5 trails
| Name | Distance | Ascent | Descent | OpenStreetMap Relation |
|---|---|---|---|---|
| 1 - Western Hydra | 10.8 mi | 2,810 ft | 2,835 ft |  15882340 |
| 3 - Hydra (Town) – Zourva Monastery – Zourva Lighthouse | 7.8 mi | 1,690 ft | 1,668 ft | 15882416 |
| 4 - Hydra (Town) – Mandraki – Hydra (Town) | 4.1 mi | 811 ft | 832 ft | 15882559 |
| Hydra Trail 1A | 3.2 mi | 494 ft | 1,131 ft | 15938095 |
| 5 - | 1.6 mi | 954 ft | 46 ft | 15882352 |