Yes, Osaka is one of the most popular and easiest day trips to take from Kyoto, thanks to the incredibly efficient Japanese rail system. The two cities are separated by only about 30 to 50 kilometers, and travel time varies between 13 and 45 minutes depending on the train. For the fastest route, the Shinkansen (Bullet Train) takes just 13 minutes from Kyoto Station to Shin-Osaka Station, though this is often less practical as Shin-Osaka is north of the main city center. Most travelers prefer the JR Special Rapid Service, which takes about 30 minutes to reach Osaka Station (Umeda) and is covered by the JR Pass. Alternatively, the private Hankyu or Keihan lines offer direct access to different parts of Osaka, such as Namba or the Gion district, for a very low cost. Because Osaka is a massive "foodie" and nightlife destination, a common strategy is to spend the day exploring Kyoto's temples and then take the short train ride to Osaka in the evening to enjoy the vibrant neon lights and street food of Dotonbori before heading back to Kyoto for the night.