| Rank | BIB | Name | Year | Club | Time | ||
|---|---|---|---|---|---|---|---|
| 1 | 556 | Ívar Haukur Sævarsson | 1990 | Breiðablik | 00:21:18 | ||
| 2 | 526 | Tom Nielsen | 1984 | FH Frjálsar | 00:23:55 | +02:37 | |
| 3 | 528 | Ragnar Björnsson | 2015 | Ármann | 00:25:07 | +03:49 | |
| 4 | 532 | Björn Margeirsson | 1979 | Ármann | 00:25:07 | +03:49 | |
| 5 | 563 | Hlynur Þráinn Sigurjónsson | 1988 | 00:26:07 | +04:49 | ||
| 6 | 574 | Ólafur Sánchez | 2000 | 00:28:20 | +07:02 | ||
| 7 | 529 | Margeir Björnsson | 2018 | Ármann | 00:29:03 | +07:45 | |
| 8 | 546 | Hilmar Másson | 1995 | 00:31:01 | +09:43 | ||
| 9 | 499 | Egill Ingi Jónsson | 1970 | Fjallakofinn | 00:31:59 | +10:41 | |
| 10 | 498 | Finnbogi Arnason | 1988 | Fjallakofinn | 00:32:51 | +11:33 | |
| 11 | 472 | Elís Bergmann Stefánsson | 2014 | 00:33:19 | +12:01 | ||
| 12 | 517 | Friðrik Ari Sigurðarson | 1985 | 00:33:46 | +12:28 | ||
| 13 | 545 | Dagur Einarsson | 1996 | Knattspyrnufélag Reykjavíkur | 00:35:09 | +13:51 | |
| 14 | 540 | Patrekur Leó Jakobsson | 2014 | 00:37:02 | +15:44 | ||
| 15 | 534 | Franz Jörgensen | 1994 | Gabegaba | 00:43:44 | +22:26 | |
| 16 | 487 | Daníel Ármannsson | 1978 | Nátturuhlaup/Flækjufætur | 00:44:31 | +23:13 | |
| 17 | 491 | Jökull Elí Jónsson | 2018 | 00:46:06 | +24:48 | ||
| 18 | 492 | Jón Elí Rúnarsson | 1995 | 00:46:07 | +24:49 |