A massive park in the middle of the city, Mansarovar Park in Rohtak is where you'd want to go for a jog or a run. You'll even find a public fitness centre where you can get your workout on. It's got benches all over if you'd just like to take in the sun and clean washrooms as well. There's a section with all the swings as well, if you've got kids tagging along with you and even a public library—so cool!
Go here in the morning to avoid big crowds.