seamless registration process and email updates prior to the race. Easy to get to and the park is vast so you aren't overcrowded. Everyone has colour and start times but it became very crowded very quickly in the pens and there seemed to be more chat from commentary than releasing the starts. My youngest daughter as a result started to get too hot and have a panic attack but you also couldn't get out easily due to the safely barriers. I think more consideration could have been made when you know lots of young children would be doing the race. The race in self was nice, all closed roads and always great to finish in front of Buckingham palace. Your times are text to you straight away so I got my time before I got my medal. There were lots of activities to do in green park if you wanted to and lots of spectators cheering you on.