From the 16-17saver website:
From 2 September 2019, a 16-17 Saver gets you 50% off most rail fares every day of the year with
no time restrictions and no minimum fare.
The 16-17 Saver is valid for one year or until your 18th birthday, whichever comes first.
If you buy a discounted Season ticket before the expiry of your 16-17 Saver, you can continue to use this Season ticket for up to 4 months after expiry.
...
Your 16-17 Saver
WON▸ ’T apply to:
- Tickets for travel on ScotRail services
- Tickets for travel on Caledonian Sleeper services
If you live in Scotland, check out the Young Scot card for discounts on rail fares.
So looking at the Young Scot card:
If you are 16, 17 or 18 years old, your Young Scot NEC» allows you to buy rail tickets for travel within Scotland at discounted prices.
You can get:
•One third off most single or return rail fares.
•50 % off all weekly or monthly tickets.
•One third off most advance purchases.
The Young Scot train discount is valid on Scotrail, LNER» , Virgin Train, Cross Country and First Transpenine services where the entirety of the journey is within Scotland.
There is a minimum spend if you want to travel before 10am on a weekday. Anytime and Anytime Day Single and Returns, Off-Peak, Off-Peak Day and Super Off-Peak Single and Return fares are all discounted with a £12.00 minimum fare.
Recommendations for a 17-year old travelling from Dumfries to Carlisle?