Traveling from Mainz to Berlin offers several train services, with options like the high-speed ICE and the regional RE trains. The ICE service provides a swift and comfortable journey, connecting Mainz to Berlin in just about four hours, making it ideal for travelers looking to minimize travel time. On the other hand, the RE trains are a more economical choice, taking approximately six hours, perfect for budget-conscious travelers who appreciate scenic routes and a chance to relax during the trip. Each option caters to different preferences, ensuring that whether you're in a rush or enjoying the journey, there's a train service that suits your needs.