1968 Isle of Man TT
The 1968 Isle of Man TT, the third round of the 1968 Grand Prix motorcycle racing season, involved six championship races on the Mountain Course on the Isle of Man during 8–14 June 1968. Giacomo Agostini won both the Junior and Senior races, completing the six laps of the latter race in 2 hours, 13 minutes and 39.4 seconds to win by almost nine minutes The Ultra-Lightweight 50cc race was won by Barry Smith, the Lightweight 125cc race by Phil Read and the Lightweight 250cc by Bill Ivy.
FIM Championship races
Ultra-Lightweight TT 50cc final standings
10 June 1968 – 3 Laps Mountain Course.| Place | Rider | Number | Machine | Speed | Time | Points |
| 1 |  Barry Smith | 1 | Derbi | 72.90 mph | 1:33.10.4 | 8 |
| 2 |  Chris M. Walpole | 9 | Honda | 67.26 mph | 1:40.59.6 | 6 |
| 3 | Les Griffiths | 14 | Honda | 66.12 mph | 1:42.36.0 | 4 |
| 4 | David Lock | 12 | Honda | 65.66 mph | 1:43.27.8 | 3 |
| 5 | Jim Pink | 29 | Honda | 64.14 mph | 1:45.54.2 | 2 |
| 6 | R.M. Udall | 7 | Honda | 67.70 mph | 1:40.03.8 | 1 |
| DNF |  Angel Nieto | 9 | Derbi |
Lightweight TT 125cc final standings
14 June 1968 – 3 Laps Mountain Course.| Place | Rider | Number | Machine | Speed | Time | Points |
| 1 | Phil Read | 2 | Yamaha | 99.12 mph | 1:08.31.4 | 8 |
| 2 | Bill Ivy | 9 | Yamaha | 97.78 mph | 1:09.27.8 | 6 |
| 3 | Kel Carruthers | 12 | Suzuki | 86.69 mph | 1:18.21.2 | 4 |
| 4 | Tommy Robb | 11 | Bultaco | 85.80 mph | 1:19.10.4 | 3 |
| 5 |  Gordon Keith | 7 | Brown Special | 84.88 mph | 1:20.06.4 | 2 |
| 6 | Steve Murray | 16 | Honda | 83.19 mph | 1:21.09.4 | 1 |
Lightweight TT 250cc final standings
10 June 1968 – 6 Laps Mountain Course.| Place | Rider | Number | Machine | Speed | Time | Points |
| 1 | Bill Ivy | 21 | Yamaha | 99.58 mph | 2:16.24.8 | 8 |
| 2 |  Renzo Pasolini | 5 | Benelli | 98.00 mph | 2:18.36.8 | 6 |
| 3 |  Heinz Rosner | 12 | MZ | 95.04 mph | 2:22.56.4 | 4 |
| 4 | Malcolm Uphill | 1 | Suzuki | 93.86 mph | 2:24.44.4 | 3 |
| 5 | Rod Gould | 32 | Yamaha | 93.61 mph | 2:25.07.0 | 2 |
| 6 | Bill Smith | 3 | Yamaha | 92.26 mph | 2:27.14.8 | 1 |
Junior TT 350cc final standings
12 June 1968 – 6 Laps Mountain Course.| Place | Rider | Number | Machine | Speed | Time | Points |
| 1 | Giacomo Agostini | 6 | MV Agusta | 104.78 mph | 2:09.38.6 | 8 |
| 2 | Renzo Pasolini | 17 | Benelli | 102.65 mph | 2:12.19.6 | 6 |
| 3 | Bill Smith | 7 | Honda | 95.02 mph | 2:22.58.6 | 4 |
| 4 | Derek Woodman | 15 | Aermacchi | 93.46 mph | 2:25.21.4 | 3 |
| 5 | John Cooper | 16 | Seeley | 93.35 mph | 2:25.32.0 | 2 |
| 6 | Jack Findlay | 1 | Aermacchi | 93.04 mph | 2:26.00.0 | 1 |
Sidecar TT 500cc final standings
8 June 1968 – 3 Laps Mountain Course.| Place | Rider | Number | Machine | Speed | Time | Points |
| 1 |  Siegfried Schauzu/H. Schneider | 7 | BMW | 91.09 mph | 1:14.34.2 | 8 |
| 2 | Johann Attenburger/J. Schillinger | 2 | BMW | 89.47 mph | 1:15.55.2 | 6 |
| 3 | Hans Luthringhauser/G. Hughes | 5 | BMW | 87.60 mph | 1:17.32.6 | 4 |
| 4 | Helmut Fath/W. Kalauch | 4 | BMW | 87.28 mph | 1:17.49.0 | 3 |
| 5 | John Brandon/C. Holland | 23 | BMW | 82.43 mph | 1:22.24.4 | 2 |
