The journey from Ueno to Kagaonsen is served primarily by the Limited Express Train known as the Takasaki Line, which typically operates at speeds ranging from 110 km/h to 120 km/h (68 mph to 75 mph). This train connects travelers from Ueno station to Kagaonsen, offering direct service with a travel time of approximately 4 hours. Along the way, the train makes strategic stops at various stations, allowing passengers to enjoy views of the Japanese countryside. While not a high-speed service, the Limited Express Train is efficient and provides a comfortable experience for its passengers. For those looking for alternative routes, transferring to a local train at Takasaki might offer further travel options, though this would extend the journey time. Additionally, onboard amenities include standard seating, vending machines, and restrooms, ensuring a suitable level of comfort throughout the trip. The Takasaki Line train is best for passengers prioritizing a direct route to Kagaonsen.