From DLP to Coquelles is a little under 200 miles mostly motorway. It can be done comfortably in 3 hours. We had a break for lunch in Assevilliers and were at the Tunnel check-in soon after 3:30. Our scheduled crossing wasn’t until 6:20, but they put us on the 5 o’clock. Just time to browse in Duty Free (didn’t buy anything) then we were called for our train. By 5:15 UK time we were in Ashford booking in to the Premier Inn.