In reply to PCD:
http://utmbmontblanc.com/en/page/17/qualifying-races.html
The ballot opens in December, so if you want to enter for 2018, you will need to qualify before Xmas. Plenty of races still to run between now and then, although you might be pushing it if you want to get enough to enter the big one. CCC and TDS need 8 points, OCC 4 points, which should still be possible before then.
Post edited at 15:55