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Summer Vibes Bike Rally & Run
Hundreds of riders under the Summer Vibes start arch

Bike event · 11:00am start

50K Gravel Rally

50km / 32 miles with 1,189ft of climbing. A classic Boulder County route that is about 50/50 gravel and pavement. You will love the rolling gravel roads while you make new friends on course.

32 miles1,189' climbing1.5 to 3 hoursFrom $109
Register for the 50K See the course

Our most popular ride

Rolling gravel at the base of the Foothills

The 11am start means a relaxed morning, and you roll back into Bohn Park just as the bands start. It is the go to ride for a great workout with killer views, and it is the ride half of the Run / Bike Combo.

Chip timed with product prizes for the top 3 M/F/NB, but most people are here for the party pace and the aid station in Hygiene.

Rider on a straight gravel road with the sun behind
Most popular

The course

A classic loop through the rolling gravel roads

50K Gravel Rally route

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Painted sunflower post beside a gravel road with mountain views

Bucolic day dreams

While riding the 50K course you pass art, mountain views and friendly horses.

Group of gravel riders smiling on a dirt road

Gravel for every rider

Ride fast or chill and vibe on the energy of riding with hundreds of your fellow gravel riders.

Friends cheersing drinks at the aid station

Aid station party

Not only will we keep you fueled, you may want to stay and have some fun at the aid station in Hygiene. We have surprises for you.

Longs Peak and Mt Meeker with snow on the summits

14ers for daze

Longs Peak and Mt. Meeker will be cheering you on as you roll back into Lyons.

Good to know

Questions riders ask

More on the FAQ page.

Cyclists must be 10 years old on event day. Runners can be 6 and up. There are discounted entries for kids.

Most riders finish the 50K gravel course in 1.5 to 3 hours. The 100K gravel course takes 3.5 to 7 hours. The 56.5 mile Road Rally takes 3.5 to 5 hours. The 5 mile run takes 30 minutes to 1 hour, and you are welcome to walk it.

You will see everything from road bikes to mountain bikes. Because the course has gravel, we recommend tires at least 25mm wide. Knobby tread helps with traction. Gravel and cyclocross bikes are the most common, but on a dry day a road bike with wide tires might be faster. You will get the most high fives on a fat bike.

Yes, you are welcome to ride an ebike, but your time will not be eligible for prizes. You also cannot use an ebike to help another rider get a better time.

Other ways to earn the party

All events →
Big day out
Gravel rider in a pink jersey on a dirt road near Lyons 8:00am start

100km · 4 timed segments

100K Gravel Enduro

Party pace between segments, then give it everything on four timed sections.

from $129

Details
Do both
Collage of runners and riders at Summer Vibes 9:00am + 11:00am start

5 mile run + 50K ride

Run / Bike Combo

Run two laps at 9, recover, then roll out on the 50K gravel course at 11.

from $129

Details

32 miles, then a pool.

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