RunRace USA › Fly a Course › Bank of America Chicago Marathon

The course, in 3D

Bank of America Chicago Marathon

Chicago, IL · Sunday, October 11, 2026

Bank of America Chicago Marathon official site →registration and course details
Race day
Sunday, October 11, 2026
Climb
306 fttotal ascent
Race-week weather
51°F to 65°Ften-year normals, 41% of days wet

Fly the course

All 26.2 miles through a model of Chicago built from OpenStreetMap: real building footprints, heights and roof shapes, the water, and the course line itself. Scrub it, switch cameras, or let it play.

Route statusa community trace of the current course; the official certified course is on the race's site. community trace of the current Grant Park loop course

Course line a community trace of the current course; the official certified course is on the race's site. community trace of the current Grant Park loop course Buildings, roads, parks and shorelines are OpenStreetMap, ODbL, so building coverage varies block to block. Public-domain USGS/USDA aerial imagery and USGS 3DEP terrain are served as static site assets; no paid map API runs in the browser. This is photographic terrain with modeled architecture, not photogrammetry. Bridge approaches, elevations and facade details remain approximate. The organizer's published route is the reference.

Accuracy check: drawn line is within 1.7% of the certified 26.2 miles; no part of the line passes through a building; 99% of it sits on a mapped road; closest it ever comes to a building wall is 1.2 m.

Note on bridge grades: Where a course crosses a bridge, the elevation now follows the deck rather than the ground underneath it. A terrain model contains no bridges, so it used to sample the riverbed and report a gorge the runner never descends. Decks are held level between their abutments and never allowed to sag below them; a genuine climb across a long span, like the Golden Gate approach, is left exactly as measured. The camber of a long suspension deck is not modelled, so a bridge that really does rise toward mid-span may read slightly flatter here than it feels.

