Rail Plus is offering an extra day's travel for free to clients who pay for a six-, eight- or 10-day Eurail Select Pass before 28 May 2012.

A Eurail Select Pass allows travellers to explore three, four or five adjoining European countries*. Passes offer unlimited travel and are valid for a choice of five, six, eight, 10 or 15 days within a two month period (days do not need to be consecutive).

The new 'Eurail Select Pass - Free Day Promotion’ means, for instance, that any traveller booking a six-day pass (priced from $433 Adult Saver**) will now enjoy seven days' travel for no extra cost.

To qualify for the Free-Day deal, all bookings must be paid and ticketed by 3pm Monday 28 May 2012 (passes are issued open dated but must be validated within six months of issue).