The Calder Valley Line is a railway route in northern England that connects the cities of Leeds and Manchester. It runs through the scenic Calder Valley, offering picturesque views of the surrounding countryside. The line serves several towns, including Halifax and Brighouse, and is an important commuter route for residents in the area. Operated by Northern Trains, the Calder Valley Line provides regular services, making it a vital link for both passengers and freight. The line is part of the wider National Rail network, contributing to regional connectivity and supporting local economies along its route.