All 16 Asama services stop at Tokyo, Ueno, Ōmiya, Takasaki, Karuizawa, Sakudaira, Ueda, and Nagano.

[4] Services were initially operated using a dedicated fleet of fourteen 8-car E2 series "N" sets based at Nagano Shinkansen Depot.

New E7 series 12-car sets, also based at Nagano Depot, were introduced on Asama services from the start of the revised timetable on 15 March 2014.

[5] JR West W7 series 12-car sets, based at Hakusan Depot, were introduced from the start of the revised timetable on 14 March 2015.

[2] After a gap of three years, the name Asama was re-introduced from 1 October 1966 on the Limited express services operating between Ueno and Nagano or Naoetsu.

[1] During the 1998 Winter Olympics in February 1998, additional services were provided using one specially modified 200 series train (set F80), limited to a maximum speed of 210 km/h.

[6] Four E4 series double-decker "Max" trains (sets P51/52 and P81/82) were also specially built for seasonal use on the Nagano Shinkansen as Max Asama services, but only two (sets P81 and P82) are capable of travelling as far as Nagano because the line west of Karuizawa runs on a 60 Hz power supply, unlike the rest of the line that runs on a 50 Hz power supply.