Regular readers will know that I have been off to some distant places by train using an Interrail pass over recent months.  The Interrail folks are having a flash sale - 20% off - of these tickets until 9th September, for travel starting within 11 months from the date of purchase. https://www.interrail.eu/en/interrail-passes/global-pass

If you want to travel extensively by train in Europe (outside Great Britain) over the winter and spring, these tickets are worth considering.  Remember that you'll also need to pay other costs - this is a train ticket only and hotels / hostels / food / tourist things / mobile phone roaming  / local metros will dwarf the rail cost.  Also remember that these prices do not include seat reservations and some supplements on trains. If you are travelling on almost all local and regional trains, and some long distance too, you can ride without these surcharges or without rebooking.

In past years, there has been a 25% "Black Friday" sale at the end of November too - that is not guaranteed. I am personally looking at the current offer and, though I am not a great sales purchaser, tempted ... Spring trip Melksham to Samsun perhaps?