At the end of June, we ran Broløbet - a race spanning the Øresund Bridge between Denmark and Sweden. It was the last time the race was going to be held so we decided to take advantage of an opportunity to cross the bridge on foot (normally the Øresund is only open to vehicular traffic). Since the entire distance of the race is a half-marathon (21.2 km), we divided the race up so that we each did roughly half of the distance.
The coordination involved for this race is pretty impressive. About 10,000 people participated, about half coming from each side of the bridge (Copenhagen and Malmö). For this they had two seperate registration centres and buses shuttling all the runners to the starting point. In addition, about 500 people were running the race as a relay so buses had to be coordinated to shuttle second leg runners to the halfway point and pick up the first leg relay runners from the halfway point to bring them to the finish line. On top of all this they had to close down a lane of traffic on the bridge and section off the rest of the course.
To see pictures and how we did in the race, check out www.broloppet.com.