1978 Formula 1 TT
Course name: Mountain (post 1914)
Course length: 226.38 miles (6 laps)
Competitors
| Position | Competitor(s) | Time | Speed | Machine |
|---|---|---|---|---|
| 1 | Hailwood, Mike | 2:05:10.20 | 108.51 | Ducati |
| 2 | Williams, John G. | 2:07:09.60 | 106.81 | Honda |
| 3 | Richards, Ian | 2:08:07.40 | 106.01 | Kawasaki |
| 4 | Dahne, Helmut | 2:08:26.80 | 105.74 | Honda |
| 5 | George, Alex | 2:08:28.20 | 105.72 | Triumph |
| 6 | Mortimer, Chas | 2:10:50.40 | 103.81 | Suzuki |
| 7 | Lucas, Malcolm | 2:12:00.40 | 102.89 | BSA |
| 8 | Wrettom, Kevin | 2:12:03.20 | 102.85 | Kawasaki |
| 9 | Casement, Denis | 2:13:26.60 | 101.78 | Honda |
| 10 | Tomkinson, Ian | 2:14:16.60 | 101.15 | Triumph |
| 11 | Moyce, Asa | 2:15:05.40 | 100.54 | Kawasaki |
| 12 | Sanby, Charlie | 2:16:00.00 | 99.87 | Guzzi |
| 13 | Knight, Ray | 2:17:49.40 | 98.55 | Honda |
| 14 | Lunn, Doug | 2:20:28.40 | 96.69 | Ducati |
| 15 | Williams, John H. | 2:20:33.60 | 96.63 | Honda |
| 16 | Cartwright, David | 2:23:03.80 | 94.94 | Ducati |
| 17 | Wilkinson, John | 2:23:14.00 | 94.83 | Suzuki |
| 18 | Nothinger, Max | 2:23:49.00 | 94.44 | Kawasaki |
| 19 | Rutter, Frank | 2:24:58.20 | 93.69 | Triumph |
| 20 | Roberts, Barry | 2:24:59.20 | 93.68 | Laverda |
| 21 | Hammond, John | 2:26:20.00 | 92.82 | Guzzi |
| 22 | Trollope, Dennis | 2:26:46.00 | 92.54 | Yamaha |
| 23 | McMillan, Dennis | 2:27:03.20 | 92.36 | Kawasaki |
| 23= | McMillan, Dennis | 2:27:03.20 | 92.36 | Kawasaki |
| 24 | Bentman, Graham | 2:27:21.20 | 92.17 | BMW |
| 25 | Gasse, Harald | 2:27:43.80 | 91.94 | Suzuki |
| 26 | Davies, Peter | 2:27:52.00 | 91.85 | Laverda |
| 27 | Tuxworth, Neil | 2:31:13.00 | 89.82 | Honda |
| 28 | Taylor, Peter | 2:39:09.20 | 85.34 | Kawasaki |
| 29 | Willison, Thomas | 2:43:48.00 | 83.42 | Kawasaki |
| 30 | Homewood, Barry | 83.11 | Kawasaki | |
| 31 | Watts, Nev | 73.74 | Yamaha | |
| R | Russell, Martin | BSA | ||
| R | Nicholls, Roger | Ducati | ||
| R | Rae, James | Ducati | ||
| R | Scaysbrook, Jim | Ducati | ||
| R | Armstrong, Roy | Guzzi | ||
| R | Crick, John | Honda | ||
| R | Herron, Tom | Honda | ||
| R | Higham, Jack | Honda | ||
| R | Jeffreys, Roy | Honda | ||
| R | Kerner, Hartley | Honda | ||
| R | McKechnie, Ewan | Honda | ||
| R | Sandall, Guy | Kawasaki | ||
| R | Fogarty, George | Moto Guzzi | ||
| R | Kerby, Dave | Norton | ||
| R | Lovell, Peter | Norton | ||
| R | Bowler, Roger | Honda | ||
| R | Caffrey, John | Suzuki | ||
| R | Kirwan, Mal | Suzuki | ||
| R | Loughridge, Tom | Suzuki | ||
| R | Trotter, Les | Suzuki | ||
| R | Corbett, Roger | Triumph | ||
| R | Roberts, Eddie | Ducati | ||
| R | Poxon, Mick | Triumph | ||
| R | Smith, Bill | Yoshimura Bimota Suzuki | ||
| R | Stephens, John | Honda | ||
| R | Hunt, Michael | Laverda | ||
| R | Read, Phil | Honda | ||
| R | Strijbis, Jan | Triumph | ||
| R | Taylor, Roger | Laverda | ||
| R | Dunlop, Joey | Honda | ||
| R | Kelly, Geoff | Laverda | ||
| R | Haslam, Ron | Honda |