Mezue ahịrịokwu na-esonụ: Na 2008 Summer Olympics na Beijing, McGrath ruru eru maka nke abụọ ya Canadian squad, dị ka a 32-afọ agadi, na
agbụrụ ụmụ nwoke na-agafe mba site na ịnweta otu n'ime ọdụ ụgbọ mmiri atọ dị na mba ahụ site na Canadian Cycling Association na Union Cycliste Internationale, dabere na arụmọrụ ya kachasị mma na usoro World Cup, World Championships, na Mountain Biking World Series. McGrath enweghi ike ịsọ mpi na arụmọrụ dị egwu sitere na Athens, ebe ọ tara ahụhụ site na taya taya wee gbaa gburugburu gburugburu mpaghara teknụzụ iji dochie taya taya ahụ. N'ịghọta na wiil ọhụrụ ya nwere obere mmiri na-agbapụta n'ebe a họpụtara, McGrath kpebiri ịkwụsị njem ya mgbe ọ fọdụrụ nanị sekit atọ, o wee nọrọ n'ọnọdụ nke iri anọ na anọ.