The Numbers Half Day + Zipline

Experience an action-packed day with two of Colorado’s best summer activities. Soar between trees on our Mountaintop Zipline course and then splash your way through nonstop whitewater on the Numbers Rafting section of the Arkansas River.

Experience the best of Colorado with the Arkansas River’s finest whitewater and unparalleled treetop excitement. Adventure seekers will love the steep drops and wilder rapids of the Numbers rafting, and treetop views and thrills will keep everyone’s excitement levels up. Our zipline course is perfect for all levels of adventurer, and physically fit beginners through more advanced rafters will have a blast on the more advanced whitewater of The Numbers.

Minimum age: 15, minimum weight: 50 lbs., maximum weight: 250 lbs.

Trip Highlights

2026 Expectations

The Arkansas River is officially flowing for the 2026 season, and Browns Canyon is shaping up for a fun year on the water. With this year’s Colorado snowpack, flows are coming in at more manageable and technical levels compared to some recent high-water seasons, making it an awesome time for families, first-timers, and experienced paddlers alike. Trips on other sections of the Arkansas are also available to book, and our team will keep you updated on current river conditions and any trip options as your adventure gets closer.

2026 River Conditions

What to Expect

• A full day of excitement
• Half-day ziplining on our Mountaintop Zipline course
• Soar between and among Colorado’s Rocky Mountains, flying from cliff to cliff rather than between platforms
• Raft approximately 6 miles on the river
• Navigate steep sections and 8 exciting class III-V rapids!
• Knowledgeable zip and raft guides to keep you safe and having fun

Trip Itinerary*

• Check-in at our Buena Vista outpost where you will meet you guide
• Gear up for your zipline adventure and head up into the trees
• Fly across 6 lines on our zipline course
• Break for lunch – please pack a lunch for between adventures
• Meet up with your guide and get ready for your rafting adventure
• Spend the afternoon on the water, navigating one of the most exciting stretches of Colorado whitewater
• Return to the outpost and view photos from your trips

*For some trips, the order of adventures may be switched. Please check your individual booking for exact details.

Who will love this trip?

• Adventure seekers looking to experience excitement on the water and in the trees
• Groups looking to venture into the mountains, exploring Colorado’s best scenery
• Families with kids ages 15 and older

Related Packages

1. Mountaintop Ziplining In Colorado – Half Day

   Fly between towering old-growth pine trees and cliffs on our Mountaintop Zipline, a unique Colorado experience fun for all ages. This course may be the most incredible way to see the Arkansas River valley as you experience Colorado from a unique vantage point.  

2. Browns Canyon Half Day + Zipline Package

   This multi-adventure package will keep you energized and smiling the entire day, as you fly through the trees on our Mountaintop Zipline course and then rush the rapids on our Brown's Canyon whitewater adventure.

3. Colorado Via Ferrata – Granite

   Adventure awaits as you conquer the cliffside on this unique mountaintop climbing experience. Feel a rush of adrenaline as you traverse across and above the Arkansas River Valley, using iron rungs, bars, and other features to ascend. Your stomach will drop on our hanging bridge and freefall flight line!

4. Starlight & Full Moon Zipline

   Join us for one of the most exciting and popular Colorado mountain summer adventures - ziplining! The starlight zipline adventure allows you to experience AVA's same cliffside zipline course after dark, with the moonlight zipline taking place under a full moon.

5. Numbers 1/2 Day

   Looking for that quintessential Colorado whitewater rafting experience? Head to the Numbers section of the Arkansas River! If you are an experienced rafter looking to take it to the next level or an adventurous beginner up for a new challenge, the Numbers rafting trip is the perfect exhilarating adventure.

Not sure yet? Here are some other activities

1. Cliffside Zipline Half Day

   <p class="isSelectedEnd">Experience one of the most unique zipline adventures near Denver on our Cliffside Zipline Course in Idaho Springs. Your adventure begins in historic downtown Idaho Springs before boarding our signature Safari Truck for a scenic ride up the mountain. From there, you'll soar across six exhilarating ziplines built directly into the rugged Rocky Mountain landscape above Chicago Creek.</p> As you travel from platform to platform, you'll fly past towering granite cliffs, forested slopes, and sweeping mountain views while tackling exciting aerial features including a hanging bridge, log cross, jungle bridge, and dual race line. This half-day adventure combines adrenaline, incredible scenery, and family-friendly fun, making it the perfect Colorado mountain experience for first-time zipliners and thrill seekers alike.

2. Browns Canyon Rafting + Via Ferrata

   Excitement and scenery await on your Browns Canyon + Via Ferrata full-day adventure. Climb into the Rocky Mountains and rush the rapids of the mighty Arkansas River.

3. Colorado Scenic Float-Half Day

   This wonderful Colorado River float trip is a gently flowing section that is inviting to all ages. You’ll encounter a few small rapids as the Colorado River winds through the Gore Range and Mountain Ranchland.

4. Mt. Princeton Waterfall Ride

   Ride along the scenic Browns Creek approximately 2 hours, taking in beautiful views of waterfalls along the way. The Arkansas Valley holds the most 14,000-foot peaks of anywhere in Colorado; this stunning scenery makes it one of the best places to experience a horseback ride.

5. 24 Hours in Browns Canyon

   Experience Colorado's best overnight whitewater rafting. This trip provides a unique way to explore the most popular stretch of whitewater rafting in the country as you paddle and camp in the heart of Colorado's Rockies.

6. Browns Canyon Sizzler

   The full-day Browns Canyon Sizzler represents the ultimate Colorado rafting experience! This trip offers a full day of classic white water rafting through class III rapids on the Arkansas River, complete with a riverside fajitas lunch.  

7. Gold Rush Clear Creek Rafting Adventure

     Splash down the Clear Creek mining valley on our 1/3 day Gold Rush trip. Just a short half-hour trip from Denver, this family-friendly rafting adventure offers a fun outdoor adventure that everyone in your group will enjoy.