42 min via Expreso Román Baldorioty de Castro/PR-26 and PR-66 Fastest route, despite the usual traffic This route has tolls. San Juan Continue to Santurce 4 min Follow Expreso Román Baldorioty de Castro/PR-26 and PR-66 to Interstate PR3 S/PR-3 S in Río Grande. Exit from PR-66 24 min Follow Interstate PR3 S/PR-3 S, PR-955R and Ave John Bain to Calle Mamey 7 min Calle Mamey