Time Trial / Time Trialling / TT

How much of that is same as the E2/30 course?
That was fast for me last year - I would've got my 25mi club record on it (if it was a 25).

Is the E2/10 the same?

Largely the same course - up and down the A14/A11. The start/finish for the 50 is at Six Mile Bottom (oooo er) rather than Newmarket, and you don't do the A1303 bit at the end, but instead do the southern part of the course twice.

The E2/10 is essentially the southern part of the E2/50 course that you end up doing twice on the E2/50.