| Manx MM | Sat 30th Mar 1991 | 9/- | 05:30:15 | See all Frank Thomas at Manx MM |
| Long Mynd Valleys | Sun 24th Feb 1991 | 21/150 | 01:56:59 | See all Frank Thomas at Long Mynd Valleys |
| Box Hill | Sat 19th Jan 1991 | 14/138 | 00:57:09 | See all Frank Thomas at Box Hill |
| Club Championships | Sat 10th Nov 1990 | 25/59 | 01:50:49 | See all Frank Thomas at Club Championships |
| Black Mountains | Sat 29th Sep 1990 | 27/74 | 03:08:31 | See all Frank Thomas at Black Mountains |
| Brecon Beacons | Sat 25th Aug 1990 | 7/54 | 02:53:53 | See all Frank Thomas at Brecon Beacons |
| Borrowdale | Sat 4th Aug 1990 | 46/276 | 03:27:57 | See all Frank Thomas at Borrowdale |
| Rock and Run | Sat 19th May 1990 | 14/- | 14:00:47 | See all Frank Thomas at Rock and Run |
| Manx MM | Sat 14th Apr 1990 | 12/- | 06:28:13 | See all Frank Thomas at Manx MM |
| Roaches | Sun 12th Nov 1989 | 46/178 | 02:22:16 | See all Frank Thomas at Roaches |