The length of a marriage dress train is really a matter of personal preference and may vary based on the style of the dress and the formality of the wedding. There are various different train lengths to take into account:
Sweep Train: This can be the shortest train length, usually extending 6 inches (15 cm) or less from the trunk of the dress. It adds a subtle touch of elegance without having to be too cumbersome, making it suitable for outdoor or less formal weddings.
Court Train: A court train extends approximately 12 to 18 inches (30 to 45 cm) from the waistline of the dress. It includes a graceful look and is frequently seen in semi-formal or formal wedding dresses.
Chapel Train: A chapel train is longer, typically which range from one to two 2 feet (30 to 60 cm) from the waistline. It creates a dramatic effect while still being manageable. Chapel trains are popular in traditional and classic wedding dresses.
Cathedral Train: This train length is more extravagant and extends around 3 to 6 feet (90 to 180 cm) from the waistline, trailing elegantly behind the bride. Cathedral trains tend to be seen in formal or grand weddings, as they create a stunning statement.

Click to find out more or Monarch Train: The longest train length, a royal or monarch train, extends over 6 feet (180 cm) or more from the waistline. This type of train is exceptionally grand and is usually reserved for very formal or royal weddings.
When choosing the train length for the wedding dress, consider factors such as the venue, the overall design of your wedding, and your personal comfort. It is important to ensure that the train doesn't hinder your movement or cause any inconvenience through the ceremony or reception. Alterations can even be made to adjust the train length based on your requirements and practicality.