Conquer one of Colorado’s most continuous and demanding half-day rafting runs on the Numbers section of the Arkansas River. Fast, technical rapids, canyon walls, and expert guiding make this a top pick for experienced paddlers.
More ways to explore the area's outdoor wonders
The raft buckles against the current and the river answers—rock-churned water pushing you through a narrow ribbon of Colorado sky. On the Numbers section of the Arkansas River, rapids come at you in quick succession; they’re numbered because there are too many to name. The canyon’s walls close, the air smells faintly of pine and cold water, and every stroke feels earned.
Difficulty
expert
Duration
3 hours
Fitness Level
Expect high exertion: strong core, shoulder endurance, and the ability to follow rapid instructions under stress.
Wildlife
History
The Arkansas River corridor supported mining and rail communities in the 19th century; contemporary rafting grew from local guides who routed commercial trips through these same canyons.
Conservation
Browns Canyon and the Arkansas Headwaters Recreation Area manage flows and access to protect riparian habitat; practice leave-no-trace and follow outfitter guidance to minimize impacts.
Reserve your spot on the Numbers Half Day High Adventure Whitewater Rafting Tour today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Arrive Early for Briefing
River Runners requests arrivals 45 minutes before launch for paperwork, gear, and a safety briefing—don’t be late.
Wear Secure Footwear
Closed-toe water shoes with good tread prevent slips in the boat and protect toes from river rock.
Sun and Hydration at Altitude
Bring a refillable water bottle and apply water-resistant sunscreen—altitude intensifies sun exposure and fatigue.
Know Medical Limits
This trip is physically demanding; travelers with heart, back, or pregnancy concerns should not participate.
Personal Flotation Device (provided)
A properly fitted PFD is mandatory for safety on continuous whitewater.
Sturdy Water Shoes
Protects feet during entry/exit and gives grip in the raft.
Thermal Layer or Wetsuit Top
Spring flows are cold—an insulating layer helps prevent chills after spray and splashes.
spring
Sunglasses with Retainer and Sunscreen
Protects eyes from glare off the water and skin from high-altitude sun exposure.
summer