From San Juan, Puerto Rico: Start in San Juan and head southeast toward Highway 26. Highway PR-26: Continue on Highway 26 heading east toward Carolina and then toward Río Piedras. PR-66 Highway: Stay on Highway 26 until you reach the exit for PR-66 Highway heading toward Gurabo. Exit to Gurabo: Take the exit toward Gurabo and stay on PR-66 Highway. Exit to PR-181 Highway: After a few kilometers, take the exit onto PR-181 Highway toward San Lorenzo/Las Piedras. PR-181 Highway: Continue on PR-181 Highway toward Las Piedras. Entering Las Piedras: Upon reaching Las Piedras, follow the signs to stay on PR-181 Highway. Highway 926: After traveling a stretch on PR-181 Highway, look for the intersection with Highway 926 in Las Piedras.