Traveling from Duisburg to Stuttgart offers various train services, including the high-speed ICE trains, regional RE services, and Intercity trains. The ICE trains provide a swift and comfortable journey, taking approximately 3 hours with amenities such as Wi-Fi and dining options. On the other hand, the RE services, while slower, offer a more budget-friendly option and allow for scenic views of the German countryside. Intercity trains strike a balance between speed and comfort, making them an ideal choice for travelers looking for a convenient yet affordable journey.