fitness treadmill recommendation

[Tovens]

I'd like to purchase a treadmill. I'm a serious runner with kids who can't always get out of the home to train.
My spending limit is $2000.
Is it possible to get a treadmill for under 2000 dollars that will satisfy a serious runner that logs 30-40 kilometers per week? If it's not likely to be achievable, please let me know so I don't waste my time seeking for a treadmill that costs less than 2000 dollars.
Though there is a treadmill out there that meets my demands but costs more than $2000, please feel free to recommend it even if it is out of my price range because I may decide to save my money and buy a treadmill later. Thank you to everyone who has offered suggestions.