We are a small Outdoor Adventure Company situated in the beautiful area of Minakami (hot spring) Town in the famous Gunma Prefecture of Japan.
We offer both White Water Rafting and Canyoning Tours in summer and Backcountry Skiing/Snowboarding in the winter.

We pride ourselves in our Relaxed and very privatized tours where our customers can experience the full quality of  “The Outdoors” in Japan’s most popular Outdoor Adventure Tourism destination, Minakami-machi. Only 2 hours from Tokyo!

With only 2 tours a day and limited seats available, we guarantee a relaxed、laid back atmosphere with plenty of time on the tours to enjoy Japan`s wonderful outdoor life!
Come rafting down the mighty Tonegawa River, renowned for its world class rapids and breathtaking scenery or come jump off one of the many pristine waterfalls our Canyoning course`s have to offer…

Come and relax, recharge and refresh with H2O!!

What is Rafting?

H2O Guide Service offers rafting tours down the famous Tonegawa River. No experience needed.
Rafting involves lots of rubber, water and fun. Travel down the river with an experienced guide, and as a team, navigate the world class rapids of the Tonegawa River on a rubber boat.
All of our guides are fluent in English and have been in the Adventure Tourism industry for more than 10 years.
With spring in Japan comes snow-melt from the Alps which in turn provide us with exhilarating “High-Water flows”. The best time for rafting is spring.
As summer comes around the High-Water flows decrease and we offer “summer rafting” which involves lots of swimming and jumping and is a perfect way to beat the summer heat!
H2O Guide service offers Half-day rafting and One-day rafting tours.

Half Day Rafting Tour

The half-day tour has a wide range of courses which is dependant on the river flow at that time.
Tours are run twice daily with starting times at 9am and 1pm.
Tour time is approx. 3-4hours with around 1hour and a half on the boat.

One Day Rafting Tour

The One-day tour offers a full day of rafting which also includes lunch.
Tour time starts at 9am and will usually finish around 4pm.
*The One-day tour can only be done in the month of May due to Spring, High-water flows on the river.

* High-Water Rafting April-June
* Summer Rafting July-October
* One day Rafting tour MAY only.

Tour Price

Half Day Rafting Tour 8500yen per person.
One Day Rafting Tour 13000yen per person (includes lunch)
Children under 13yrs 6000yen per child (half day tour only)
*High Water Rafting requires a minimum age of 13yrs. In summer due to lower water flows the minimum age for summer rafting is 8yrs. This can change due to bad weather and/or sudden rise in water levels.
*All you need to bring is swimwear and a smile.
If you have any medical conditions, disabilities or allergies please inform H2O staff when booking the tour.
Tour price includes all taxes/fees and all rafting wetsuits, wet boots, safety gear, professional guide, transport to/from river, hot showers with towel and complimentary tea/coffee at end of the tour.
Photos taken on the tour by H2O Guide Service are FREE, compliments of us here at H2O…


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