taroko, Taiwan 
To Be Confirmed
The Taroko Gorge Marathon is annually held at the Taroko National Park, in Hualien County and is organized by the Chinese Taipei Road Running Association. This marathon offers two racecourses, a full and half marathon. The marathon is held in November and in 2011 there were about 10,500 runners, with both of the races combined. If you wish to participate you must make sure to reserve your spot with anticipation because the spots usually sell out within a week or two.
