Tani Ruckle (born 25 June 1962) is a Canadian-born former long-distance runner who represented Australia. She ran her career-best time for the marathon with 2:31:19 for fourth at the 1988 Chicago Marathon. That performance moved her to second on the Australian all-time list behind Lisa Martin, and as of 2018, ranks her 12th. She won a silver medal in the marathon at the 1990 Commonwealth Games. She also finished ninth at the 1988 World 15 km Road Race Championships.
She was born in Vancouver, British Columbia.
| Year | Competition | Venue | Position | Notes | |
|---|---|---|---|---|---|
| Representing | |||||
| 1985 | Australian Marathon | Sydney, Australia | 6th | 2:50:03 | |
| Melbourne Marathon | Melbourne, Australia | 4th | 2:48:36 | ||
| 1986 | Philippine Air Lines Marathon | Manila, Philippines | 1st | 2:46:58 | |
| Melbourne Marathon | Melbourne, Australia | 1st | 2:36:06 | ||
| 1987 | Australian Marathon | Sydney, Australia | 1st | 2:37:53 | |
| 1988 | World 15 km Road Race Championships | Adelaide, Australia | 9th | 50:59 | |
| Sapporo Half Marathon | Sapporo, Japan | 2nd | 73:57 | ||
| Gold Coast Half Marathon | Gold Coast, Australia | 2nd | 73:28 | ||
| Australian 15 km Road Race Championships | Canberra, Australia | 2nd | 51:49 | ||
| Chicago Marathon | Chicago, United States | 4th | 2:31:19 | ||
| 1989 | World 15 km Road Race Championships | Rio de Janeiro, Brazil | 24th | 53:42 | |
| 1990 | Commonwealth Games Marathon | Auckland, New Zealand | 2nd | 2:33:15 | |
| World 15 km Road Race Championships | Dublin, Ireland | 18th | 51:55 | ||
| 1992 | London Marathon | London, United Kingdom | 17th | 2:40:39 | |
| 1994 | Nagoya International Women's Marathon | Nagoya, Japan | 5th | 2:34:29 | |
| Commonwealth Games Marathon | Victoria, Canada | 15th | 3:06:27 | ||
| 1996 | Sydney International Marathon | Sydney, Australia | 4th | 2:40:01 | |