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Race Calendar

Race type

County

Month

Ultra Marathon• Tipperary

IMRA Aherlow 50K

7 March 2026

Ultra Marathon• Antrim

Castle to Castle Run 52.4 miles

14 March 2026

Ultra Marathon• Limerick

31st Anglo Celtic Plate 100K

21 March 2026

Ultra Marathon• Kerry

Tralee Marathon and Race Series 2 50K

21 March 2026

Ultra Marathon• Wicklow

IMRA Maurice Mullins Ultra 50.5K

28 March 2026

Ultra Marathon• Wicklow

IMRA Night Challenge 2:Cruagh

2 April 2026

Ultra Marathon• Waterford

IMRA Knockmealdown Mountain Ultra 66K

3 April 2026

Ultra Marathon• Tipperary

Hellevation Backyard Ultra

3 April 2026

Ultra Marathon• Antrim

Belfast to Londonderry 75 Mile

10 April 2026

Ultra Marathon• Galway

Connemarathon Ultra 63K / 39.3 Miles

18 April 2026

Ultra Marathon• Longford

Royal Canal Run Longford 53K Ultra

24 April 2026

Ultra Marathon• Wicklow

ALTAR 50K

24 April 2026

Ultra Marathon• Wicklow

ALTAR 100K

24 April 2026

Ultra Marathon• Kerry

Waterville Trail Running Festival 130K Ultra

1 May 2026

Ultra Marathon• Kerry

Waterville Trail Running Festival 68K

1 May 2026

Ultra Marathon• Dublin

Dublin to Belfast Ultra 170K / 107 miles

8 May 2026

Ultra Marathon• Dublin

Dublin Mountain Backyard Ultra

8 May 2026

Ultra Marathon• Cork

IMRA Beara Way Ultra 161K

14 May 2026

Ultra Marathon• Kerry

Tralee Marathon and Race Series 3 40 Miles

15 May 2026

Ultra Marathon• Cork

IMRA Beara Way LITE 70K

15 May 2026

Ultra Marathon• Mayo

Wild Atlantic Ultra 50 miles

22 May 2026

Ultra Marathon• Tyrone

Argory Dusk to Dawn Challenge

22 May 2026

Ultra Marathon• Kilkenny

Tullaroan Festival of Running Ultra Marathon

29 May 2026

Ultra Marathon• Wexford

Wexford Festival of Running 50K

29 May 2026

Ultra Marathon• Wexford

Wexford Festival of Running 100K

29 May 2026

Ultra Marathon• Galway

Portumna Forest Marathon 50K Ultra

5 June 2026

Ultra Marathon• Wicklow

IMRA Glendalough Clover 70K

19 June 2026

Ultra Marathon• Tyrone

Argory Dusk to Dawn Challenge 6 Hour

19 June 2026

Ultra Marathon• Tyrone

Argory Dusk to Dawn Challenge 12 Hour

19 June 2026

Ultra Marathon• Kerry

Tralee Marathon and Race Series 4 100K

19 June 2026

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