Pietro Imhof
| Date | Swim | Route | Km | Age | Time/Place |
|---|---|---|---|---|---|
| 1987 Sep 19 | Lake Zurich Marathon Swim | Rapperswil to Zurich | 26.4 | 31-32 | 08:51:16 (6/13) |
| 1988 Aug 6 | Lake Zurich Marathon Swim | Rapperswil to Zurich | 26.4 | 32-33 | 08:30:40 (7/15) |
| 1989 Sep 16 | Lake Zurich Marathon Swim | Rapperswil to Zurich | 26.4 | 33-34 | 09:23:10 (2/11) |
| 1991 Aug 3 | Lake Zurich Marathon Swim | Rapperswil to Zurich | 26.4 | 35-36 | 08:54:34 (7/14) |
| 1992 Jul 18 | Lake Zurich Marathon Swim | Rapperswil to Zurich | 26.4 | 36-37 | 08:26:25 (15/24) |
| 1993 Jul 17 | Lake Zurich Marathon Swim | Rapperswil to Zurich | 26.4 | 37-38 | 07:45:30 (4/10) |
| 1994 Aug 6 | Lake Zurich Marathon Swim | Rapperswil to Zurich | 26.4 | 38-39 | 08:15:51 (14/21) |
| 1995 Aug 5 | Lake Zurich Marathon Swim | Rapperswil to Zurich | 26.4 | 39-40 | 08:49:53 (12/21) |
| 1996 | Lake Zurich Marathon Swim | Rapperswil to Zurich | 26.4 | 08:33:21 (8/33) |