s best riding, including non-technical gravel riding and scenic views of the Rocky Mountains. There is enough rolling terrain to make the course challenging, but no major climbs. The aid station at Butter Ranch will be warm you up and keep you fueled before the last stretch back to Lyons.

For those that ride AND run, this is the course that is the bike portion of the Run/Bike Combo.

Solo

On site

Mixed

Rolling

Out & back

City

Family friendly

Snow

Mud

Scenic

Beginner friendly

Fun

Gravel

Ice

Rural

The map shown is based on data from the past edition of this event. The actual route for the upcoming edition may be different.