| 6 | Maurice Tombs/T. Tombs | 14 | BMW | 82.20 mph | 1:22.30.8 | 1 |
Senior TT 500cc final standings
14 June 1968 – 6 Laps Mountain Course.| Place | Rider | Number | Machine | Speed | Time | Points |
| 1 | Giacomo Agostini | 7 | MV Agusta | 103.63 mph | 2:13.39.4 | 8 |
| 2 | Brian Ball | 30 | Seeley-Matchless | 95.97 mph | 2:22.08.4 | 6 |
| 3 | Barry Randle | 39 | Petty Norton | 95.57 mph | 2:22.26.8 | 4 |
| 4 | Bill Smith | 14 | Matchless | 95.02 mph | 2:22.58.0 | 3 |
| 5 | Bernie Lund | Matchless | 94.96 mph | 2:22.34.2 | 2 | |
| 6 | Kel Carruthers | 3 | Norton | 94.23 mph | 2:23.06.4 | 1 |
Non-championship races
Sidecar 750cc TT final standings
8 June 1968 – 3 Laps Mountain Course.| Rank | Rider | Team | Speed | Time |
| 1 | Terry Vinicombe/J. Flaxman | BSA | 85.85 mph | 1.19.07.4 |
| 2 | Norman Hanks/Rose Arnold | BSA | 83.71 mph | 1.21.44.0 |
| 3 | Peter Brown/D. Bean | BSA | 83.03 mph | 1.21.48.0 |
| 4 | Mick Horsepole/G. Horspole | Triumph | 79.53 mph | 1.25.24.0 |
| 5 | John B. Crick/D. Senior | Triumph | 78.96 mph | 1.21.01.2 |
| 6 | Ken Graham/G. Sewell | Triumph | 78.45 mph | 1.26.35.4 |
| 7 | Ernie H. Leece/John Molyneux | LMS | 78.35 mph | 1.26.41.6 |
| 8 | Derek Plummer/Malcolm Brett | Triumph | 76.98 mph | 1.28.13.8 |
| 9 | Terry Windle/R. Hinchcliffe | Triumph | 76.49 mph | 1.28.48.8 |
| 10 | Dave Saville/E. Fletcher | Sabre | 76.26 mph | 1.29.04.0 |
Production TT 750 cc final standings
12 June 1968 – 3 Laps Mountain Course.| Rank | Rider | Team | Speed | Time |
| 1 | Ray Pickrell | Dunstall Norton Dominator | 98.13 mph | 1.09.13.2 |
| 2 | Billie Nelson | Norton | 94.62 mph | 1.11.47.2 |
| 3 | Tony Smith | BSA | 93.82 mph | 1.12.23.8 |
| 4 | Graham Bailey | Triumph | 89.66 mph | 1.13.12.6 |
| 5 | Malcolm Uphill | Triumph | 80.08 mph | 1.17.07.0 |
| 6 | Tony Godfrey | Norton | 85.92 mph | 1.19.03.2 |
Production TT 500 cc final standings
12 June 1968 – 3 Laps Mountain Course.| Rank | Rider | Team | Speed | Time |
| 1 | Ray Knight | Triumph | 90.09 mph | 1.15.23.6 |
| 2 | John Blanchard | Velocette | 88.58 mph | 1.16.41.2 |
| 3 | David Nixon | Triumph | 88.52 mph | 1.16.44.4 |
| 4 | Neil Kelly | Velocette | 86.47 mph | 1.18.33.0 |
| 5 | Graham Robinson | Honda | 85.54 mph | 1.19.24.2 |
| 6 | George Barnacle | Norton | 84.23 mph | 1.20.36.8 |
| 7 | Hugh Evans | BSA | 84.47 mph | 1.23.08.6 |
| 8 | Chas Mortimer | Ducati | 77.96 mph | 1.27.07.6 |
| 9 | T. Walker | Triumph | 75.26 mph | 1.30.15.0 |
Production TT 250 cc final standings
12 June 1968 – 3 Laps Mountain Course.| Rank | Rider | Team | Speed | Time |
| 1 | Tervor Burgess | Ossa | 87.21 mph | 1.17.53.4 |
| 2 | George E. Leigh | Bultaco | 85.23 mph | 1.19.41.8 |
| 3 | Barry Smith | Suzuki | 85.17 mph | 1.19.45.0 |
| 4 |  Brian Richards | Bultaco | 83.61 mph | 1.21.14.0 |
| 5 | Gordon Keith | Suzuki | 83.26 mph | 1.21.35.2 |
| 6 | Tommy Robb | Suzuki | 83.03 mph | 1.21.48.0 |
| 7 | Kel Carruthers | Suzuki | 82.10 mph | 1.23.43.8 |
| 8 | Mike Rogers | Ducati | 80.31 mph | 1.24.38.8 |
| 9 | Adrian T Cooper | Suzuki | 79.40 mph | 1.25.32.6 |
| 10 | Ernie Johnson | Suzuki | 79.38 mph | 1.25.33.6 |