Rubuta ci gaba don wannan sakin layi - Treacy ya halarci makarantar St Anne's Post-Primary School a Cappoquin, County Waterford, Ireland, yana yin tafiyar mil bakwai zuwa makaranta kowace safiya. Ya kammala karatunsa daga Kwalejin Providence a Amurka. A shekara ta 1978 da 1979
ya lashe Gasar Cin Kofin Duniya ta IAAF a Glasgow, Scotland da Limerick, Ireland bi da bi.