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Elder Creek Night Run Anza, California, United States

Name: Elder Creek Night Run
Start: 2026-07-25
End: 2026-07-25

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Elder Creek Night Run

Course maps

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9 Miler
13 Miler
30 K
50 K

Foot race | 25 Jul 2026

31.3 mi

Distance

Elevation gain

3,858 ft

Elevation high

3,727 ft

Elevation avg

Trail/Dirt

Elevation loss

3,609 ft

Elevation low

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 4% over 31.3 mi, which means that the energy expenditure for the run is equivalent to running a flat 32.5 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 16 Jul 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
9 Miler	9.0 mi	696 ft	699 ft	3,727 ft	93%	7%	0%	0%
13 Miler	13.4 mi	1,047 ft	1,050 ft	3,727 ft	93%	7%	0%	0%
30 K	17.9 mi	1,398 ft	1,401 ft	3,727 ft	93%	7%	0%	0%
50 K	31.3 mi	2,451 ft	2,454 ft	3,727 ft	93%	7%	0%	0%