There were celebrations following the final whistle at Avantcard Páirc Seán Mac Diarmada on Sunday afternoon.
Leitrim's 1-9 to 0-7 win against London secured the home side's promotion to Division 3 of the Allianz Football League. It was their fifth win from five games under Terry Hyland in Division 4.
Leitrim will play in the Division 4 final against Derry at Croke Park on March 30th.
Sportsfile's Oliver McVeigh was in Carrick-On-Shannon to capture the action and Leitrim's elation following the game.
Shane Quinn of Leitrim scoring his side's goal
Damien Moran and Shane Quinn
Paddy Maguire of Leitrim celebrates along with Leitrim manager Terry Hyland
Dean McGovern, Shane Quinn and Emlyn Mulligan