First part of Dunalastair analysis. Sorry, a bit detailed... you can just jump right to the conclusions at the end.
The Black course (M21E) was perhaps a bit long; aimed at 90 min the result was:
1st Graham Gristwood 92:13
2nd Hector Haines 94:25
3rd Douglas Tullie 96:45
4th Edgars Bertuks 99:39
The Dark Brown course (W21E) was quite a lot too long; aimed at 80 min the result was:
1st Jessica Tullie 97:33
2nd Fanni Gyurko 100:23
3rd Laura Robertson 105:41
4th Christiane Tröße 106:44
I don't think there was a huge difference in the quality of the field. Jessica said she made some errors, and may have lost ca. 4 minutes but not 15 (and the splits agree).
The courses were very similar in layout and terrain, and shared a number of legs.
The SOL guidelines suggest that W-E have a course that is 0.85 of the length of the M-E course, for a similar winning time. As the EWT for the women was meant to be 80 min rather than 90 min, I planned the dark brown to be 0.76 of the length:
Black: 14.6 km, 480 m climb
Dark Brown: 11.1 km, 390 m climb
The proportions don't change much if you correct for climb, using either formula.
On the shared legs we can compare actual speed:
139 - 101 1 stile, 517 m, 35m downhill, rough but not dense (BL 5, DB 9)
M
Edgar Bertuks 02:33
Douglas Tullie 02:35
Graham Gristwood 02:48
F
Jessica Tullie 03:14
Fanni Gyurko 03:22
Arntraut Gotsch 03:48
Average M time vs F time: 0.76
101 - 122 15m up, rough but not dense, 180 m (BL 6, DB 10)
M
Graham Gristwood 01:24
Hector Haines 01:27
James Tullie 01:27
F
Fanni Gyurko 01:45
Paulina Farron 01:45
Jo Shepherd 01:56
Average M time vs F time: 0.79
119 - 108: 511 m, 20m up, rough, detour around dense (BL 12, DB 5).
M
Graham Gristwood 03:29
Douglas Tullie 03:49
Michal Olejnik 03:53
F
Jessica Tullie 04:44
Jo Shepherd 04:46
Paulina Farron 04:49
Average M time vs F time: 0.78
129 - 113: 319 m, 35 m up, rough but not dense (BL 18, DB 17)
M
Hector Haines 02:15
Graham Gristwood 02:17
Edgar Bertuks 02:25
F
Jessica Tullie 03:05
Kirsten Strain 03:09
Fanni Gyurko 03:17
Average M time vs F time: 0.73
The average time ratio here is more like 0.77 than 0.85. I then checked the S6D technical manual and the proportion in F/M course lengths used for the elites is 0.78. The JK competition rule G has 0.79 for the middle distance courses with the same winning time.
So, I went wrong in the first step: the 0.85 used in SOL is just because the way classes fit into a limited number of colour coded courses, and that was the black/brown ratio that was there. This is confirmed by SOL1&2 results: W21E don't win the brown course (typically the best W21 is 10th or so) as the EWT for the brown is aimed at faster male classes (M18, M35).
Instead of a ratio of 0.76 in the course length it should have been something like 0.69.
This would maybe have been picked up by me or the controller if we had had more time rather than last minute course changes!
Roos
Dunalastair M21E/W21E course lengths
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- Rosine
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Re: Dunalastair M21E/W21E course lengths
Hopefully if Jess gets picked for WOC Long she will find her course at Affric easy then?
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Freefall - addict
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Re: Dunalastair M21E/W21E course lengths
Rosine wrote:So, I went wrong in the first step: the 0.85 used in SOL is just because the way classes fit into a limited number of colour coded courses,
Roos
Not quite. All the SOL classes have women two courses below the men, except for W21. This is because our very excellent elite ladies wanted proper long distance courses (some 10 mins longer than standard SOL "short brown"), and spent a couple of years running up to prove the point. Since the Brown course already existed it was rude not to.
The boys were, um, less enthusiastic about having and extra 25 mins and every SOL, and since we could hard fill the black course anyway, splitting it in two wasn't very sensible.
Anyway, your conclusion is spot on: the speed ratios are the second most reliable way to get the relative lengths right.
The best way is actual test runners: a request on the SEDs list is more productive for this than most people expect.
WOC2024 Edinburgh
Test races at SprintScotland (Alloa/Falkirk) and Euromeeting (near Stirling).
Test races at SprintScotland (Alloa/Falkirk) and Euromeeting (near Stirling).
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Re: Dunalastair M21E/W21E course lengths
he best way is actual test runners: a request on the SEDs list is more productive for this than most people expect.
Thanks for the tip. For Dunalastair that would have been useful. Course length ratios are even less use when the longer courses cover very different terrain from the shorter courses - the hillside to the N has a different character than the deer-fenced forest in the middle.
Roos
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