The elevation profile

540 560 580 600 620 640 660 Mile 0.0 to 0.2: +1.5% Mile 0.2 to 0.4: -0.1% Mile 0.4 to 0.6: -4.1% Mile 0.6 to 0.8: -0.5% Mile 0.8 to 1.0: +0.2% Mile 1.0 to 1.2: -0.6% Mile 1.2 to 1.4: +0.2% Mile 1.4 to 1.6: -0.8% Mile 1.6 to 1.8: -0.5% Mile 1.8 to 2.0: -0.1% Mile 2.0 to 2.2: +0.0% Mile 2.2 to 2.4: +0.0% Mile 2.4 to 2.6: -0.0% Mile 2.6 to 2.8: +0.0% Mile 2.8 to 3.0: -1.0% Mile 3.0 to 3.2: +0.3% Mile 3.2 to 3.4: +0.0% Mile 3.4 to 3.6: -0.0% Mile 3.6 to 3.8: +0.1% Mile 3.8 to 4.0: -0.0% Mile 4.0 to 4.2: +0.2% Mile 4.2 to 4.4: +0.1% Mile 4.4 to 4.6: +0.0% Mile 4.6 to 4.8: -0.1% Mile 4.8 to 5.0: +0.1% Mile 5.0 to 5.2: -0.1% Mile 5.2 to 5.4: -0.2% Mile 5.4 to 5.6: +0.2% Mile 5.6 to 5.8: -0.2% Mile 5.8 to 6.0: -0.4% Mile 6.0 to 6.2: +0.4% Mile 6.2 to 6.4: +0.5% Mile 6.4 to 6.6: -0.2% Mile 6.6 to 6.8: -0.1% Mile 6.8 to 7.0: +0.0% Mile 7.0 to 7.2: -0.1% Mile 7.2 to 7.4: +0.2% Mile 7.4 to 7.6: +0.1% Mile 7.6 to 7.8: +0.0% Mile 7.8 to 8.0: +0.0% Mile 8.0 to 8.2: +0.1% Mile 8.2 to 8.4: -0.0% Mile 8.4 to 8.6: +0.0% Mile 8.6 to 8.8: +0.1% Mile 8.8 to 9.0: -0.1% Mile 9.0 to 9.2: -0.0% Mile 9.2 to 9.4: +0.3% Mile 9.4 to 9.6: +0.2% Mile 9.6 to 9.8: +0.1% Mile 9.8 to 10.0: +0.1% Mile 10.0 to 10.2: +0.1% Mile 10.2 to 10.4: -0.1% Mile 10.4 to 10.6: -0.2% Mile 10.6 to 10.8: -0.1% Mile 10.8 to 11.0: -0.1% Mile 11.0 to 11.2: +0.2% Mile 11.2 to 11.4: -0.2% Mile 11.4 to 11.6: -0.1% Mile 11.6 to 11.8: -0.0% Mile 11.8 to 12.0: -0.0% Mile 12.0 to 12.2: +0.0% Mile 12.2 to 12.4: -0.0% Mile 12.4 to 12.6: +0.0% Mile 12.6 to 12.8: -0.6% Mile 12.8 to 13.0: +0.8% Mile 13.0 to 13.2: +0.1% Mile 13.2 to 13.4: +0.2% Mile 13.4 to 13.6: -0.1% Mile 13.6 to 13.8: -0.9% Mile 13.8 to 14.0: -0.0% Mile 14.0 to 14.2: +0.1% Mile 14.2 to 14.4: +0.1% Mile 14.4 to 14.6: -0.0% Mile 14.6 to 14.8: +0.0% Mile 14.8 to 15.0: +0.0% Mile 15.0 to 15.2: -0.0% Mile 15.2 to 15.4: +0.0% Mile 15.4 to 15.6: -0.1% Mile 15.6 to 15.8: +0.0% Mile 15.8 to 16.0: +0.0% Mile 16.0 to 16.2: +0.0% Mile 16.2 to 16.4: -0.0% Mile 16.4 to 16.6: +0.1% Mile 16.6 to 16.8: +0.0% Mile 16.8 to 17.0: -0.0% Mile 17.0 to 17.2: -0.5% Mile 17.2 to 17.4: +0.5% Mile 17.4 to 17.6: -0.0% Mile 17.6 to 17.8: -0.0% Mile 17.8 to 18.0: -0.0% Mile 18.0 to 18.2: +0.0% Mile 18.2 to 18.4: -0.0% Mile 18.4 to 18.6: -0.0% Mile 18.6 to 18.8: -0.0% Mile 18.8 to 19.0: +0.3% Mile 19.0 to 19.2: -0.1% Mile 19.2 to 19.4: +0.0% Mile 19.4 to 19.6: +0.0% Mile 19.6 to 19.8: -0.0% Mile 19.8 to 20.0: +0.0% Mile 20.0 to 20.2: -0.1% Mile 20.2 to 20.4: -0.1% Mile 20.4 to 20.6: +0.1% Mile 20.6 to 20.8: -0.1% Mile 20.8 to 21.0: +0.2% Mile 21.0 to 21.2: -0.1% Mile 21.2 to 21.4: +0.0% Mile 21.4 to 21.6: -0.0% Mile 21.6 to 21.8: -0.5% Mile 21.8 to 22.0: -0.3% Mile 22.0 to 22.2: +0.1% Mile 22.2 to 22.4: +0.1% Mile 22.4 to 22.6: +0.1% Mile 22.6 to 22.8: +0.1% Mile 22.8 to 23.0: -0.1% Mile 23.0 to 23.2: -0.2% Mile 23.2 to 23.4: +0.1% Mile 23.4 to 23.6: +0.1% Mile 23.6 to 23.8: +0.0% Mile 23.8 to 24.0: -0.1% Mile 24.0 to 24.2: -0.1% Mile 24.2 to 24.4: -0.2% Mile 24.4 to 24.6: +0.3% Mile 24.6 to 24.8: -0.0% Mile 24.8 to 25.0: -0.1% Mile 25.0 to 25.2: +0.0% Mile 25.2 to 25.4: +0.1% Mile 25.4 to 25.6: -0.1% Mile 25.6 to 25.8: +0.1% Mile 25.8 to 26.0: +0.6% Mile 26.0 to 26.2: -0.8% 5 10 15 20 25 mile
steep up up flat down steep down

306 feet of total climb across the 26.2, between 582 and 602 feet of elevation. Click the profile to jump the flythrough to that mile.

Mile by mile

Every mile of the course on the same vertical scale, so they compare at a glance. Net is what the mile does to your elevation; steepest fifth is the sharpest continuous fifth of a mile inside it, the same unit the colour strip above uses.

