MISSOULA, Mont. -

You may have seen several corvettes pass by you as you were driving on Saturday.

They're part of the Pacific Northwestern caravan with more than 200 participants traveling across the country. They’re from British Columbia, Washington, Oregon, Idaho, California, Alaska and Montana.

It happens every 5 years and this is the first time it's gone through Montana.

They stopped by the Karl Tyler Chevrolet & Cadillac to have lunch in Missoula.

They're headed to celebrate the National Corvette Museum’s 20th anniversary in Bowling Green, Kentucky, where thousands more will be there to celebrate a groundbreaking ceremony of a $20 million world-class motorsports park.

One woman NBC Montana talked with, says it's been on her bucket list to go on a trip like this. She's traveling with her 1996 convertible Corvette.

"It's an experience where you have to pinch yourself to believe it. You can't believe that you've got one thing in common and that's a car and that's just what's bringing us all together, the corvette," said Marj Bowen, from British Columbia.

Their next stop is Bozeman, Montana where they will have dinner. NBC Montana was told that the trip all together is about 5,000 miles and takes 21 days. Click here to learn more.