Pedzisa mutsara unotevera: Forrest akatamba pa1987 FIFA U-20 World Cup uye akaita kutanga kwake kwechikwata chevakuru cheCanada mumutambo wehushamwari waMay 1988 neChile. Akawana makapu makumi mashanu nematanhatu (kusasanganisa mutambo waMay 1990 North American Championship wakanangana neUS), vazhinji vevamiriri vese munhoroondo yetimu yenyika yakabatana naPat Onstad uye vakawana machira akachena munhoroondo yenyika vasati vasiya nhabvu yepasi rose muna 2002. Chinhu chikuru chebasa rake renyika yose pasina mubvunzo chaiva kubatsira Canada kukunda
2000 CONCACAF Gold Cup, umo Forrest akatumidzwa zita remutambo MVP uye Most Valuable Goalkeeper nekubvumira zvibodzwa zvitatu chete uye kumisa zvirango zviviri mumitambo mishanu yechikwata chake. Uyewo panguva yebasa rake renyika yose Canada yakanga yakachengetedza 1<unk>1 kurova neBrazil mwedzi mumwe chete pamberi peNyika Cup muUnited States muna 1994. Forrest akaenderera mberi nekubudirira kurwisa Brazil muna 2001, achinyora pepa rakachena mukukwikwidza 0<unk>0 mu2001 Confederations Cup muJapan. Muna 2012, Forrest akasarudzwa nevateveri muCanada yakanakisa XI mumakore ekutanga zana eCSA.