The first show I filmed on in Alaska was a super silly MTV reality show called “Slednecks”. We followed twenty-somethings who partied and did crazy stunts. That was early in my career, when I myself was a twenty-something who partied and did crazy stunts, like whitewater rafting Alaska’s biggest rapids.
Towards the end of my four-month gig, I got a couple of days off, my sister flew up, and we drove out to Six Mile Creek near Hope. The two of us had rafted the Grand Canyon a few years earlier, so it seemed like an obvious call. It was a blast. In the photos you’ll see my overly confident face sitting upfront in the purple jacket and red helmet.
Since that trip I’ve been working in Alaska almost exclusively, in and around its wild rivers. I’ve shot stories for the BBC about packrafting in Kavik, used inflatable dinghies as boat shuttles on the Bering Sea, and floated up and down a good number of Alaska’s rivers on various hunts. It usually hasn’t been for pleasure, but it’s always been fun. Here’s what you need to know about whitewater rafting in Alaska.
Quick Guide to Whitewater Rafting in Alaska
When to Go Whitewater Rafting in Alaska
Alaska’s rafting season runs May through September. Spring snowmelt creates the highest water and most intense rapids, great for experienced paddlers, but some Class V sections may be too high for guided trips. Summer brings warmer temperatures and more predictable conditions, which is why most families and first-timers book July and August.
A few practical notes: most outfitters close by mid-September. Some spots open as early as May, others not until June. Water temperature runs around 36°F year-round, all reputable operators will put you in a drysuit regardless of air temperature, which is non-negotiable in glacially-fed rivers.
Best Rivers for Whitewater Rafting in Alaska
Alaska has some really fantastic whitewater rafting opportunities.
The Nenana River – Denali (Class I–IV)
The most popular whitewater rafting destination in Alaska, located at the entrance to Denali National Park. Two main routes: the Canyon Run takes experienced paddlers through Class III and IV rapids with names like Razorback, Coffee Grinder, and Ice Worm, 11 miles of canyon whitewater. The Wilderness Run is the family-friendly option, a scenic float with mostly Class I and II water and one Class III rapid at the end, with good wildlife viewing along the way.
Denali Raft Adventures has been operating on the Nenana since 1974 and is the original outfitter on the river. Multiple daily launches, complimentary hotel shuttle.
- Denali Raft Adventures | Canyon Run & Wilderness Run | May 20–Sept 10 | (907) 683-2234
Minimum weight 50 lbs for all trips. Canyon Run recommended for ages 12+. Wilderness Run suitable for most ages above the weight minimum.
Six Mile Creek — Hope (Class III–V)
Where whitewater rafting in Alaska started for me. Six Mile Creek, nestled in the Chugach National Forest less than 90 minutes from Anchorage, is the most technical commercially guided river in Alaska. Three separate canyons, each one harder than the last — the third canyon is Class V at all water levels. Sheer canyon walls, sharp rocks, few eddies, and 50+ feet of drop per mile. This is not a beginner river.
You finish in the town of Hope. Grab a beer at the local pub, it’s reason enough to make the trip regardless of the rafting.
Two strong operators run Six Mile:
- NOVA Alaska Guides | Three Canyon Run (Class V, ~3hrs) $215 | Two Canyon Run (Class IV, ~2hrs) $139 | (907) 745-5753
- Chugach Outdoor Center | Class IV–V runs | Age 12+ for 2nd canyon, 15+ for 3rd | Check website for current pricing
Kenai River – Cooper Landing
The Kenai River is famous for its turquoise glacial water and incredible salmon runs, my sister and I caught her first salmon here on the same trip we rafted Six Mile. The rafting itself isn’t heart-pounding like the Nenana Canyon, but the scenery is exceptional and it’s the best family-friendly float on the Kenai Peninsula. Good option for anyone who wants to combine fishing and rafting in the same day.
- Alaska Wildland Adventures | 2-hour or full-day trips | Rates vary | (800) 478-4100
Matanuska River — Palmer (Class III–IV)
The Matanuska River runs parallel to its glacier moraine through the Chugach and Talkeetna mountain ranges, the scenery is as good as the whitewater. Primarily Class III and IV rapids on the South Fork, with the glacier visible for much of the run. Accessible from Anchorage in about two hours. Good option for intermediate paddlers who want Denali-level scenery without the Denali drive.
NOVA Alaska Guides runs both Six Mile Creek and the Matanuska and is the original outfitter on both.
- NOVA Alaska Guides | 2–3 hours | ~$139 per person | (907) 745-5753
Lowe River — Valdez (Class III)
Keystone Canyon is Valdez’s only land route to the Alaska interior, and the Lowe River runs right through it. The canyon walls rise sheer on both sides, Bridal Veil Falls drops in from the cliffs, and the Class III rapids give you enough to focus on without being overwhelming. A good option for intermediate paddlers who want dramatic scenery over extreme whitewater.
