Motegi Town is around 2.5-3 hours from Tokyo. It's famous for the international racing circuit (formerly Twin Ring Motegi) and the Mitsumata Flowers, but Motegi also has so much more!
Kinugawa Onsen and Kawaji Onsen are popular onsen (hot spring) areas 2hours from Tokyo. Why not relax in a hot spring at one of the many Ryokans with hot springs?
Nakagawa Town is a cozy riverside town 2.5hours north of Tokyo with a ukiyo-e museum, pottery culture (Koisago-yaki), an onsen, and Iizuka-tei hotel. It's a great place to experience the Japanese countryside.
Nasu-Karasuyama City is a small city in Tochigi prefecture known for the Yamaage festival and Ryumon Falls as well as Washi paper and its award-winning cave sake brewery.