 Pilar Shimizu akaberekwa musi waMay 27, 1996 muTamuning, Guam mutambi wekushambira weGuam. Paakanga achikwikwidza kumitambo yeOlympic yezhizha ya2012 akaputsa rekodhi yenyika yemakore makumi maviri yakagadzwa naTammie Kaae, mumwe mutambi weOlympic anobva kuGuam. Paaya maOlympics akava mutambi weOlympic muduku zvikurusa wenguva dzose anobva kuGuam pazera ramakore 16. Akapedza ari wechi42 mumakwikwi emamita 100 ekumhanya nechipfuvachiitiko uye haana kuenda kumasemifainari. Shimizu akakwikwidzawo mumitambo yeOlympic ya2016. Munyika yose, Shimizu akawana menduru nhatu dzendarira paMitambo yeOceania uye menduru mbiri dzesirivha paMitambo yePacific. 