MileShapeNetElevation Steepest fifthStreetsTurns
1-5 ft596 ft-3.4%North Columbus Drive, East Grand Avenue, North Upper Columbus Drivesharp left onto South Columbus Drive; right; left; right; slight right; sharp le
2-4 ft593 ft-0.8%North Dearborn Street, North State Street, East Grand Avenueleft; left; left; right; right; left; slight left; right; left; right; left
3-10 ft582 ft-1.0%North LaSalle Street, South LaSalle Street, South Dearborn Streetleft; right; right; left; right
4+4 ft594 ft+0.3%North LaSalle Drive
5+2 ft596 ft+0.2%North LaSalle Drive, North Stockton Drive, West LaSalle Driveleft; slight left; left; right; right; right; right; left onto North Stockton Dr
6-12 ft584 ft-0.4%North Stockton Drive, West Fullerton Parkway, North Cannon Driveright; left; left; right onto North Stockton Drive; right; left; left; left; rig
7+6 ft590 ft+0.5%North Sheridan Road, North Cannon Drive, North Lake Shore Driveleft; left; left; left; right onto North Inner Lake Shore Drive
8+2 ft591 ft+0.2%North Lake Shore Drive, West Sheridan Roadleft onto West Aldine Avenue; right; left; right; left onto West Sheridan Road;
9+2 ft592 ft+0.1%North Broadway, West Sheridan Roadleft; right; left
10+9 ft601 ft+0.3%North Clark Street, North Broadwayright; left onto North Broadway; slight left onto North Clark Street; right; lef
11-5 ft595 ft-0.2%North Sedgwick Street, North Clark Streetright; slight left; right; right; right
12-2 ft593 ft-0.2%North Wells Street, West North Avenueright onto West North Avenue, IL 64; left onto North Sedgwick Street; left; righ
13+1 ft595 ft+0.7%North Wells Street, West Upper Wacker Driveleft; left; right onto North Wells Street; right; right
14-1 ft593 ft-1.1%West Adams Street, North Upper Wacker Drive, South Wacker Driveright; left; right onto West Adams Street, HR 66; right; left
15+2 ft595 ft+0.1%West Adams Streetleft; left; right; left; right; left; right; left
16-1 ft593 ft-0.1%West Adams Street, West Jackson Boulevard, South Damen Avenueright; left; right; left; left; left
17+0 ft594 ft+0.1%West Jackson Boulevardright; left
180 ft593 ft+0.5%South Halsted Street, West Taylor Street, West Jackson Boulevardslight right; right; slight right; slight left; right; slight left; left; right
190 ft593 ft+0.0%South Loomis Street, West Taylor Streetslight left; left
200 ft591 ft-0.1%West 18th Street, South Halsted Street, South Loomis Streetright; sharp left; right; sharp right; sharp left; right
21+1 ft593 ft+0.7%West Cermak Road, South Canalport Avenue, South Halsted Streetleft; left; right onto West 21st Street; onto West 21st Street; onto West 21st S
22+0 ft593 ft-0.4%South Wentworth Avenue, West Cermak Road, West 26th Streetright; right; right; right; right; left; left; right; left; right; left; right;
23+3 ft596 ft+0.1%South Michigan Avenue, East 26th Street, West 26th Streetright
240 ft596 ft-0.2%South Indiana Avenue, South Michigan Avenue, East 35th Streetleft; right onto South Michigan Avenue; left; left onto South Indiana Avenue; ri
25-3 ft593 ft-0.2%South Michigan Avenue
26+12 ft605 ft+1.0%South Michigan Avenue, South Columbus Drive, East Roosevelt Roadleft; right; right; left; left onto East Roosevelt Road; left; right onto East R

The course on a map

1 5 10 13 15 20 25 26

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Bank of America Chicago Marathon planning

Open the complete race guide: course, hotels, expo, spectators and the city.

Course geometry a community trace of the current course; the official certified course is on the race's site. City geometry is OpenStreetMap, ODbL. Weather normals are ten years of Open-Meteo reanalysis around race day at the start line. Confirm dates and registration on the official site. Spot an error? Tell us and we'll fix it fast.