Start times in Zermatt 1624 m above sea level
| 9:30 a.m. | TOP20RUN |
| * 10:12 a.m. | Half marathon block 1 |
| * 10:15 a.m. | Half marathon block 2 |
| * 10:21 a.m. | Half marathon block 3 |
| * 10:27 am | Half marathon block 4 |
*Note: Arrive at the start area Obere Matten at least 20 minutes before the start time