Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Climbs
2 climbs · 1,108 ft totalbiggest firstElevation gain, measured two ways
| Source | Gain | vs lidar |
|---|---|---|
| Course file (GPX) | 2,369ft | +48% |
| USGS lidar, 1 m | 1,603ft | reference |
They differ because a GPS file picks up noise on every wiggle and often takes its heights from a coarse terrain model, while lidar maps the ground itself to about a metre. We sampled this route every 98 ft against USGS 3DEP and counted each rise of 10 ft or more, on Oct 23, 2026. The planner still uses the course file.
Race almanac the sky on race day
Next race day Sat, Dec 12, 2026
First and last light are civil twilight, the sun 6° below the horizon. The moon is lit as at midnight after the start; headlamp hours count a typical finish from the start while the sun is below civil twilight. Worked out for the start line.
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About this course
Helen Holiday Half Marathon covers 11.8 mi (19.0 km) with 2,369 ft of elevation gain through Georgia, United States. That is about 200 ft per mile of climbing, and 2,373 ft of descent. The course tops out at 2,692 ft and bottoms out at 1,542 ft. The surface is 66% trail, 30% paved and 4% gravel. The profile has 2 sustained climbs; the biggest is the climb from mi 1.1, +654 ft over 3.4 mi at 3.6% on average (steepest stretch 21%). The interactive map above shows the full route with its elevation profile and aid stations, built from the course's GPS file.
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Course history
- Jul 22, 2026Added to the catalog
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