It was named Super Sōya (スーパー宗谷) between 2000 and 2017.

There is only one single daily return working per direction, with an average journey time between Sapporo and Wakkanai lasting approximately 5 hours 10 minutes.

Trains operate at a maximum speed of 120 kilometers per hour (75 mph).

[2] The service calls at the following stations: Sapporo – Iwamizawa – (Bibai) – (Sunagawa) – Takikawa – Fukagawa – Asahikawa – Wassamu – Shibetsu – Nayoro – Bifuka – Otoineppu – Teshio-Nakagawa – Horonobe – Toyotomi – Minami-Wakkanai – Wakkanai The stations in the () are only served by the northbound service.

Services are normally formed of 4-car KiHa 261 series DMUs, which were introduced from the start of services on 11 March 2000, with car 1 at the Wakkanai end.