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The course, in 3D

The Marathon Project

Chandler, AZ · Saturday, December 12, 2026

The Marathon Project official site →registration and course details
Race day
Saturday, December 12, 2026
Climb
143 fttotal ascent
Race-week weather
43°F to 68°Ften-year normals, 8% of days wet

Fly the course

All 26.2 miles through a model of Chandler 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 statustraced from the course file the race itself publishes. official timing partner's embedded course geometry, 26.2 mi loop course

Course line traced from the course file the race itself publishes. official timing partner's embedded course geometry, 26.2 mi 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 0.4% of the certified 26.2 miles; no part of the line passes through a building; 100% of it sits on a mapped road.

The elevation profile

1080 1100 1120 1140 1160 1180 Mile 0.0 to 0.2: -0.3% Mile 0.2 to 0.4: +0.2% Mile 0.4 to 0.6: -0.2% Mile 0.6 to 0.8: -0.2% Mile 0.8 to 1.0: -0.2% Mile 1.0 to 1.2: -0.2% Mile 1.2 to 1.4: -0.0% Mile 1.4 to 1.6: +0.3% Mile 1.6 to 1.8: +0.1% Mile 1.8 to 2.0: +0.2% Mile 2.0 to 2.2: +0.1% Mile 2.2 to 2.4: -0.2% Mile 2.4 to 2.6: +0.1% Mile 2.6 to 2.8: -0.1% Mile 2.8 to 3.0: -0.1% Mile 3.0 to 3.2: +0.0% Mile 3.2 to 3.4: -0.1% Mile 3.4 to 3.6: +0.2% Mile 3.6 to 3.8: +0.0% Mile 3.8 to 4.0: +0.1% Mile 4.0 to 4.2: +0.0% 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: -0.2% Mile 5.0 to 5.2: -0.1% Mile 5.2 to 5.4: -0.1% Mile 5.4 to 5.6: -0.2% Mile 5.6 to 5.8: +0.3% Mile 5.8 to 6.0: +0.2% Mile 6.0 to 6.2: +0.1% Mile 6.2 to 6.4: +0.2% Mile 6.4 to 6.6: -0.2% Mile 6.6 to 6.8: +0.0% Mile 6.8 to 7.0: -0.2% Mile 7.0 to 7.2: -0.1% Mile 7.2 to 7.4: +0.0% Mile 7.4 to 7.6: +0.0% Mile 7.6 to 7.8: -0.1% Mile 7.8 to 8.0: +0.0% Mile 8.0 to 8.2: +0.0% Mile 8.2 to 8.4: +0.1% Mile 8.4 to 8.6: +0.2% Mile 8.6 to 8.8: -0.1% Mile 8.8 to 9.0: +0.2% Mile 9.0 to 9.2: -0.2% Mile 9.2 to 9.4: -0.1% Mile 9.4 to 9.6: -0.2% Mile 9.6 to 9.8: -0.2% 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: +0.3% Mile 10.6 to 10.8: +0.1% Mile 10.8 to 11.0: -0.1% Mile 11.0 to 11.2: +0.0% Mile 11.2 to 11.4: -0.0% Mile 11.4 to 11.6: -0.1% Mile 11.6 to 11.8: +0.1% Mile 11.8 to 12.0: -0.2% Mile 12.0 to 12.2: +0.2% Mile 12.2 to 12.4: +0.0% Mile 12.4 to 12.6: +0.1% Mile 12.6 to 12.8: +0.0% Mile 12.8 to 13.0: +0.0% Mile 13.0 to 13.2: +0.1% Mile 13.2 to 13.4: -0.0% Mile 13.4 to 13.6: -0.2% Mile 13.6 to 13.8: -0.1% Mile 13.8 to 14.0: -0.3% Mile 14.0 to 14.2: -0.0% Mile 14.2 to 14.4: +0.2% Mile 14.4 to 14.6: +0.1% Mile 14.6 to 14.8: +0.2% Mile 14.8 to 15.0: +0.1% Mile 15.0 to 15.2: -0.2% Mile 15.2 to 15.4: +0.1% Mile 15.4 to 15.6: -0.2% Mile 15.6 to 15.8: -0.1% 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: +0.0% Mile 16.6 to 16.8: +0.0% Mile 16.8 to 17.0: +0.1% Mile 17.0 to 17.2: +0.2% Mile 17.2 to 17.4: -0.1% Mile 17.4 to 17.6: +0.2% Mile 17.6 to 17.8: -0.3% Mile 17.8 to 18.0: -0.1% Mile 18.0 to 18.2: -0.2% Mile 18.2 to 18.4: -0.3% Mile 18.4 to 18.6: +0.3% Mile 18.6 to 18.8: +0.2% Mile 18.8 to 19.0: +0.1% Mile 19.0 to 19.2: +0.3% Mile 19.2 to 19.4: -0.0% Mile 19.4 to 19.6: -0.1% Mile 19.6 to 19.8: +0.0% Mile 19.8 to 20.0: -0.1% Mile 20.0 to 20.2: -0.1% Mile 20.2 to 20.4: +0.0% Mile 20.4 to 20.6: -0.1% Mile 20.6 to 20.8: +0.2% Mile 20.8 to 21.0: -0.0% Mile 21.0 to 21.2: +0.0% Mile 21.2 to 21.4: +0.1% Mile 21.4 to 21.6: -0.1% Mile 21.6 to 21.8: +0.1% Mile 21.8 to 22.0: -0.1% Mile 22.0 to 22.2: -0.3% Mile 22.2 to 22.4: -0.1% Mile 22.4 to 22.6: -0.2% Mile 22.6 to 22.8: -0.1% Mile 22.8 to 23.0: +0.4% Mile 23.0 to 23.2: +0.1% Mile 23.2 to 23.4: +0.1% Mile 23.4 to 23.6: +0.2% Mile 23.6 to 23.8: -0.2% Mile 23.8 to 24.0: +0.1% Mile 24.0 to 24.2: -0.2% Mile 24.2 to 24.4: -0.1% Mile 24.4 to 24.6: +0.0% Mile 24.6 to 24.8: +0.0% Mile 24.8 to 25.0: -0.0% Mile 25.0 to 25.2: +0.0% Mile 25.2 to 25.4: +0.0% Mile 25.4 to 25.6: +0.1% Mile 25.6 to 25.8: +0.2% Mile 25.8 to 26.0: -0.0% Mile 26.0 to 26.2: +0.3% 5 10 15 20 25 mile
steep up up flat down steep down

