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Speed Skating Forum Most of the discussions in this forum will be about inline speed skating but discussions about ice speed skating and quad roller speed skating are also welcome.

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Old September 21st, 2018, 03:07 PM   #1
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Default NSIM '18 results plot

here is Elite, Adv, Rec all on one plot. Includes both men & women.

does anyone know exactly how short of full marathon this year's race was? (in feet)

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Old September 23rd, 2018, 04:31 PM   #2
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900 meters short or .56 mile
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Old September 23rd, 2018, 07:58 PM   #3
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sorry... 900 meters cannot be correct. If start location was same as always (and it was) the MOST the distance could have changed would be about 1000 feet (305 meters). I used google maps to measure distance between where the '18 finish line was and where I recall the 'normal' finish line would be and came up with a range of between 900 and 1000 feet. my GPS data from the race aligns with this estimate.
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Old September 23rd, 2018, 09:45 PM   #4
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Lesson: Donít listen to others when you know better!
It is 900ft.

https://northshoreinline.com/news/ne...rthshore-races

In marathon start line decision
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Old September 24th, 2018, 12:04 AM   #5
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yep... been there, read that...


"The decision was made to move the finish line approximately 900 feet (0.17 miles) back along the course, where all athletes will now finish on the bay side of the DECC."


the critical word for me is the tenth word in their description, "approximately".

being an anal retentive engineer... I want "EXACTLY"... the fourth word in my question. I have no good reason for wanting to know other than just wnating to know!
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Old September 24th, 2018, 03:48 AM   #6
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I highly doubt any official (exact) measurements were made of the new course. This reminds me that a first timer drove the course this year in preparation. She was surprised on race day that the big START line on the pavement was not the start line (which with significance [to her] moved the start onto a bigger downhill). I'm guessing that START line is for Grandma's marathon? In that case, I doubt Northshore is certified as a marathon distance like running marathons are. Getting an exact measurement of the change this year would still leave the question of exactly how long the course has been other years (though maybe that is not relevant to why you were asking for an exact distance in the first place)?
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Old September 24th, 2018, 04:59 AM   #7
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The running marathon goes through city streets instead of I35, and looks like it ends in a different spot too. With a lot more 90 degree turns, skating the running route would have a rather different feel.
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Old September 24th, 2018, 08:32 AM   #8
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For what it's worth here are my gps measurements for the last few years:

2018: 26.18 Forerunner 920xt
2017: 26.33 Forerunner 920xt
2016: (no accurate data)
2015: 26.44 Forerunner 310xt
2014: 26.40 Forerunner 310xt
2009 - 2013 (no data)
2008: 26.42 Forerunner 305
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Old September 24th, 2018, 06:20 PM   #9
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It is interesting to see Advanced 1 beat the Pro women. The one Helmen sister said that there was no way this could be possible. I suggested that the Advanced pack was much larger and the Advanced packs usually skate more consistent paces without much "Chess" playing during the race.
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Old September 24th, 2018, 08:06 PM   #10
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Also adding to the Adv men advantage is the long-long pace line effect on downhill coasts. There is a much much greater cumulative mass being pulled downhill with significantly less proportional air drag acting againt them. The Pro women have far fewer in their line (12 max) and they weigh a lot less each.

the men get two benefits. 1) they move faster downhill while 2) getting more rest downhill than the pro women.
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Last edited by bjvircks; September 24th, 2018 at 08:10 PM. Reason: added last line
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Old September 24th, 2018, 09:08 PM   #11
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Quote:
Originally Posted by kufman View Post
It is interesting to see Advanced 1 beat the Pro women. The one Helmen sister said that there was no way this could be possible.
I think the disbelief was that the A1 lead pack included women who thus beat the Pro women's times.

One thing that's surprising is that women make up 45% of the overall field, but only 15% in Pro and Advanced.
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Old September 26th, 2018, 09:33 PM   #12
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Quote:
Originally Posted by shafeeqs View Post
I think the disbelief was that the A1 lead pack included women who thus beat the Pro women's times.

One thing that's surprising is that women make up 45% of the overall field, but only 15% in Pro and Advanced.
It isn't the first time that advanced women have beat the pro women. If you look at the course record, the fastest female was not a pro inline skater. She was world class long track ice skater but she was not in the pro pack.
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Old October 9th, 2018, 07:16 PM   #13
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Quote:
Originally Posted by bjvircks View Post
Also adding to the Adv men advantage is the long-long pace line effect on downhill coasts. There is a much much greater cumulative mass being pulled downhill with significantly less proportional air drag acting againt them. The Pro women have far fewer in their line (12 max) and they weigh a lot less each.

the men get two benefits. 1) they move faster downhill while 2) getting more rest downhill than the pro women.
Wow...physics...mind blown.
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Old October 9th, 2018, 08:04 PM   #14
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yeah... conservation of momentum and shared streamlining... what novel concepts!

If you really want to have your mind blow wide open ask me about the real physics of why big wheels are hard to spin up.
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Old October 9th, 2018, 10:12 PM   #15
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So, no course records were broken this year then?
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Old October 10th, 2018, 02:35 AM   #16
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nope... and because course was shortened by .2 miles due to construction at area of regular finish line it wouldn't have counted anyway.
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Old October 10th, 2018, 03:39 AM   #17
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Quote:
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So, no course records were broken this year then?
Not officially, because of the shortened course. By raw numbers, Ken Kuwada beat Chad Hedrick's time by one minute, six seconds.

By my calculations, Ken would have to skate the remaining distance at a pace of 11mph to beat Chad.

Seems doable.
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Old October 10th, 2018, 09:38 PM   #18
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yep... doable! my mistake
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