The number of UK train journeys made last year rose 3.8%, according to the Rail Delivery Group (RDG).
The organisation that represents train operators and Network Rail said there were 1.7 billion journeys made by rail in the UK between 4 January 2015 and 9 January 2016.
That was 62 million more than in the previous year.
The RDG said that cheaper tickets sold in advance and off-peak tickets had grown particularly strongly.
But even so, sales in cash terms rose by 6% to £9.4bn.
Regulated train fares were allowed to rise by 2.5% in 2015.
Source: BBC