Chicago’s Union Park is a public greenspace and concert/event venue next to the Ashland CTA Station on the green and pink rail lines. The park has a field house with a gymnasium and fitness center, outdoor swimming pool, tennis courts, baseball fields, other sports fields and a playground.
The Ashland Station is directly next to Union Park, so the commute is very easy. If you need to transfer to the green or pink line, you can do so in the Loop at the Clark/Lake Station (all colors except red) or State/Lake (the red line transfer option).
If you are on a Divvy Bike, you can dock it next to the Ashland Station on N. Ashland Avenue.