Marshall Alfaro is a professional footballer from CRC and is currently 18 years old. He is on the books of CS Herediano and wears shirt number 45. His main role on the pitch is Goalkeeper.

His latest transfer saw him join CS Herediano Youth from Santa Cruz PFA via on 2025-01-01.

In the FIFA U17 World Cup 2025, Marshall Alfaro played 3 matches, averaging 0 interceptions, 0 tackles, and 0 clearances per game.