1978 Junior TT
Course name: Mountain (post 1914)
Course length: 188.85 miles (5 laps)
Competitors
| Position | Competitor(s) | Time | Speed | Machine |
|---|---|---|---|---|
| 1 | Mortimer, Chas | 1:52:23.80 | 100.7 | Yamaha |
| 2 | Williams, Charlie | 1:52:57.40 | 100.2 | Yamaha |
| 3 | Herron, Tom | 1:53:56.40 | 99.34 | Yamaha |
| 4 | Waring, Graham | 1:55:13.00 | 98.24 | Yamaha |
| 5 | Lindsay, Joe | 1:55:35.80 | 97.91 | Yamaha |
| 6 | Ingham, Bill | 1:55:46.60 | 97.76 | Yamaha |
| 7 | Chatterton, Derek | 1:55:56.80 | 97.62 | Yamaha |
| 8 | Weeden, John | 1:56:06.40 | 97.48 | Yamaha |
| 9 | Katayama, Takazumi | 1:56:17.40 | 97.33 | Yamaha |
| 10 | Richards, Ian | 1:56:25.80 | 97.21 | Yamaha |
| 11 | Dunlop, Joey | 1:56:40.00 | 97.02 | Yamaha |
| 12 | Hailwood, Mike | 1:56:46.80 | 96.92 | Yamaha |
| 13 | Blake, Kenny | 1:57:00.20 | 96.74 | Yamaha |
| 14 | Murray, Bernard | 1:57:07.80 | 96.63 | Yamaha |
| 15 | Coates, Ernie | 1:58:06.60 | 95.83 | Yamaha |
| 16 | Tonkin, Steve | 1:58:25.00 | 95.58 | Yamaha |
| 17 | Horton, Clive | 1:58:33.80 | 95.46 | Yamaha |
| 18 | Harrison, Kenny | 1:59:37.40 | 94.62 | Yamaha |
| 19 | Peters, Brian | 1:59:57.40 | 94.35 | Yamaha |
| 20 | Labuschagne, Peter | 2:01:29.40 | 93.16 | Yamaha |
| 21 | Cull, Steve | 2:01:33.20 | 93.12 | Yamaha |
| 22 | Hughes, Dave | 2:01:35.40 | 93.09 | Yamaha |
| 23 | Burrows, Ricky | 2:02:52.00 | 92.12 | Yamaha |
| 24 | Chatterton, Mick | 2:03:34.60 | 91.59 | Yamaha |
| 25 | Scott, Jim | 2:03:50.80 | 91.39 | Yamaha |
| 26 | Cormican, Donal | 2:04:01.20 | 91.26 | Yamaha |
| 27 | Junk, Courtney | 2:04:05.40 | 91.21 | Yamaha |
| 28 | Lovell, Peter | 2:04:59.00 | 90.56 | Cotton |
| 29 | Lawton, Alan | 2:05:15.60 | 90.36 | Yamaha |
| 30 | Duncan, Mike | 2:06:06.60 | 89.75 | Yamaha |
| 31 | Hickman, Dave | 2:06:18.40 | 89.61 | Jawa |
| 32 | Inwood, Ken | 2:06:25.60 | 89.53 | Yamaha |
| 33 | Dawson, Walter | 2:06:28.00 | 89.5 | Yamaha |
| 34 | Trotter, Les | 2:06:33.40 | 89.43 | Yamaha |
| 35 | Trollope, Dennis | 2:07:03.40 | 89.08 | Yamaha |
| 36 | Loughridge, Tom | 2:07:46.00 | 88.59 | Yamaha |
| 37 | Higgins, Mick | 2:08:30.00 | 88.08 | Yamaha |
| 38 | Haslam, Ron | 2:08:55.40 | 87.79 | Cotton |
| 39 | Riley, John | 2:09:43.60 | 87.25 | Yamaha |
| 40 | Roberts, Eddie | 2:11:39.20 | 85.97 | Jawa |
| 41 | Launchbury, Fred | 2:17:49.00 | 82.13 | Maico |
| 42 | Feist, Paul | 2:19:43.80 | 81 | Yamaha |
| 43 | Wilhelm, Wolfgang | 2:19:59.80 | 80.85 | Yamaha |
| 44 | Rastel, Michel | 2:23:08.40 | 79.07 | Yamaha |
| 45 | Watts, Nev | 56.16 | Yamaha | |
| R | Bowman, Bill | Suzuki | ||
| R | Asami, Sadao | Yamaha | ||
| R | Brown, Dave | Yamaha | ||
| R | Carr, Len | Yamaha | ||
| R | Casement, Denis | Yamaha | ||
| R | Dean, James | Yamaha | ||
| R | McKenna, Brendan | Yamaha | ||
| R | Neve, Chris | Yamaha | ||
| R | Nicholls, Roger | Yamaha | ||
| R | Rae, Bill | Yamaha | ||
| R | Rigg, Nigel | Yamaha | ||
| R | Shimmin, Danny | Yamaha | ||
| R | Tuxworth, Neil | Yamaha | ||
| R | Vogt, Gerhard | Yamaha | ||
| R | Williams, John G. | Yamaha | ||
| R | Logan, John | Yamaha | ||
| R | Martin, Keith | Yamaha | ||
| R | Grant, Mick | Kawasaki | ||
| R | Murray, Steve | Yamaha | ||
| R | Jackson, Alan | Yamaha | ||
| R | Simpson, Bill | Yamaha | ||
| R | George, Alex | Yamaha |