2008 Isle of Man TT Superbike/Senior TT Leaderboard and Practice Times Superbike/Senior TT Leaderboard and Practice Times

| Rank_ | Rider | Mon_26_May | Tues_27_May | Wed_28_May | Thurs_29_May | Fri_30_May |
|---|---|---|---|---|---|---|
| 1 | John McGuinness 1000cc Honda | 17` 58.34 125.960mph | – No Time | Cancelled No Time | 17` 52.08 126.696mph | 17` 36.11 128.611mph |
| 2 | Cameron Donald 1000cc Suzuki | 17` 59.53 125.882mph | – No Time | Cancelled No Time | 17` 57.37 126.074mph | 17` 37.45 128.448mph |
| 3 | Bruce Anstey 1000cc Suzuki | 17` 59.97 125.771mph | – No Time | Cancelled No Time | 17` 53.97 126.472mph | 17` 46.65 127.820mph |
| 4 | Guy Martin 1000cc Honda | 17` 57.83 126.020mph | – No Time | Cancelled No Time | 17` 48.84 127.080mph | 17` 43.07 127.770mph |
| 5 | Ian Hutchinson 1000cc Yamaha | – No Time | – No Time | Cancelled No Time | 17` 55.45 126.299mph | 17` 49.86 126.959mph |