Arlington Trotters
- Running club for runners of all levels. Site includes membership information, maps of training runs in the area, and contact persons.
- http://northwestsuburbs.us/arltrotter/

Arlington Park
- A thoroughbred horse racing track. Features include online simulcasting, programs and past performances, results, workouts, real-time odds, track maintenance, and news. A Churchill Downs Company.
- http://www.arlingtonpark.com/