Shiga Kogen Tourism Association Official Website

National Route R292 Shiga-Kusatsu Kogen Route (from Yosaka to Gunma Pref.)

Shiga-Kusatsu Kogen Route（From Shiga Kogen Yosaka Gate to Kusatsu Tenguyama Gate）　【Temporary Closed】
From Manza Onsen Junction to Kusatsu Tenguyama Gate (black lined in the following map) is temporary closed due to volcanic activity.
For more details please check Nakanojo Doken Office　TEL: 0279-75-3047

Detour Route: Via Manza Highway (toll route) The route is open between Manza Onsen and Shiga Koggen. (Between Joshin'etsu Highway Nakano I.C. and Shibutoge in Shiga Kogen is also open)
*Pedestrians, bicycles, and motorcycles under 125cc are not allowed on the Manza Highway.

【WINTER ROAD CLOSURE】
DATE: From 12 November 2025 at 13:00 to 22 April 2026 at 10:00
LOCATION: From Shiga Kogen Yosaka Gate (Yokoteyama) to Kusatsu Tenguyama Gate

Okushiga Kogen Sakae Line

Prefectural Road R502 (From Okushiga Gate to Akiyama Gate): Following routes are FULLY OPEN as of 1 July 2025.

【WINTER ROAD CLOSURE】
DATE: From 10 November 2025 at 10:00 to 15 May 2026 at 14:00
LOCATION: From Okushiga Gate (Okushiga Kogen) to Nozawa Onsen Village (Incl. Kayano-daira and Akiyamago Village)

Toyonominami Shiga Koen Line

Prefectural Road R66 (From Kasagadake to Yamada Onsen / Takayamamura) is FULLY OPEN as of 1 July 2025.

【WINTER ROAD CLOSURE】
DATE: From 7 November 2025 at 15:00 to 22 May 2026 at 15:00
LOCATION: From Shiga Kogen Kasagatake Gate to Takayama Village (Yamada Onsen)

Updated: 22 October 2025