Burlington topographic map

Name: Burlington topographic map, elevation, terrain.

Location: Burlington, Des Moines County, Iowa, 52601, United States (40.76095 -91.18026 40.84766 -91.07838)

Average elevation: 600 ft

Minimum elevation: 505 ft

Maximum elevation: 719 ft

Burlington hosts the Snake Alley Criterium, one of the most physically challenging races in the Midwest. The annual event is held on a 15-block course, with differences in elevation from 555 feet to 678 feet. The course is entirely on city streets, mostly in the downtown commercial area. A one-block-long climb is on the historic brick street named Snake Alley. The 276-foot-long Snake Alley has five switchbacks in a 60-foot climb. The average grade is 12.5 percent in that one block.

Wikipedia (CC-BY-SA 3.0)