Republican Colorado Congresswoman Lauren Boebert wrote herself two checks totalling more than $22,000 to compensate herself for mileage driven during the 2020 campaign despite the fact that she held only one public event from April through July, the Denver Post reports.

At the IRS-maximum allowed reimbursement of 57.5¢ per mile, that means Boebert would have had to travel nearly 39,000 miles on campaign business.  Her predecessor in office, Republican Scott Tipton, had mileage reimbursement of just $9,575 during his entire ten-years in office.

“This highly unusual amount of mileage expenses raises red flags and the campaign should feel obligated to provide answers,” Kedric Payne, a former investigator for the Office of Congressional Ethics, an independent body in Congress that examines misconduct allegations, told the Denver Post.

Boebert’s 3rd Congressional District in Colorado spans the entire distance between the state’s southern and northern borders, which are 380 miles apart.  Boebert would have had to drive from one border to another, a drive of eight hours, every day for 100 days to merit that amount of reimbursement.

For comparison, Republican Congressman Dan Young of Alaska, the only member of the House from the largest state in the nation, reimbursed himself $9,965 for all travel–including air travel–during the last campaign.

The checks, signed by Boebert herself, were for $1,060, dated at the end of March and a second for $21,200, dated on November 11th.