Riding speed
I rode my first club ride this week and the posted speed was 12 - 15 average, but we did 26 miles at an average of 15.5mph. If I wasn't in shape I don't think I would have been able to keep up. They do have a no drop policy at this level which they may have for your ride. Try it you can only get better. The average speed covers the whole ride up and down hills. ECB1