Midnight Sun Marathon is a very unique race. It is organized late June in Tromso, a town in Norway above the arctic circle — because of this the sun does not go down for two months. The race is during the night, but in daylight!
Fen Gallop 10K is a very nice cross-country 10 kilometers long race. It is my favorite one in Cambridgeshire. This run is halfway between a road race and a trail race and the route varies among these things: tarmac, grass, paths, ruts, dirt roads, mud, puddles, fields and wooded areas.
London 10,000 is one of the biggest running races in the UK where more than 12,000 people run in the city center of the British capital. It is organized by the same team who organize the London Marathon — and they did a great job.