Difficulty Index
Our 0–10 difficulty score factors in elevation, hill placement, weather, altitude and course layout. See the methodology →
| Marathon | Country | Date | Elev | Difficulty |
|---|---|---|---|---|
| Run Galway Bay Marathon | 03 October 2026 | 40m | 2.0/10 | |
| Rhode AC Marathon | 19 September 2026 | 90m | 2.5/10 | |
| Cork City Marathon | 30 May 2027 | 117m | 2.9/10 | |
| Waterford Viking Marathon | 21 June 2026 | 112m | 3.0/10 | |
| Portumna Forest Marathon | TBC | 115m | 3.5/10 | |
| Longford Marathon | 30 August 2026 | 166m | 3.8/10 | |
| Belfast City Marathon | 02 May 2027 | 190m | 4.3/10 | |
| The Great Limerick Run | 02 May 2027 | 226m | 4.8/10 | |
| Dublin Marathon | 25 October 2026 | 216m | 5.0/10 | |
| Kilkenny Medieval Marathon | 12 September 2026 | 275m | 5.3/10 | |
| Kildare Thoroughbred Run Marathon | 21 June 2026 | 256m | 5.9/10 | |
| Connemara International Marathon | 25 April 2027 | 369m | 6.6/10 | |
| Dingle Marathon | 05 September 2026 | 397m | 7.1/10 | |
| Tullaroan Marathon | TBC | 635m | 7.8/10 | |
| The Glenmore Challenge Running Festival Marathon | TBC | 531m | 7.8/10 | |
| Ballinskelligs Marathon 2026 | 25 October 2026 | 630m | 7.9/10 | |
| Clare Burren Marathon Challenge | 29 May 2027 | 650m | 8.0/10 | |
| Glendalough Lap of the Gap Marathon | 27 May 2027 | 788m | 8.0/10 | |
| Glenbeigh Glencar Marathon | 11 July 2026 | 560m | 8.1/10 |