- Pangaea Adventures | 3 hours | ~$105 per person | (907) 835-8442
Copper River — Copper Center (Class II–IV)
About four hours from Anchorage on the fringes of Wrangell-St. Elias National Park — the largest national park in North America. The Copper River Basin has volcanic peaks approaching 17,000 feet, multiple fish species, and some of the most dramatic scenery in Alaska. I’ve driven through this area more times than I can count heading to McCarthy. It’s legitimately stunning.
- Copper River Guides | 3 hours | $200 per person (2-person minimum) | (907) 960-0069
Other Floatable Rivers Worth Knowing
Mendenhall River (Juneau)
A scenic float through the Mendenhall Valley, popular with cruise ship passengers looking for something more active than a glacier walk. Mild water, good wildlife viewing, easy access from downtown Juneau.
Taiya River (Skagway)
Mellow whitewater near Skagway, sometimes paired with a hike down the Chilkoot Trail. Skagway Float Tours runs guided trips on the Taiya. Good half-day option for cruise passengers with limited time.
Talkeetna River (Talkeetna)
Class I–II scenic float with Denali views and good wildlife sightings. Mellow enough for most ages.
Chulitna River (Talkeetna)
Flows through Denali National Park. Calm water, guides do the work, exceptional scenery.
Chilkat River (Haines)
Little to no whitewater, but runs through North America’s largest concentration of bald eagles. A float, not a thrill ride, but worth it.
Kasilof River (Soldotna)
Known primarily for salmon fishing, but the scenic mellow float is available. Good add-on to a Kenai Peninsula trip.
What to Wear and What to Expect
Alaska’s rivers run cold year-round, the Nenana sits around 36°F even in July. Every reputable outfitter will provide a drysuit, life jacket, helmet, and river shoes.
- Base Layer: You wear your own base layers underneath. The suit keeps you dry; your layers keep you warm. Bring wool or synthetic long underwear.
- Dry bag your phone. Every operator provides a drysuit but not waterproof storage for your valuables. Bring a small dry bag or waterproof phone case, you will get splashed on the face even in a drysuit and you will want photos. Leave your wallet in the car.
- Contacts vs glasses. If you wear contacts, either wear disposables you’re willing to lose or switch to glasses with a strap. Getting flipped and losing a contact in glacial water is a bad day.
- Don’t underestimate the cold. Even in a drysuit, wet hands and face are real in glacial water. Bring gloves.
- Book early for July and August. Nenana Canyon runs and Six Mile Creek fill weeks out during peak season.
- Water levels matter. High water in May–June can close Class V sections or change trip options. Call ahead.
Whitewater Rafting in Alaska Safety Protocols
All commercially guided Alaska rafting operators are required to hold permits and provide guides with whitewater certification. Reputable outfitters provide a full safety briefing before launch, put you in a drysuit, and run safety boats on technical sections. Six Mile Creek specifically uses safety kayakers in the canyons given the technical nature of the water.
If you’re booking independently, not on a guided trip, the cold water is the primary risk. Immersion in 36–40°F water causes rapid incapacitation. Don’t self-guide technical Alaska rivers without appropriate cold-water training and gear.
Whitewater Rafting in Alaska FAQS
What is the best river for whitewater rafting in Alaska?
The Nenana River near Denali is the most popular, with options ranging from family-friendly Class II floats to Class IV canyon runs. For experienced paddlers seeking the most technical water, Six Mile Creek near Hope is the best commercial whitewater in Alaska — Class V in the third canyon.
How cold is the water when rafting in Alaska?
Most glacially-fed rivers in Alaska run around 36°F–45°F year-round. All reputable outfitters provide drysuits. Don’t book with any operator that doesn’t.
When is the best time to go whitewater rafting in Alaska?
July and August offer the best combination of conditions and weather. June has higher water from snowmelt which creates more intense rapids — good for experienced paddlers, potentially too high for some guided trips. Most outfitters close by mid-September.
How much does whitewater rafting in Alaska cost?
Prices typically run $105–$215 per person for a guided half-day trip depending on the river and operator. The Lowe River in Valdez is on the lower end; Six Mile Creek Class V runs are on the higher end. Always book directly with the operator — third-party booking platforms add markup.
Is whitewater rafting in Alaska suitable for beginners?
Yes, with the right river. The Nenana Wilderness Run, Kenai River, and Chilkat River are all good beginner options. The Nenana Canyon Run and Six Mile Creek are not — those are for intermediate to experienced paddlers.
How far is Six Mile Creek from Anchorage?
About 75–90 minutes south on the Seward Highway to the Hope Junction. It’s the closest major whitewater destination to Anchorage.
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