Lots of words. To simplify:
0-25'/mile: board flat.
26-50 fpm: rollers a'plenty.
51-75 fpm: bring your climbing shoes.
76-100+ fpm: no doubt about it, you gonna suffa.

To me the most helpful stat is the single worst grade of a section of a climb. I can tolerate suffering, but over, say, a 15% grade, I worry about sustaining neurological impairment.