I think a very long Cribbage board is funny.

The whole 972mm construction is made out of 5 approximately equal parts 200mm in length, and connected by dovetails. Every 5 holes are marked, as well as the 60 point line for shorter games. The 121st point is also marked and overall I am very pleased with the final design.

I have also included a test piece that has only 2 holes to test if the spacing and depth match your needs. I used the standard hole parameters I found online, which were 1/8 inch in diameter and 1/4 inch apart.

16mm x 15.2mm x 972mm when assembled.