A second half Noah Van Geenan double helped Dario Castelo's side claim a valuable three points.
Athlone Town romped to their biggest midlands derby win in years last time out in the League of Ireland First Division.
Aaron Connolly, a Bastian Hery own-goal, and a Noah van Geenan double left Athlone 4-0 up against Longford Town after 70 minutes.
The league's bottom side scored a consolation through Jordan Adeyemo ten minutes later before Mohammed Boudiaf picked up a quickfire double yellow card to reduce Longford to 10 men for the final moments.
All the goals and highlights from the 4 - 1 win over Longford Town on Friday evening.
— Athlone Town AFC (@AthloneTownAFC) July 13, 2024
45'+1 Aaron Connolly - ATAFC
65' Bastien Hery(OG) - LTFC
67' Noah Van Geenen - ATAFC
74' Noah Van Geenen - ATAFC
80' Jordan Adeyemo - LTFC #PrideOfTheMidlandshttps://t.co/oMFCSf9GgI
That result sees Dario Castelo's side retain second place in the standings, three points clear with a game in hand over UCD who were held to a 1-1 draw against Treaty United.
It's Athlone's biggest win over Longford since beating the Bishopsgate Street outfit 3-0 in a cup contest in 2011.
Elsewhere, league leaders Cork City beat Finn Harps 1-0, Kerry and Bray played out a 3-3 thriller, and Wexford were 3-0 winners over Cobh Ramblers.
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