The race offers an atmosphere which is both relaxed and welcoming. Around 1,500 runners participate in the marathon and 3,000 in the half marathon, making both races less crowded than is generally the case in larger events. Since the Reykjavik Marathon also includes 10k, fun run and children's run distances, it's also a family event.
Although only around 200,000 people live in the larger Reykjavik area, large crowds gather in the streets to support the runners. However, parts of the course pass through uninhabited areas where there are few spectators, instead of giving the runners a chance to enjoy Iceland's natural environment and the spectacular scenery. The marathon passes through downtown Reykjavik, a residential area, near a salmon river, and along the beach.