Round-the-Island (Huan Dao)

The Round-the-Island (Huan Dao) route offers a demanding 900-kilometer circuit that tests endurance across nine to twelve days, covering 12 of Taiwan's 19 national scenic areas. It's 30% longer than #1's Sun Moon Lake Cycling Path, yet it rewards with a complete coastal panorama from rugged cliffs to tropical beaches. A 2026 upgrade added 70 rest stations and 15% more bike lanes, reducing accident risks by 25% compared to the typical long-distance loop. For perspective, its daily elevation gain averages 600 meters, which is 20% steeper than the standard Round Taiwan route, firmly anchoring it as the nation's most comprehensive cycling challenge.