Fun Birthday Activities for Adults near Denver

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Make Your Big Day Unforgettable with a Zipline Tour

Your birthday rolls around just once a year, so seize the moment and gather your closest pals for a thrilling challenge. Make this one count—no matter what milestone you are celebrating!

THE TOP-RATED DENVER ZIPLINE TOUR

Get ready for a high-flying birthday bash with your pals to conquer Colorado’s awe-inspiring countryside on our 10-line zipline adventure! Feel the pulse-pounding thrill as you reach speeds of up to 50 MPH, soaring across some of the longest lines in the state. Embrace a test of courage—book now and elevate your birthday to new heights!​

2.5-3 Hrs

70-250 LBS.

Starting at

$99

/per person

Requirements

Make sure you're ready to roll before booking. The requirements per activity vary slightly.

In order to make it across each line safely, we do require guests to fall within this weight range. 

All ages are welcome as long as the weight requirements are met.

To get to the ziplines, guests will take moderate hikes that require average mobility.

Pregnant women, people with severe leg or back problems, broken limbs, or other serious illnesses will not be able to participate.

Closed-toe shoes and active (not too loose) clothing. 

Every participant must sign a Liability & Release Waiver. Participants under the age of 18 must have a signed waiver by a parent.

Add On an Adventure to Your Big Day

+ Epic Skytrek

4-story, 110-element aerial trekking course.

Age: 4 & Up

Add $39 / person

Adventure Tower

Adrenaline pumping free falls, plus climbing wall and rappelling stations.

Weight: 70–250 lbs.

Add $39 / person

+ Ninja Course

A challenge for mind and body—just like you see on TV!

Add $19 / person

What Our Birthday Guests Are Saying

October 2021
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The ziplining is a lot of fun. Sky Trek was great too. Everything was well ran, safe, the staff was friendly and helpful.

— Nicole F
September 2021
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Great instructors! They were friendly and informative and made us feel safe. It was a great ending to our day after climbing at the Sky Trek.

— Savannah L
May 2023
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These guys are VERY MUCH WORTH the cost! They really know what they're doing, are great with experienced zip-liners and newbies, and are a HOOT!

— Rachel M
July 2021
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The whole ziplining experience was awesome! My adult kids and I had blast. We actually also did the sky trek which was great as well. Very challenging at first but worth the effort.

— Jennifer S
May 2021
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Amazing family fun! Thanks to guides Nick and Carson who were kind, helpful and patient! Thanks for the memory! Kids had a blast at the Sky Trek afterward...a full day!

— Kim W
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Frequently Asked Questions

Currently reservations are required in order to maintain a safe amount of people doing any given activity at once. 

Guests are required to arrive 30 minutes early to complete waivers in person. Refunds will not be issued for late arrivals. If we can accommodate you on a later trip we will do our best, but there is no guarantee.

All reservations are under the terms of a strict no refund policy once the booking has processed and the payment has been authorized. Reschedule requests within 24 hours cannot be made, will be charged full price, and will not be refunded. We do not allow cancellations.

We recommend that you leave valuables at home or locked in your car. Castle Rock Zip Line Tours is not responsible for property lost, damaged, or stolen during your tour. 

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