Trains come in many different sizes, so there isn't one single answer to how tall a train is.

Here are some factors that affect a train's height:

* Type of train: Passenger trains, freight trains, and high-speed trains all have different heights.

* Gauge of the track: The distance between the rails affects the height of the train.

* Specific model: Different models within the same type of train can have varying heights.

* Loading: The height of the train can change depending on what is being loaded on it.

Here are some general height ranges for different types of trains:

* Passenger Trains: Around 12-15 feet (3.6-4.6 meters) tall.

* Freight Trains: Typically 14-16 feet (4.3-4.9 meters) tall.

* High-Speed Trains: Can be as tall as 17-20 feet (5.2-6.1 meters).

To get the exact height of a specific train, you would need to consult its specifications.