When you register for a charity or group ride be sure to check the route. Do the roads include a shoulder or bike lane? Are there blind curves? Is there any traffic control for the event?
I say this because there are several charity and event rides that route riders along Paradise Lake Road near Woodinville, WA. In the case of the recent Tour de Cure (for diabetes I believe), the roads were so narrow, we saw several near-misses with oncoming and following traffic. Thousands of bikes flooded that narrow road and tied traffic up in both directions. No ride support at all
Choose your charity ride carefully!