Wrexham will play at Wembley for the first time in the club's history, after seeing off a tough test from Gainsborough in their FA Trophy semi-final.
The Welsh side endured seven nail-biting minutes of injury time, trailing 2-1 in this afternoon's second leg, but ahead 4-3 on aggregate, before the full-time whistle blew.
They will play Grimsby in the final on 24 March.
Wrexham are through to the final of the FA Trophy.
They lost 2-1 at Gainsborough, but won their semi-final 4-3 on aggregate to book a place at Wembley next month.
Danny Wright got Wrexham's goal this afternoon.
Wrexham face Gainsborough Trinity in the second leg of their FA Carlsberg Trophy semi-final this afternoon, knowing they are in pole position and just 90 minutes away from Wembley.
Andy Morrell's side won 3-1 in the first leg at the Racecourse last Saturday, with goals from Danny Wright, Adrian Cieslewicz and Neil Ashton.
Wrexham are 12 games unbeaten, and also top of the Blue Square Bet Premier.
Gainsborough are in the running for promotion from the Conference North, one division below.