Malin to Mizen (or Mizen to Malin) is the traversal of the entire length of the island of Ireland between its two extreme points: Mizen Head in County Cork (the island's most southerly point) and Malin Head in County Donegal (the most northerly).
The route is attempted by cyclists, runners, walkers, and motorists, and is sometimes undertaken to raise money for charity or as a personal endurance goal.
As the crow flies, the two points are about apart. The shortest practical road route measures roughly , while most modern traverses cover between depending on the chosen course.
As of 2023, the record for cycling from Mizen Head to Malin Head was 15 hours 30 minutes 36 seconds, set by Ronan McLaughlin (Foyle CC) on 11 June 2023. The women's national record for the same route (MizenâÂÂMalin), also set in 2023, is 21 hours 43 minutes 03 seconds by Karen Cassidy (25 September 2023).
Other records include the first non-stop double crossing (MalinâÂÂMizenâÂÂMalin) Joe Barr's records in June 2015 (NorthâÂÂSouth 23 h 20 m; SouthâÂÂNorth 25 h 40 m; double in 49 h). Barr later bettered the non-stop double crossing in 2020, finishing in 44 h 15 m.
Early modern record progressions on foot include Richard Donovan's 2008 MizenâÂÂMalin run (5 days 13 hours 23 minutes). Jennifer Salter subsequently ran MalinâÂÂMizen in 4 days 23 hours 03 minutes 10 seconds (finishing 10 June 2011). Sharon Gayter improved the mark in March 2012 (4 days 1 hour 39 minutes 55 seconds, MizenâÂÂMalin). Later in 2012, Mimi Anderson lowered it again to 3 days 15 hours 36 minutes 23 seconds (MalinâÂÂMizen).
In May 2017, Irish international ultra-runner Eoin Keith ran MizenâÂÂMalin in 3 days 3 hours 47 minutes. The current menâÂÂs supported FKT is held by Ed McGroarty at 3 days 1 hour 55 minutes 15 seconds (5 July 2021, MizenâÂÂMalin). On 31 May 2024, Sophie Power set the Guinness World Record for the fastest female crossing on foot (MalinâÂÂMizen) in 3 days 12 hours 08 minutes.
End-to-end crossings are also undertaken on foot as walking challenges, often for charity. Notable long-distance walkers include John Dowling (race-walker), credited with completing the route in 5 days 22 hours 30 minutes in March 1982 (MizenâÂÂMalin). The route is also a popular multi-week backpacking itinerary, commonly reported in 3âÂÂ4 weeks depending on route and support.
Variants of the phrase "Malin to Mizen" is sometimes used to represent the whole geographical extent of Ireland: "a Malin Head to Mizen Head approach".