Best efforts
  1. b_knutsson 03:03, Nov. 3, 2011
  2. b_knutsson 03:11, June 27, 2015
  3. Samund 03:14, June 21, 2012


GPX File


Trip Duration Avg HR Avg Speed Ascent Power Power (est) Avg power/kg VAM

Velocity Ascended, Metres per hour Vm/h usually referred to as VAM, coined by Dr Michele Ferrari is the speed of elevation gain per hour in Metre per hour. This is a term used in cycling to rate how fast an individual gains elevation while climbing an incline. Ferrari also stated that every one percent increase in average gradient increases VAM by 50. For example, a 1650 VAM on a climb of 8 percent average grade is a performance equivalent to a VAM of 1700 on 9 percent average grade. Ambient conditions (e.g. friction, air resistance) have less effect on steeper slopes (absorb less power) since speeds are lower than on gentler slopes
The acronym VAM is not truly expanded in English, where many think the V stands in some way for vertical, and the M represents meters, for instance "Vertical Ascent Meters/Hour." Ferrari says,
I called this parameter Average Ascent Speed (‘VAM’ in its Italian abbreviation from Velocità Ascensionale Media).
A direct translation of "velocità ascensionale media" is "mean (average) ascent velocity" leading to an expansion of the acronym in English as Velocity, Ascent, Mean.
VAM is calculated the following way: VAM = (metres ascended x 60) / Minutes it took to ascend
A standard unit term with the same meaning is Vm/h, vertical meters per hour; the two are used interchangeably.
The relationship between VAM and relative power output is expressed as follows: [3]
Relative power (Watts/kg) = VAM (meters/hour) / (Gradient factor x 100)
This gradient factor ranges between 2.6 for a gradient of 6% and 3.1 for a gradient of 11%
To work out the gradient factor take 2 + (% grade/10)

Examples:

1800+ Vm/h: Lance Armstrong - and Marco Pantani of olden days
1650-1800 Vm/h: Top 10 / Tour de France GC or mountain stage winner.
1450-1650 Vm/h: Top 20 / Tour de France GC; top 20 on tough mountain stage.
1300-1450 Vm/h: Finishing Tour de France mountain stages in peloton
1100-1300 Vm/h: The Autobus Crew

Comment
b_knutsson Nov. 3, 2011 03:03 92.3% 23.8 km/h 52 m 290.3 W 4.5 1023
b_knutsson June 27, 2015 03:11 90.8% 22.3 km/h 0 m 264 W 76.9 W 4.1
Samund June 21, 2012 03:14 85% 22.4 km/h 60 m 332 W 353.8 W 4.2 1113
b_knutsson June 6, 2012 03:21 84.6% 20.8 km/h 52 m 254.1 W 4.0 931
eivind123 June 7, 2012 03:29 88.6% 21.6 km/h 64 m 328.2 W 4.5 1102
eivind123 May 16, 2012 03:31 85.4% 19.5 km/h 59 m 280.2 W 3.8 1007
lgar May 1, 2012 03:32 89.6% 20.2 km/h 59 m 286.4 W 4.0 1002
oscarlanda June 21, 2012 03:37 19.3 km/h 52 m 0 W 0 863
b_knutsson Nov. 1, 2011 03:47 86.7% 19.2 km/h 22 m 124.8 W 2.0 349
lgar April 20, 2012 03:49 87.4% 18.7 km/h 60 m 266.9 W 3.7 943
eivind123 Sept. 27, 2011 03:50 86.5% 19.0 km/h 60 m 271.5 W 3.7 939
b_knutsson May 26, 2015 03:54 82.6% 18.6 km/h 49 m 207.4 W 3.2 754
b_knutsson April 3, 2015 04:03 83.1% 17.9 km/h 51 m 198.6 W 3.1 756
b_knutsson April 4, 2014 04:08 79.5% 17.5 km/h 49 m 192.8 W 3.0 711
b_knutsson Aug. 29, 2014 04:08 74.4% 17.0 km/h 16 m 88.4 W 1.4 232
eivind123 May 10, 2012 04:10 71.4% 15.9 km/h 61 m 235.5 W 3.2 878
lgar Sept. 27, 2011 04:12 85.2% 17.2 km/h 59 m 235.3 W 3.3 843
john.ulvenes June 10, 2012 04:13 186 bpm 17.0 km/h 49 m 0 W 0 697
eivind123 March 30, 2012 04:14 71.9% 16.5 km/h 61 m 236.8 W 3.2 865
john.ulvenes May 26, 2013 04:15 181 bpm 16.8 km/h 49 m 0 W 0 692
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