Kammala wannan jumla: Treacy ya halarci makarantar St Anne's Post-Primary School a Cappoquin, County Waterford, Ireland, yana yin tafiyar sama da mil bakwai zuwa makaranta kowace safiya. Ya kammala karatunsa daga Kwalejin Providence a Amurka. A shekara ta 1978 da
A shekarar 1979 ya lashe gasar tseren tseren kasa ta duniya ta IAAF a Glasgow, Scotland da Limerick, Ireland.