Olympic and African champion steeplechaser. He made his international debut at the 1984 Summer Olympics, where he finished seventh in the 3000m steeplechase. Four years later, he broke Olympic record to take gold in Seoul. Kariuki also won 10,000 metres Universiade title in Duisburg.
| Championship | Total | |||
|---|---|---|---|---|
| Olympic Games | 1 | 0 | 0 | 1 |
| Universiade | 1 | 0 | 0 | 1 |
| Continental Cup | 2 | 0 | 0 | 2 |
| African Championships | 1 | 0 | 0 | 1 |
| East African Championships | 0 | 1 | 0 | 1 |
| Commonwealth Games | 1 | 0 | 0 | 1 |
| International total | 6 | 1 | 0 | 7 |
| Year | Championship | Event | Venue | Place | Mark | Record | Notes |
|---|---|---|---|---|---|---|---|
| 1990 | Commonwealth Games | 3000SC | Auckland | 1 | 8:20.64 | ||
| 1989 | Continental Cup | 3000SC | Barcelona | 1 | 8:20.84 | ||
| 1989 | Universiade | 10,000m | Duisburg | 1 | 28:35.46 | CR | |
| 1988 | Olympic Games | 3000SC | Seoul | 1 | 8:05.51 | OR | |
| 1985 | Continental Cup | 3000SC | Canberra | 1 | 8:39.51 | ||
| 1985 | African Championships | 3000SC | Cairo | 1 | 8:20.74 | CR | |
| 1985 | East African Championships | 3000SC | Cairo | 2 | 8:24.02 |
Kenya