Usually, the Endurance races will add enough XP to level you up. If your driver is in good condition and he wins, you'll most likely expect to level up to 35.
Not allways, it depends on what your Login bonus is. 200% yes you could go up as your prize will be 1.9Mill Exp but at 110% no you won't... it will require another race...
Level chart incase you need it again OP...
Usually I Hit the right Qoute button dont know why it was your 2 line reply, was not there when I went looking for the link and photo.
Did not even see your reply.
Look at the grid above each driver has to earn that amount to also go up in level.
1 B-spec win online won't make a dent... you need to run 4 or 9 or 24 hour races.
Or B-spec seasonals.