THE Mariners are priced at 5/1 with our betting partner Sky Bet to earn back-to-back promotions and go up to League One next season.
Last season's Play-Off semi-finalists Accrington Stanley and beaten finalists Wycombe Wanderers are also a 5/1 bet.
Portsmouth are the favourites to go up at 10/11, while Doncaster are priced at 11/8, and Leyton Orient and Luton Town are 2/1.
If you're feeling really confident, you can get Town at 22/1 to go up to League One as champions!
Crawley are the favourites for relegation to the National League at 3/1, followed by Newport at 100/30 and Morecambe at 7/2.
Don't forget - Choose Sky Bet and they will give a share of the revenue back to Grimsby Town.
Click here to choose our betting partner, Sky Bet.