1. Almost immediately after posting a ride to Strava, it gets sent to the NBC website (if Strava and the NBC are playing nice). You will know the ride made it to the NBC site if it shows up on your calendar. It can take hours and hours for it to propagate through all the other calculations. Please be patient. If they are not playing nice, then on Saturday, the NBC does a pull to catch any rides that didn't get sent when Strava burped. If this still is not sorted out, read about "Fetch" in #2.
2. If you edit a ride in Strava, it does not affect what is posted in the NBC. If you make changes to a ride in Strava, you have to delete the ride in the NBC site (Click on your picture in upper right corner, select "Settings" from drop down menu, then select "Rides" from the list on the left. Read the on screen instructions carefully.) First delete bad rides, then Fetch fixed rides. Please be patient.
3. Leaderboards close at midnight Central time on the last day of the leaderboard period. So the August Leaderboard closes at midnight CST on 8/31. Once a leaderboard closes, any changes a rider makes to their rides will have no effect on the closed leaderboard. ANY Changes made before midnight CST on 9/30 WILL affect the Challenge Leaderboard (May 1 through September 30). And ANY Changes made before midnight CST on 12/31 WILL affect the Year Leaderboard(Jan 1 through December 31). (This means that the sum of the monthly leaderboards may be less than the total for the Challenge/Year Leaderboards.)
4. It is still advantageous to recruit riders as their rides will be treated as changed rides in Point 3. When a new rider joins the Challenge, the NBC grabs the data from the last 200 Activities in Strava, and those marked as "Ride" will be included in the Challenge.
5. A riders NBC mileage total should equal their Strava total. If it is less for some reason, no one will care. But woe to the rider whose NBC total exceeds their Strava total. If that rider is high in the standings, they will be noticed, shunned, and the bad karma will lead to mechanical misfortunes will plague their rides. There is time to fix past mistakes for the Challenge Leaderboard, and the Year Leaderboard.
6. To earn a Century badge, the ride must be 100 miles or more. If you submit two rides for a day that exceed 100 miles, the system will not award the Century Badge.
7. The site is normalized to central time. This means if it is after midnight in Chicago when you ride, It will show up on the next day. Manually log a ride of one mile on the correct day in Strava.