This list of longest natural arches ranks the world's natural arches by the length of their span as defined and measured by the Natural Arch and Bridge Society (NABS).

As a disclaimer, the NABS states that the information in this list, and therefore the rankings, may change due to more accurate measurements in the future, changes in span length due to natural forces, and the discovery of previously undocumented arches.

Longest natural arches All known natural arches with span lengths of or greater are included in the list. Sort by clicking on column headings, excepting only the Image and Notes columns.

Rank Image Name Span (m) Span (ft) Notes 1 Xianren Bridge (Fairy Bridge) China, Guangxi, Buliu River 121.9 400 Span measured by Natural Arch and Bridge Society (NABS) in 2010. The accuracy is stated as within ±. 2 Zhijin Natural Bridge China, Guizhou, Zhijin Cave Scenic Area 103.6 340 Span measured by NABS, 2015. 3 Jiangzhou Natural Bridge China, Guangxi, Jiangzhou 94.5 310 Span measured by NABS, 2010. Estimates range from to , so the midpoint is listed, ± which includes a ± accuracy above/below the higher/lower estimate. Jiangzhou ranks somewhere between 2nd and 6th position based on current estimates. 4 external image Dachuandong Arch China, Guizhou, Si Lian 91.4 300 Span measured by NABS, 2015. 5 Landscape Arch United States, Utah, Arches National Park 88.4 290 Span measured by NABS, 2004. 6 Kolob Arch United States, Utah, Zion National Park 87.5 287 Span measured by NABS, 2006. Formerly considered longer than Landscape Arch. 7 external image Qingxudong Arch China, Guizhou, Dafang 76.5 251 Span measured by NABS, 2015. 8 Aloba Arch Chad, Ennedi-Ouest Region, Ennedi Plateau 76.2 250 Rank based on estimated span length only. Precise measurements have yet to be made according to NABS standards. 9 Morning Glory Natural Bridge United States, Utah, Grandstaff Canyon 74.1 243 Span measured by NABS, year not specified. Morning Glory is a natural arch, not a natural bridge."Feature Detail Report for: Morning Glory Arch". geonames.usgs.gov. United States Geological Survey. February 25, 1989. Retrieved November 28, 2017. 10 external image Gaotun Natural Bridge China, Guizhou, Gaotun 73.2 240 Span measured by NABS, 2010. 11 Rainbow Bridge United States, Utah, Glen Canyon National Recreation Area 71.3 234 Span measured by NABS, 2007. Formerly considered the 3rd longest span in the world. 12 external image Great Arch of Getu China, Guizhou, Getu Valley National Park 70.1 230 Span measured by NABS, 2013 and 2015. 13 Sipapu Natural Bridge United States, Utah, Natural Bridges National Monument 68.6 225 Span measured by NABS, 2007. Formerly considered the 4th longest span in the world. 14 Stevens Arch United States, Utah, Canyons of the Escalante 67.1 220 Rank based on estimated span length only. Precise measurements have yet to be made according to NABS standards. 15 Shipton's Arch China, Xinjiang, K'ashih 65.2 214 Discovered by Eric Shipton in 1947 and measured in 2000 by a National Geographic Society-sponsored expedition. 16 external image Yunmentum Natural Bridge China, Guizhou, Zunyi 64.9 213 Span measured by NABS, 2013. 17 external image Hazarchishma Natural Bridge Afghanistan, Bamyan Province, Jawzari Canyon 64.3 211 Discovered by the Wildlife Conservation Society in 2010. WCS returned to measure the span according to NABS standards in 2011. 18 external image Outlaw Arch United States, Colorado, Dinosaur National Monument 62.8 206 Discovered by rock climbers in 2006 who returned later in the same year to measure the span according to NABS standards. 19 Snake Bridge United States, New Mexico, Sanostee 62.2 204 Span measured by NABS, 1988. Arch is on land of the Navajo Nation and is not publicly accessible. 20 Pont d'Arc France, Ardèche département 59 194 Spans the river Ardèche near the town of Vallon-Pont-d'Arc. 21 Kachina Bridge United States, Utah, Natural Bridges National Monument 58.2 192 Span measured by NABS, 2007. An earlier non-NABS estimate was . 22 Tianmen Shan China, Hunan Province, Zhangjiajie 55 180 130 m high. Span reported by NABS.entry at naturalarches.org 23 Wrather Arch United States, Arizona, Wrather Canyon 54.9 180 NABS states that the span cannot be more than based on a related measurement made in 2008, though the span has not yet been measured precisely according to NABS standards. An earlier non-NABS estimate was .

See also List of individual rocks

References