Onsen Dojo Co., Ltd. (Tokigawa-machi, Hiki-gun, Saitama Prefecture, Representative Director: Toshiaki Yamazaki), which operates "COMORIVER" (Tokigawa-machi, Hiki-gun, Saitama Prefecture, hereinafter "COMORIVER"), will hold "COMORIVER SAUNA FES 2026 Summer," an outdoor sauna event themed "Clear Stream x Sauna," for three days only from Saturday, July 18 to Monday, July 20, 2026.

COMORIVER is a small resort facility with 12 rooms, overlooking the first-class Tokigawa river. The facility features permanent private saunas, including an Estonian "Iglu Sauna" and a "Sauna Mokki" recreating a Finnish sauna hut. The public sauna area "moku" for communal use is equipped with "ASEMA," a sauna trailer with a wood-fired stove, a rare "Sauna Wagon" converted from a minivan, and an "Iglu Sauna," along with two types and three temperature zones of cold baths.

We have prepared seven contents that can only be experienced thanks to the four types of saunas and COMORIVER's unique location.

<COMORIVER SAUNA FES 2026 Summer: 7 Contents>

① Riverbed Slider A slider located on the banks of the exceptionally clear first-class Tokigawa river. This is the most popular content among past participants. Please experience the ultimate cool-down that only COMORIVER can offer.

② Relaxation Space on the River Relax in the midst of nature on chairs arranged on the clear stream, feeling the river on your skin and hearing its sounds.

③ Yuzu Curry & Yuzu Jam Yuzu curry made with yuzu grown in Tokigawa-machi and baguettes from "Komugi no Dorei," a bakery located within COMORIVER, will be served as a set. Enjoy the aroma of yuzu and spicy curry with yuzu jam to your liking. *Not all-you-can-eat.

④ Homemade Smoked Makkara & Smoked Nuts "Makkara," a popular Nordic sauna food, and nuts perfect for a light snack, will be served homemade smoked. Enjoy the unique combination of "sauna x smoked food" that is hard to find elsewhere. *Not all-you-can-eat.

⑤ COMORIVER Special Herb Detox Water Sauna fes limited herb detox water, carefully selected for post-sauna mind and body. Enjoy a refreshing and easy-to-drink blend with a pleasant herbal aroma.

⑥ Aroma Löyly Blind Test Event Participants will be asked to identify the scent of aroma oil in the buckets used by staff for löyly.

⑦ Free Admission Ticket to Showa Retro Onsen Sento Tamagawa Onsen A natural hot spring boasting a strong alkaline pH of 10, with a smooth texture. After the sauna, relax in the hot spring to finish your day.

<COMORIVER SAUNA FES 2026 Summer>

Dates: Saturday, July 18, Sunday, July 19, Monday, July 20, 2026 Time: Group A 12:00〜16:00, Group B 13:00〜17:00 Venue: COMORIVER 930-1 Hongo, Tokigawa-machi, Hiki-gun, Saitama Prefecture https://comoriver.com/ Capacity: 40 people per day (20 people per group) Regular Price: 6,980 yen (tax included) Ticket Purchase: Please purchase from the URL below. https://comoriver.thebase.in/

Early Bird Tickets Now On Sale If you purchase one month in advance, you save 1,000 yen on the participation fee! Sales Period: Until Wednesday, June 17, 2026 Discount Price: 5,980 yen (tax included) Ticket Purchase: Please purchase from the URL below. https://comoriver.thebase.in/ *The event may be canceled due to severe weather.

COMORIVER An outdoor resort with 12 rooms located along the beautiful clear stream of the Tokigawa river. Based on the concept of "natural moments," it offers various activities such as glamping, BBQ, and outdoor saunas. https://comoriver.com/

ONDO Holdings Co., Ltd. Under the umbrella of Onsen Dojo Co., Ltd., Kii company Co., Ltd., Sakanato Co., Ltd., and Saitama Musashi Heat Bears Co., Ltd., we are engaged in activities aimed at creating new value to "energize regions," contributing to regional revitalization, and developing human resources. https://ondoholdings.com/

FACT BOX

  • Source: PR TIMES
  • Category: Event
  • Organizations: COMORIVER