143 feet of total climb across the 26.2, between 1133 and 1139 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 fifthStreets
1-6 ft1135 ft+0.3%West South Loop Road, West Wildhorse Pass Road
2+6 ft1140 ft-0.3%West South Loop Road
3-4 ft1137 ft-0.2%West North Loop Road, West South Loop Road, South East Loop Road
4+1 ft1137 ft+0.1%West North Loop Road
5+0 ft1138 ft-0.3%West South Loop Road, South East Loop Road, West North Loop Road
6-1 ft1137 ft+0.3%West South Loop Road
7+1 ft1138 ft-0.2%West South Loop Road, South East Loop Road, West North Loop Road
8-1 ft1137 ft-0.1%West North Loop Road
9+5 ft1142 ft+0.2%West North Loop Road, South East Loop Road, West South Loop Road
10-9 ft1133 ft-0.3%West South Loop Road
11+6 ft1139 ft+0.3%West South Loop Road, South East Loop Road
12-4 ft1135 ft-0.2%West North Loop Road, South East Loop Road
13+5 ft1139 ft+0.2%West North Loop Road, South East Loop Road
14-6 ft1133 ft-0.3%West South Loop Road, South East Loop Road
15+8 ft1141 ft+0.3%West South Loop Road
16-5 ft1137 ft-0.2%West North Loop Road, South East Loop Road, West South Loop Road
17+2 ft1139 ft+0.1%West North Loop Road
18-2 ft1137 ft-0.3%West South Loop Road, South East Loop Road, West North Loop Road
19+1 ft1137 ft-0.3%West South Loop Road
20+0 ft1138 ft+0.3%West South Loop Road, South East Loop Road, West North Loop Road
21-1 ft1137 ft+0.2%West North Loop Road
22+3 ft1140 ft+0.2%West North Loop Road, West South Loop Road, South East Loop Road
23-5 ft1135 ft+0.3%West South Loop Road
24+5 ft1140 ft+0.2%West South Loop Road, South East Loop Road
25-4 ft1137 ft-0.2%West North Loop Road, South East Loop Road
26+2 ft1139 ft+0.2%West North Loop Road, South East Loop Road, West Wildhorse Pass Road

The course on a map

1 5 10 13 15 20 25 26

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The Marathon Project planning

Build the rest of race day around the course you just studied.

Course geometry traced from the course file the race itself publishes. 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.