Monday, 20 April 2009

Statto's (revised) Hill-ranking Table

Now based on SportTracks and using its elevation correction plug-in. I think the average metres gained/mile are now more realistic, but the relationship between the values of respective races remains similar however, as do the ranking positions. This is just road-races.

See notes at foot of table if you're interested in some background info.

RankRaceAv Gain (m/mile)
1Keswick HM32.50
2Goring & Woodcote 10k21.68
3Hampstead Midsummer 10k 21.52
4Great Langdale 10k21.40
5Croydon 10k15.48
6Roding Valley HM14.45
7St Albans HM 200814.38
8Watford HM14.27
9Flitwick 10k 0914.18
10Stamford 30k13.53
11St Albans MWL 7M13.30
12Doug Anderson Mem' 5k (Bedford)13.29
13Serpentine LFOTM 5k13.28
14Regents Park 10k13.18
15Bury 2013.03
16NHRR MWL 10k Stev12.29
17Buntingford 10 0712.29
18Bish MWL 10k11.81
19Oakley 2011.44
20Barnes Green HM10.93
21Woburn 10k10.77
22Whipsnade 10k10.72
23FVS 3k Relays10.08
24Stevenage 5k (2008)9.88
25Bracknell HM9.53
26Sandy 10 099.37
27WGC 10M9.09
28Stev HM 20089.06
29Bedford HM8.94
30Springfield Striders 5M8.74
31Horndon 10k8.67
32Billericay 10k8.46
33NVH Ferry Meadows 5k8.43
34FVS MWL 10k8.05
35Harlow 107.71
36WGC MWL 10k7.61
37Swineshead 10.297.47
38Chelmsford 10k7.21
39Breckland 10k7.10
40Standalone 10k6.98
41Leicester HM 076.83
42Reading HM6.67
43Chessington 10k6.44
44Stevenage 5k (2007)6.24
45WGC MWL 56.14
46Shinfield 10k (nr Reading)5.89
47Bearbrook 10k5.66
48Milton Keynes (Caldecott Lake) 5k5.66
49St Neot's HM5.50
50Wokingham HM5.27
51Cranfield 55.08
52Leighton 104.96
53Wolverton 54.76
54NSPCC Milton Keynes HM4.37
55Nike+ Milton Keynes HM4.33
56Nene Valley Harriers 104.25
57Felsted 10k (nr Braintree)4.06
58Silverstone HM3.53
59Fred Hughes 10 (09)3.43
60Silverstone 10k2.80
61Hatfield Broadoak 10k 062.77
62Lea Valley 10k2.43
63Grunty Fen HM1.83
64Langtoft 10k (Market Deeping)1.00
65Andy Reading 10k0.97
66Staines 10k0.90

Note 1: I should state at the outset that it is generally accepted that you lose more time going up a slope of a given distance/gradient than you make up going down it. This applies to runners of all abilities, but the faster/better hill-trained you are, the less the effect (but an effect nonetheless). That is the basis of my ranking table and why it measures average metres gained per mile. Most courses start and finish at about the same height (net elevation change = about zero), but my formula makes allowance for courses where this is not the case too. A very undulating course with a significant net elevation loss between start>finish will get a lower score for example.

Note 2: The jury' s still out (in my head!), but it may be that those courses that are gently undulating (say score between 3-8) are faster than dead-flat ones. This may just be that the brain prefers a little variation or perhaps that the leg muscles do too?

Note 3: another possible factor (but difficult to measure) is where the up-hill sections are as well as how often and how steep on average (the latter being what my table reflects) . One seemingly counter-intuitive POV is that hills near the start are worse because, being fresh, you may apply too much effort and not notice the effects until later in the race. A long (in context of race-distance) downhill section to the finish can also play a part.

Note 4: Most feedback I've had is that this table is a fairly accurate guide to how races 'feel'. You could also use it to make more sensible comparisons between race times. For example, a time of 41:30 at Flitwick 10k would almost certainly be a 'better' performance than 41:15 at Hatfield Broadoak.

3 comments:

  1. I posted about your previous table based on MotionBased but didn't realise you'd done this one. As I said I don't think these metres per mile figures are accurate. E.g. according to SportTracks Hatfield Broad Oak is 83% flat but the reality is it is almost all undulating and you do notice it in the legs when you are on the up. All you have to do it look at the elevation profile and see that the first rise starts at 77m and peaks at 97m and the second starts at 72m and peaks at 88m. Even ignoring all the other smaller unduations that is still 36 metres yet SportTracks gives 17.4m. http://utrack.crempa.net/ gives the total climbing as 60m which I is technically accurate. If you measure each incline and add them up it come to 60m. I'd rather use that raw figure than second guess what gradients are significant.

    Rick,
    Garden City Runners

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  2. Hi Rick - thanks for reading!

    You do need to bear in mind the following however...

    1. The default elevation smoothing setting on Sporttracks does tend to flatten out lots of small undulations. However, I minimise this smoothing setting on all my ST data.
    2. My scores are average metres gained per mile, so it's not just the climbing that is taken into account. For example, in a pyramid-shaped 10k with 60m up then 60m down, you'd get an average metres gained/mile score under my formula of only 9.66. It's a measure of average difficulty.
    3. Everyone I know who has done Hatfield Broadoak 10k thinks it's a fast course. This seems to be reflected in my rankings (as are many other 'fast' courses). Similarly, I don't think there are any races at the top of my list that are considered either flat or fast.
    4. I had a look at the http://utrack.crempa.net link. It would be interesting to run my all ST data through this, but this would take a considerable amount of time! No doubt the absolute scores would change, but I suspect the relative scores between races would remain broadly in proportion (as they did when I changed from Motion Based to Sporttracks).

    Cheers
    NHRR Statto

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  3. PS - I exported 5 races from ST to gpx and ran through the http://utrack.crempa.net/ cruncher. As I suspected, the resulting scores through my formula are higher (as teh total elevation gain/loss numbers are higher), but the relationship between the respective race rankings is little altered.

    Race..................uTrack..ST
    Flitwick 10k..........18.51...14.18
    WGC MWL 10k...........12.87....8.30
    Hatfield Broadoak 10k..8.85....2.77
    Silverstone 10k........8.21....2.85
    Staines 10k............5.95....0.90

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