| Rnk | Bib |  | Name | Lap 4 | End of Lap 4 |
| 1 | 582 | | Leslie-Anne McKenzie | 01:13.0 (2) | 52:17.6 |
| 2 | 580 | | Christine Keylor | 01:05.7 (1) | 55:25.3 (+3:07.7) |
| 3 | 576 | | Heidi Bryden | 01:21.7 (3) | 58:39.8 (+6:22.2) |
| 4 | 578 | | Joanne Giesinger | 01:22.0 (4) | 58:41.5 (+6:23.9) |
| 5 | 584 | | marie stevenson | 01:44.9 (7) | 58:49.2 (+6:31.5) |
| 6 | 579 | | Joanne Graham | 02:25.1 (9) | 1:00:54.9 (+8:37.2) |
| 7 | 583 | | Joanne Shields | 01:28.2 (6) | 1:01:54.2 (+9:36.5) |
| 8 | 575 | | Ellen Ainsley | 01:22.7 (5) | 1:02:19.9 (+10:02.2) |
| 9 | 577 | | Patricia Drews | 01:59.0 (8) | 1:02:32.1 (+10:14.5) |
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