Orienteering Control Descriptions and Map Symbols Explained

Romanian Mountains Running Races

 

Drumetii

 

Stretching - Incalzirea dinamica inainte de alergare

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Traseu	GPX	Distance, km	Elevation Gain, m	KM-Effort	Runnable %	Avg Grade	Max Grade
runmd Volvo Cross		10.9	342	14.3
runmd Volvo Semi 25km		25.1	825	33.4
				0.0
				0.0
				0.0
Balanesti		24.1	722	31.3	91	5% (3°)	24% (14°)
Butuceni		15.8	423	20.0	94	4% (2°)	27% (17°)
Border Marathon, semi		21.6	283	24.4
Border Marathon, marathon		43.7	587	49.6
Dragonul de aur, marathon		43.3	1054	53.8	97	3% (2°)	31% (17°)
Dragonul de aur, semi		20.9	573	26.6	97	3% (2°)	14% (8°)
				0.0
Molovata Noua		21.3	370	25.0	97	3% (2°)	20% (11°)
				0.0
Linia Nemtilor 25		23.9	684	30.7	93	4% (3°)	27% (15°)
EcoRun Hincesti Semi		21	694	27.9
EcoRun Nisporeni Semi		24.6	839	33.0
runmd DOR-Semi		21.61	446	26.1
Barcelona marathon 2021		42.82	688	49.7
Chisinau marathon 2021		42.92	871	51.6
Codru Ultra Trail, Donici, 30k		30.4	722	37.6	94	4% (2°)	19% (11°)
Codru Ultra Trail, Donici, 50k		53.7	1491	68.6
Codru Ultra Trail, Donici, 70k		73.4	2085	94.3	93	4% (2°)	22% (12°)
Codru Ultra Trail, Donici, 100k		96.1	2860	124.7	93	4% (2°)	30% (17°)
runmd Dante Hell, 54k , 8 circles		55.2	1171	66.9
Bucovina Ultra Rocks, 33k		33.2	1881	52.0	77	10% (6°)	61% (32°)
Bucovina Ultra Rocks, 48k		48.1	3122	79.3
Bucovina Ultra Rocks, 88k		83.7	5554	139.2
Bucovina Ultra Rocks, 110k		105.6	6782	173.4
Bucovina Ultra Rocks, 180k		177.4	9614	273.5
Ultra X Azores - 50k		49.8	2877	78.6	78	10% (6°)	55% (29°)
UTMB Mont Blanc chamonix 42km		45.4	2488	70.3	75	12% (7°)	78% (38°)
UTMB		169.2	10073	269.9	74	12% (7°)	74% (36°)
UTMB vers2		169.7	10396	273.7

MD Slopes

 https://caltopo.com/map.html#ll=47.33334,28.96526&z=14&b=om&a=sg

Elevation gain comparison

https://alpinegeek.com/which-gps-app-is-most-accurate/

Example track: https://bucovinaultra.rocks/rocky-33k/

App	Distance (KM)	Gain (m)	Range
official	33.24	1968	676-1965
trailrunproject
caltopo.com	30.54	2063	679-1632
Alltrails	30.57	1866
GaiaGPS	30.4	1384	692-1626
Strava	30.53	1763
Amazfit ZEPP	30.64	1718	707-1593

For digital maps or even recorded tracks, the location of each waypoint is usually compared to a digital elevation model (DEM) to determine the total elevation gain and loss along the line. Two major factors will affect the total: sampling interval and the model itself. The gpx file itself does not contain the elevation data. (While it's possible for a gpx file to carry that information, most companies do not include that information when exporting a track and prefer to use their own DEM to determine it within the program. This is a persistent topic in support forums for digital map/track providers because some do include it in the track and some don't. For the record, we don't.)

The DEM model itself could be based on different data sources - for example there could be a LIDAR data source built into the model, which would make for a higher degree of real-world accuracy in the model. LIDAR data is expensive and hard to come by for many areas of the country/world though, so it's not always included. Another factor here is that the accuracy of a recorded gpx track may not match the accuracy level of the underlying source of elevation data (it's possible that it is much less accurate.)

Then you factor in the sampling interval when the elevation for the line is being calculated. This usually depends on the length of the line and how many waypoints are included in the line. The program doing the calculating may sample at every point, or every 50 or 100ft, or some other number that seems random but is based on various factors that I won't get into. The point is, the reported elevation change over the line can and will change depending on the sampling interval. Sampling at every point can introduce a lot of noise and make the total artificially high, while sampling too little could theoretically make it way too low. In the CalTopo terrain stats, you can resample the line at various intervals and see how the total elevation changes. Some info about terrain stats is at https://training.caltopo.com/all_users/objects/existing-lines#terrain

In your track specifically, the total is higher than the absolute number between low point and high point because you go over some smaller ups-and-downs along the route, each of which contributes to the total reported gain.

source: https://help.caltopo.com/discussions/bugs/5670-incorrect-elevation-change-in-profile-view