Packrafting the Upper Sibun River: Jungle Whitewater in Belize's Maya Mountains.
- Tim Kelley
- 7 days ago
- 7 min read
Why Sibun?: As a coastal country in Central America, Belize is better known for its barrier islands, sand beaches, and aquamarine Caribbean coastline than its rivers. While its small area and limited gradient mean that Belize may never be a prominent whitewater destination, the Sibun is a hidden gem tucked away in the Maya Mountains. While the lower Sibun is a well-known, road-accessed float popular with paddleboarders and canoeists, the remote upper section is lesser known. Since it was first paddled from its headwaters via helicopter, a handful of private and commercial groups have returned to this section on foot by way of a steep and lush descent through the jungle. Given the tricky access and low-volume character, the Sibun is a great option for packrafters who don't mind a strenuous hike in exchange for moderate granite bouldergardens in a pristine jungle setting.
Water Levels/Difficulty: Like all jungle rivers, the Sibun's levels can fluctuate rapidly. Given the flash-flood potential, it is best to target the Sibun after the rainy season, which runs from May to November. December through February is a cooler transitional season with mixed weather before the dry season begins in March, and the rivers get really low. We opted for a late January trip to miss the heaviest rain but beat the heat. While we did get a big rainstorm two days before our trip, accessing the Sibun near its headwaters means you'll be paddling a low-volume creek in most conditions. While targeting higher levels might sound appealing, any heavy rain would make the road access at Baldy Beacon impassable, and the hike a nightmare. Expect to have low but boatable flows that channelize well and become more enjoyable after the confluence of several tributaries. At normal flows, this run is primarily class III and pool-drop in character. There are some class IV-IV+ rapids interspersed throughout, but they offer scout and portage options at river level.
ROUTE OVERVIEW
The Hike: The hike into the Sibun begins in the Mountain Pine Forest Reserve within the Maya Mountains. While the 1,000m crest of the reserve may not sound very high, it is enough to create a cooler microclimate, with Caribbean Pine forests comprising over 50% of the park. From the end of the drivable dirt road, the descent begins by following an old road grade through open meadows with sweeping views of the surrounding mountains and Sibun Valley. Eventually, the road ends, marking the start of the steep descent into the forest. While there is no established trail at this time, there is a general area where hired "choppers" have macheteed a rough route to the river. Because the jungle is so quick to reclaim this route and because the river receives so little traffic, marking the route's precise location on a map would be unreliable. From where we entered the jungle, the descent is equal parts balancing on slick rocks, controlled butt slides down muddy slopes, and self-belays with tree branches (after confirming they are not snakes). The descent is quite steep, with some sections of exposure. Given the descent route may vary, some groups have reported setting up rappels or fixing handlines. Despite being only around 2.5 miles in length, the descent took us 7 hours. While the hike is an undertaking, starting amongst ridge-top pine forest and then ending the day along a lush jungle stream was a truly unique experience and one of the highlights of the trip.
The River:
Upstream of Hike Access:
Given the effort required to access the run, we opted to spend two nights at our first camp to allow for a full day of upstream exploration. The low-volume, pool-drop character of the river makes it easy to attain and portage your way upstream with empty boats. While this day was as much about swimming, looking for wildlife, and taking in the jungle scenery, we also enjoyed some fun whitewater on the way back to camp. The line on the embedded map accurately reflects the extent of our upstream travel. While there is certainly stunning scenery further upstream, you should expect more of a boat-assisted canyoneering experience than consistent paddling above this point. We turned around at the top of a well-channelized bedrock mini-gorge not far beyond the confluence of a significant tributary.
Downstream of Hike Access:
Downstream from the access point, the river continues through small boulder gardens and tight shoots that require some "bumper-boating" until a major tributary enters from river right, doubling the flow. It's worth paddling up this tributary a short distance to check out a waterfall hemmed in by impressive canyon walls. Below this tributary, the whitewater picks up. There are a wide variety of drops that include low-angle slides, short flumes, ledges, and granite boulder gardens. While we imagined this trip would be more about the jungle adventure and wildlife, we were surprised by how much we enjoyed the whitewater. The most consistent and fun section lies between what I have marked as the "second confluence" and "3rd Camp." There are some more rapids on the final day, but the run tapers to class II and finally flatwater floating as it approaches the takeout at the Hummingbird Highway.
