| Country: | IRL |
| Type: | R |
| Route: | 578 |
| Image Notes: | R578 near Dromina, County Cork |
| Length Km: | 42.1 |
| Terminus A: | R577 Ballydesmond |
| Junction: | R576 Newmarket R579 Freemount Crosses River Allow R522 Aughrim |
| Terminus B: | R515 Newtown South (west of Charleville) |
The R578 road is a regional road in Ireland, located in County Cork.[1] [2]