Erskine, 20, had a time of 15 minutes, 58 seconds for the 3.1-mile course.
Former Ridgefielder Peter Brady, 40, of Jersey City, N.J., was second in 16:42.
Ryan Polo, 20, was the first Ridgefield finisher as he placed third overall in 17:10.
Three other Ridgefielders — Will Bordash (fifth), Richard Duffy (sixth) and Cameron Tepfer (10th) were also in the top 10.
Megan Keane, 19, of Darien was the first female finisher in a time of 19:18. She was 17th overall.
Keane finished one place ahead of Terra Briody, 19, of Ridgefield, who placed 18th overall in 19:21.
A record 999 runners finished the race.