Jungle Camping:
While tent camping on gravel bars is possible at low flows, it isn't advisable due to the risk of flash flooding. It's ideal to be able to retreat to the jungle if levels rise, and there are very few flat and open places that could accommodate a tent. Hammock camping is the easy solution, as it lets you spend the night almost anywhere while keeping you off the ground, where all sorts of critters hang out. You'll want to have a bug net and a tarp as part of your system. This area around the Sibun is incredibly biodiverse, offering the chance to see tapirs, jaguars, monkeys, and a wide variety of bird species. Fishing with a hand line proved to be an easy way to supplement our rations.
LOGISTICS:
While I enjoy organizing the logistics of each of our trips, during my research of paddling in Belize, it seemed that there were enough legal requirements and logistical hurdles to river access that we should seek some local help. We connected with Ajinder Garcha at SeaKunga, who had previously guided trips on the Sibun as well as other rivers in Belize, such as the Moho, Caves Branch, and the Swasey Branch (Monkey River). He joined us on a two-day trip down the Moho and was instrumental in securing access, permits, and a guide for the Sibun.
Guide Requirement: Belize requires that a guide accompany visitors on overnight trips within the National Parks. If he is available, I'd recommend going with Ajinder, given his previous experience on the Sibun and his familiarity with packrafting. While Ajinder was unable to join us, he helped set us up with another guide from a nearby community. Our guide had fantastic knowledge of bushcraft and local flora and fauna, but relatively limited whitewater experience due simply to Belize's limited opportunities for practice. As a group of advanced paddlers and professional instructors, we appreciated the exchange of our guide offering incredible natural history interpretation and jungle camping knowledge while we provided paddling tips and portaging recommendations. All of this is to say it's worth being transparent about your paddling skill level when organizing the trip. Given that we were seeking a guide to meet the legal requirement and provide interpretive knowledge, this arrangement worked great for us. If you are also seeking a guide who can show you down the river and provide on-water safety, you'll want Ajinder. We appreciated traveling with an extra packraft that we used to outfit our guide. While SeaKunga has a fleet of inflatable kayaks, at half the weight and bulk and with internal storage, the packraft seems like a better craft for the Sibun, especially given the strenuous access.
Permit: A permit is required for overnight access to the park. Typically, this is done at the forestry department in the capital of Belmopan. Given the slow pace of local bureaucracy, Ajinder stopped in with our documentation weeks in advance of our visit to ensure we got permits without a hitch. Unless you have extended time and flexibility while in the country, having local support felt critical to navigate this process.
Baldy Beacon Road: The start of the descent to the Sibun begins on a high ridgeline at the end of a long dirt road. While road conditions seem to vary seasonally, the day after a big rainstorm, the road was a white-knuckle experience that required lifted, four-wheel drive. While our drivers reported they made the drive in a two-wheel drive vehicle the week prior, this seemed more indicative of their driving skill and risk tolerance than of the road's typical condition.
Take-out: The Upper Sibun ends where the Hummingbird Highway crosses the river. Conveniently, the takeout is served by regular bus service headed either south to the coast or north to Belmopan and connections to Belize City.
OTHER BELIZE PADDLING
While the Sibun is a fantastic adventure, it's only 3-4 days. If you're already in country with your packrafting gear, it's worth checking out some of Belize's other novelty whitewater. The Mayan Whitewater guidebook that covers Chiapas and Belize helped us hone in on some other options.
The Moho: Before heading to the Sibun, we paddled the Moho River in southern Belize. With countless travertine drops from 5-20 feet in height, the Moho's opaque, turquoise waters stair-step their way through the jungle in a spectacular fashion. While many of the horizon lines are intimidating, the boating itself is quite forgiving, with most of the rapids requiring just a boof before ending in a tranquil pool. Packrafting over travertine does have a bit of a learning curve. The grippy nature of the rock wants to grab the hull of the packraft and send paddlers "over the handlebars" if they don't find the deep channel or effectively time their stroke. While tall, most of the drops don't require more than a class III+ move, and all of them are easily portageable. There are a couple of great camping spots along the river, and it's worth doing the Moho as a two-day trip. Ajider at Seakunga frequently runs commercial trips on this section with IKs. He accompanied us on the trip and has local connections in the nearby Maya village of Blue Creek that made the shuttle and camping logistics simple.
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