Friday 14 May 2027
| TIME | ACTIVITY | LOCATION |
|---|---|---|
| 08:00 - 13:00 | Eryri 100M race bib collection | Llanberis |
| 08:00 - 13:00 | Eryri 100M drop-bag 'drop off' available | Llanberis |
| 08:00 - 13:00 / 14:30 - 16:00 | Eryri 100K & Eryri 80K race bib collection | Llanberis |
| 08:00 - 20:00 | Ultra-Trail Village and official UTMB merchandise | Llanberis |
| 14:00 | Eryri 100M race start | Llanberis |
| 16:00 - 22:00 | Eryri 50K race bib collection | Llanberis |
| 16:00 - 22:00 | Eryri 100K drop-bag 'drop off' available | Llanberis |
| 18:30 - 19:00 | Eryri 80K shuttle service | Llanberis |
| 19:00 - 19:30 | Eryri 80K drop-bag 'drop off' available | Caernarfon |
| 20:00 | Eryri 80K race start | Caernarfon |
Saturday 15 May 2027
| TIME | ACTIVITY | LOCATION |
|---|---|---|
| 02:00 | ETA for Eryri 80K fastest finisher | Llanberis |
| 05:30 | Eryri 100K race start | Llanberis |
| 08:00 - 20:00 | Ultra-Trail Village and official UTMB merchandise | Llanberis |
| 08:30 / 08:45 / 09:00 | Eryri 50K race start (3 waves) | Llanberis |
| 13:30 | ETA for Eryri 100M fastest finisher | Llanberis |
| 14:30 | ETA for Eryri 50K fastest finisher | Llanberis |
| 15:30 | ETA for Eryri 100K fastest finisher | Llanberis |
| 17:00 | Eryri 80K and Eryri 50K prize-giving ceremony | Llanberis |
| 16:00 - 22:00 | Eryri 25K race bib collection | Llanberis |
| 23:00 | Eryri 50K course close | Llanberis |
Sunday 16 May 2027
| TIME | ACTIVITY | LOCATION |
|---|---|---|
| 08:00 - 15:00 | Ultra-Trail Village and official UTMB merchandise | Llanberis |
| 08:30 / 8:45 / 09:00 | Eryri 25K race start (3 waves) | Llanberis |
| 10:00 | ETA for Eryri 25K fastest finisher | Llanberis |
| 14:00 | Eryri 100M and Eryri 100K course close | Llanberis |
| 14:00 | Eryri 25K course close | Llanberis |
| 14:30 | Eryri 100M, Eryri 100K and Eryri 25K prize-giving ceremony | Llanberis |
| 15:00 | Event close | Llanberis |
| 15:00 | Eryri 100M and Eryri 100K drop-bag collection close | Llanberis |