curves on the California Western Railroad climbing the coast range east of Fort Bragg, California The Cantara Loops between Dunsmuir, California, and Mount Shasta, California. "N+122°16'53.7"W/@41.2603058,-122.2860363 Map Chorro, California on the grade from San Luis Obispo to Cuesta Pass, a route owned by the Union Pacific Railroad and used by Amtrak's Coast Starlight (Los Angeles to Seattle). Colorado Big Ten Curve; at the foot of the Front Range west of Arvada; Union Pacific (originally D&SL). Fir Loop; near the summit of La Veta Pass; San Luis and Rio Grande Railroad (originally D&RG). Horseshoe curves were used extensively on the many narrow gauge railroads in the Colorado Rocky Mountains, now mostly abandoned, for example: On the Cumbres and Toltec Scenic Railroad (formerly D&RGW); gauge: Coxo Curve; Cumbres, Colorado Tanglefoot Curve; Cumbres, Colorado Los Pinos Curve; Los Pinos, Colorado Phantom Curve; Sublette, New Mexico Whiplash Curve; Big Horn, Colorado Lava Loop; Lava, Colorado Ophir Loop; Ophir, Colorado; Rio Grande Southern Railroad – gauge (abandoned) Altura Curve; Altura, Colorado; Rio Grande, Pagosa and Northern; gauge (abandoned) On the Uintah Railway; gauge (abandoned): 66° curve; Moro Castle, Colorado; Balloon Loop; Columbine, Colorado Hairpin Curve and Muleshoe Curve; McAndrews, Colorado Idaho Horseshoe Tunnel, south of Culdesac, Idaho on the Camas Prairie Railroad. Maryland Helmstetter's Curve; Corriganville, Maryland, between Cumberland and Frostburg, Maryland, at Cash Valley Road; former Western Maryland Railway Connellsville Extension, now the Western Maryland Scenic Railroad. Montana Vendome Loop; 9 miles west of Whitehall on the eastern approach to Pipestone Pass; Milwaukee Road (abandoned 1980). Nevada Arnold Loop; on the eastern approach to Silver Zone Pass in the Toano Range in eastern Nevada; Union Pacific (formerly Western Pacific). New York Swain, New York; Pittsburg, Shawmut, & Northern Railroad (abandoned) Richburg, New York; Pittsburg, Shawmut, & Northern Railroad (abandoned) Oregon East of Oakridge on the Cascade Line. Utah Gilluly Loops, a double horeshoe west of Soldier Summit, Utah; Union Pacific (formerly D&RGW). Washington Foss Creek, between Skykomish and the Cascade Tunnel. Canada British Columbia Notch Hill, on CP's Shuswap Sub near Salmon Arm, British Columbia. Asia China Jiangsu In the urban area of Nanjing, China, a horseshoe connects the railway between the Zhonghuamen and Xuanwu Lake, which belongs to the Nanjing-Wuhu Railway. Shaanxi Baoji-Chengdu Railway Guanyin hill Curve, on Baoji-Chengdu Railway in China, a double horseshoe and a buttrtfly curve, south of Weibin District, at Majia Dam Curve. Sichuan Chengdu–Kunming Railway Naituo Curve, aishiyan