The railway is encouraging all guests to get into the spirit and throw their best 1970s glad rags on.
Popular rock band The Glamned will be performing at Levisham Station while at Pickering and Goathland Stations there will be a 70s pop-up museum and 70s display vehicles.
The event will also see the arrival of an array of different engines that are sure to grab the attention of railway enthusiasts.
Chris Price, general manager at North Yorkshire Moors Railway, said: “We are extremely excited to be hosting two great events across one weekend. Fancy dress always makes for a good event, especially the 1970s clothes.”
For further information or to pre-book tickets online before your visit please go to www.nymr.co.uk/timetables-and-fares/fares/.