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JD Ultra-Trail Great Wall by UTMB Zhangjiakou, Hebei, China

Name: JD Ultra-Trail Great Wall by UTMB
Start: 2026-09-11
End: 2026-09-13

This has already taken place.Click here to go to the 2027-09-10 event.

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JD Ultra-Trail Great Wall by UTMB

Course maps

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Route source

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NGW30
MGW50
CGW70
DGW100

Foot race | 13 Sep 2026

19.2 mi

Distance

Elevation gain

3,809 ft

Elevation high

3,258 ft

Elevation avg

Unspecified surface

Elevation loss

2,605 ft

Elevation low

25%

Climb factor

What is climb factor?

The climb factor for a course is the percentage of your energy used in hill-climbing compared to the energy expended running the flats.

This course has a climb factor of 25% over 19.2 mi, which means that the energy expenditure for the run is equivalent to running a flat 24.1 mi.

Climb factor is provided courtesy of Ben Crowell, who both authored climb factor's scientific paper and wrote the open source software for it. You can read more about it here .

Course last updated 10 Oct 2026

All values approximate

Distance & elevation data

The distance or elevation data not precisely what you expect for this route?

Data from a GPS device can be rough, especially in areas where the terrain (trees, canyons) interfere with GPS signals. And routes drawn on our maps are reliant on people marking trails from satellite images -- the details of which can be hidden by trees.

Elevation can be tricky too. Elevation data is stored on spaced topographical lines, and determining the elevation of a point requires computers to estimate based on how close the point is to the topographical line.

We mitigate this by calculating distance in 3-D (think Pythagorean theorem) and using mathematical techiniques to smooth the elevation data. We come close, but no one can be perfect with imperfect data, even in 2026.

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Stats summary

Race distance	Distance	Ele gain	Ele loss	Ele avg	Paved	Gravel	Dirt	Narrow
NGW30	19.2 mi	4,436 ft	4,436 ft	3,258 ft	100%	0%	0%	0%
MGW50	32.5 mi	6,345 ft	6,345 ft	3,530 ft	100%	0%	0%	0%
CGW70	42.7 mi	8,133 ft	8,133 ft	3,478 ft	100%	0%	0%	0%
DGW100	62.1 mi	11,870 ft	11,870 ft	3,684 ft	100%	0%	0%	0%