City Thameslink is a central London railway station within the City of London, with entrances on Ludgate Hill and Holborn Viaduct. The station is on the Thameslink route between Blackfriars to the south and Farringdon to the north.

No, City Thameslink and London Blackfriars are two separate, distinct railway stations, although they are located only about 500 meters apart on the same Thameslink line. London Blackfriars is a major hub that spans the River Thames, with entrances on both the North and South banks, and provides connections to the London Underground (District and Circle lines). City Thameslink, located just to the north on Ludgate Hill, is an underground-only station that is closed on weekends. They are close enough that if you accidentally get off at one, you can walk to the other in about 5–7 minutes. In 2026, commuters often use City Thameslink for the "City" financial district, while Blackfriars is the preferred stop for those heading to the South Bank (Tate Modern) or transferring to the Tube.