| 58th WRC rally |
| Round of season: | 6 of 11 |
| Official name: | 1000 Lakes Rally |
| Edition: | 28th |
| Date: | from Friday 25-Aug-1978 to Sunday 27-Aug-1978 |
| Rally HQ: | Jyvaskyla, Central Finland; Finland |
| Clerk of the Course: | Reino Partanen |
| Surface: | Gravel |
| |
| Entries: | 109 | |
| Starters: | 104 | |
| Finishers: | 55 | (52.9% of starters) |
| |
| Stages: | 45 | |
| Shortest: | 1.60 | km | (SS22 Sirkkaharju) |
| Longest: | 25.50 | km | (SS36 Kurjala) |
| Slowest: | 82.43 | km/h | (SS14 Riukusalmi) |
| Fastest: | 134.12 | km/h | (SS32 Rikkaranta) |
| Planned stage distance: | 365.70 | km | (26.2% of total distance) |
| Actual stage distance: | 365.70 | km | (26.2% of total distance) |
| Road section distance: | 1,032.00 | km |
| Total distance: | 1,397.70 | km |
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