Yes of course you can use the pass on these trains but keep in mind that there are expensive mandatory reservations on those high-speed trains. These can sell out days in advance.

Thalys : 32€ (+2€ booking fee) per person

TGV Paris - Barcelona : 35€ (+2€) per person

Regular tickets a long time in advance might be cheaper.

You can have a look at alternative routes, for example :

- Mannheim - Paris-Est 17€ (+2€)

- Paris Gare de Lyon - Perpignan TGV 10-20€ (+2€)

- Perpignan - Portbou TER reservation-free

- Portbou - Barcelona Cercanias reservation-free

Unfortunately, DB does not sell TGV reservations anymore, except for the TGV Germany-France.

I stand corrected

Thank you both for the quick reply 

we have already made the journey that I stated but was not aware of the this pass 

It is also with just one transfer Paris Nord to Paris Garde de Lyon wich is about 15 min on the Metro

Thank you again for the information 

Regards 

Yes maybe the pass + reservations might be cheaper than regular tickets but I'm not sure.

At least you get 2 more travel days to use :)