Extreme-level Challenges, MUKAWA 135 Bike, Raft & Paddle 4 days
2026
Last updated : 2026
The Mukawa River journey from the river source to the mouth by bike, raft, and paddle—where water, nature, and community connect
This is not a typical tour itinerary; it is a multi-sport odyssey that demands a spirit of adventure, combining mountain biking, whitewater rafting, and wilderness kayaking into one seamless narrative of the Mukawa River. We move with the current, transitioning through changing landscapes, from rugged mountain gorges to the expansive river mouth, immersing ourselves in the raw, elemental beauty of Hokkaido.
The journey ignites at the river’s source near Tomamu. On Day 1, we mount our bikes to shadow the infant river as it gathers strength. The ride is a 50km descent through ancient forests and dramatic geological formations, including the striking Akaiwa Seigankyo Gorge.
On Day 2, the pace quickens as we swap wheels for paddles. We tackle a 15km stretch of whitewater by raft, navigating the river’s energy before settling into a community-style evening where guests participate in preparing a dinner—a moment of true camaraderie.
The final two days are dedicated to the soulful rhythm of kayaking. We embark on a two-day, 30km paddle that leads us toward the coast. This is a true wilderness experience, featuring a night of riverside camping under the stars. We carry our momentum through forested valleys and quiet bends, finally reaching the river mouth where the fresh water meets the sea. This expedition is a celebration of movement, local flavors—from wild venison curry to riverside bento—and the deep satisfaction of completing a continuous line from the mountains to the ocean.
ATWS members enjoyed “MUKAWA 135” in 2023
Itinerary:
Meet at Tomamu for a private transfer to the mountain headwaters. We begin our 50km descent, starting with a 5km gravel section that tests your handling before transitioning to winding paved roads. After a rugged lunch of local venison curry, we ride through the stunning Akaiwa Seigankyo Gorge. The day concludes with a restorative soak at Yunosawa Onsen to prepare for the water ahead.
Overnight in Yunosawa onsen
We transition from land to water at Fukuyama. Over 15km of rafting, we feel the river’s power firsthand, stopping for a gourmet bagel lunch on the riverbank. The evening is spent at the Tomiuchi Ikigai Center, where we engage in a “guest-participation” dinner—sharing the craft of making gyoza etc. together as a team.
Overnight in Tomiuchi
The kayaking phase begins with an unhurried 15km paddle toward Toyoda Bridge. We enjoy handmade onigiri on the banks, fully immersing ourselves in the river’s pace. As the sun sets, we set up camp for a night in the wild. After a quick transfer to Jukai Onsen for a refreshing shower, we return to the campsite for a celebratory BBQ under the Hokkaido sky.
Camping night
The River Mouth Our final morning starts with hot sandwiches at the campsite before we paddle the last 14km toward the coast. We arrive at the river mouth by noon, witnessing the powerful meeting of river and sea. After a farewell lunch at a local restaurant, we transfer to New Chitose Airport, marking the end of our source-to-sea transformation.
