Four round trips will be complete with carol singers and elves.
Good boys and girls from across the midlands will have the opportunity to ride the Christmas Express with Santa and Mrs Claus.
The trains will depart from Mullingar station to Longford and back, two on Saturday and another two on Sunday.
Passengers will be treated to hot chocolate on the platform and entertainment from carol singers, face-painters, and even a few elves.
Each train will also have a sensory-friendly carriage for a quieter experience for anyone with sensory issues.
Group leader with the Milltownpass 9th Westmeath Scout Group, and a worker with Irish Rail, Fiona O' Shea says a team of volunteers and support from Irish Rail have made the event possible:
New Road Safety Campaign For Midlands Summer Events
Former Laois-Offaly Garda Sergeant Joins Muintir Na Tíre
Laois Accused Told Gardaí He Hit Deer After Fatal Collision
Midlands Landscaper Granted Bail In Drug Case
Laois Leisure Centre Calls Gardaí Over Group's "Disgraceful Behaviour"
El Nino Officially Begins
Renewable Energy Generation In Offaly Needs To Be Honoured In New Targets - Tony McCormack
Longford -Westmeath TD Calls For Government Energy Credits To Be Brought Forward
Recruitment Underway For New Normal Store In Westmeath
Enoch Burke To Face Teaching Council Inquiry
Offaly TD Demands Local Authorities Be Afforded Stronger Powers To Tackle Anti Social Behaviour
Investigation Still Underway Into Irish Produced Alumina
Listen: Offaly Band JigJam Take On Nashville
Midlands School Celebrates Raising €5k Through Charity Initative
Offaly Sinn Fein Councillor Elected As Edenderry Cathaoirleach
Developers Have "Raw Materials" To Deliver Laois Housing - County Council Chief
Westmeath Woman Wins Through To Miss Universe Ireland Finals
Over €8.5m Worth Of Derelict Property In Laois
Westmeath Man Who Made Threats To Taoiseach And Tanaiste Walks Free From Court
Midlands Hospice Foundations Kick Off Sunflower Days Campaign