| Personal information | |
|---|---|
| Born | 23 February 1923 Olavarria, Argentina |
| Died | 19 March 1978 (aged 55) Béccar, Argentina |
| Sport | |
| Sport | Track & Field |
| Event | 800m & 4x400m relay |
Guillermo Avalos (23 February 1923 – 19 March 1978) was an Argentine athlete who competed in the 1948 Summer Olympics in the 800m and 4 × 400 m relay, but he failed to advance past the first round in either event.
Avalos died in Béccar on 19 March 1978, at the age of 55.[1]