In the mountains of Colorado, a 40-acre estate fit for a Kentucky Derby thoroughbred is hitting the market for $25 million.

About two years ago, Gus King, a racehorse owner and founder of an Alabama-based flexible packaging company, bought the property in Longmont, a city around 15 miles northeast of Boulder along the Front Range portion of the Rocky Mountains.

He and his wife, Tobie King, purchased the limited-liability company that owned the estate in 2023 for $10 million, according to their daughter, Jenna King. The LLC had purchased the property in 2013 for $4.25 million, according to current listing agent Zach Zeldner with Compass.

The property boasts mountain views, including the popular Flatirons rock formations.

Gus, 77, is the owner of the racehorse Publisher, which came in 14th place in this year’s Kentucky Derby. He became interested in horse racing around 20 years ago following the death of his son.

“It’s something of a bond we shared that’s helped me stay in touch with him since he passed,” he said.

The Kings, who are based in Alabama, bought the property to be closer to their daughter who was going to law school in Boulder at the time.

The property has a roughly 10,000-square-foot home, a 4,950-square-foot traditional barn to house things like equipment and horses, and a 4,658-square-foot converted barn with event spaces, a kitchenette and a loft.

On the grounds, there is a pool, a tennis court, around a mile of walking trails, an outdoor kitchen and a pasture. There is also a seasonal pond that is typically full from May through September. A parking lot surrounded by trees can hold upward of 50 cars.

“I’ve never seen the sun hit the clouds like I’ve seen at that property, ” Gus said. “The sun turns the clouds golden there.”

Jenna, 33, lived on the property for about a year with her family, according to Gus. They then moved to the city of Steamboat Springs, and then Gus and Tobie spent the past year gut renovating the six-bedroom main house, which includes an attached one-bedroom apartment. Gus said they swapped the main home’s multicolored walls for a monochromatic palette and replaced zebra-print carpets and stone flooring with white oak.

He and Tobie visit the home at least once a quarter. “I don’t really like to take time off work,” Gus said. “This pulled me away a little bit. If you ask anyone who knows me, that’s something.”

The renovated home has a modern interior.

The house features exposed beams.

Gus said he considered eventually retiring his horse Publisher at the estate, but he decided to sell the property instead because he and Tobie want to be closer to their daughter and grandchildren in Steamboat Springs, which is about 190 miles from Longmont.

He is considering naming another racehorse he recently purchased after the property’s street, St. Vrain, said Jenna.

There have been three home sales for $10 million or more since October 2024 in Boulder County, which includes Longmont, according to Zeldner. If the Kings’ home sells at or near its asking price, it will set a home sale record for Boulder County. That title is currently held by a home in the city of Boulder that sold for $14.5 million earlier this year.