Big Shoulders Stats: A local race?

Big Shoulders Stats: A local race?

More Big Shoulders stats, from my custom-made aggregate file. Here’s the proportion of Big Shoulders participants hailing from Illinois, Indiana, and “other” – i.e., anyplace besides IL and IN.

Clearly, Illinois locals still predominate, but recent years have seen a greater influx of out-of-state swimmers. In 2009, almost 30% came from outside of Illinois and Indiana – an all-time high.…

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“Race” Report: USMS 5K Postal Championship

“Race” Report: USMS 5K Postal Championship

See background post below, or here.

  • What: 5,000 long-course meters – for time
  • When: Friday, August 27, 2010. 5:45pm CDT
  • Where: Flames Natatorium, University of Illinois-Chicago
  • Why: Why not?
  • Training context: Monday, 4900 LCM; Tuesday, 5600 LCM; Wednesday, 4100 LCM; Thursday, 2800 SCY; Friday morning, 1 mile open-water
  • Gear (for any doubting Thomases out there – haha): FINIS racing jammer, silicone cap, swedish goggles
  • Goal Time: 1:06:40 (1:20 per 100m)

Final time: 1:05:26 (pace of 1:18.5).

Here’s how I did it:

  • By 500′s: 6:23.9, 6:25.7, 6:28.3, 6:31.2, 6:32.0, 6:32.7, 6:33.9, 6:32.7, 6:31.7
  • By 1000′s: 12:49.7, 12:59.5, 13:04.7, 13:06.1, 13:04.4
  • Through the first 1500m:
    • 100: 1:14.1
    • 200: 2:31.0
    • 400: 5:06.4
    • 800: 10:15.7
    • 1500: 19:18.0

Note: To get a clearer picture of my actual pace through the swim, these splits are adjusted for the 3 Gatorade breaks I took at 1500m, 3000m, and 4000m. I calculated this by taking the 100m split before the break, the 2nd 100m split after the break, and averaging the two to estimate the 100m split directly after the break (which in the raw split sheet includes the break time).…

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5K Postal Swim – some background

5K Postal Swim – some background

As my former Sharks teammates know, I attempted the USMS 5K Postal Championship (5,000 long-course meters for time, in your home pool, between 5/15 and 9/15) back on June 27, two days before my wife and I moved from Columbus to Chicago. For various reasons, it didn’t work out too well. Both mentally and physically, I just didn’t have it that day. I was distracted and anxious about the move; I had been packing and lifting boxes all week;  and for whatever reason (self-sabotage, probably), I thought it’d be good idea to do a “warm-up set” of 5×1000 LCM the day before.

In any case, I ended up with a 1:07:32 that day (pace of 1:21.0 per 100m) – not altogether terrible, but I knew I had a better swim in me. I had been debating letting the time stand, as it will probably place well in my age group anyway. But something else forced my hand: Somehow, during the move, I had lost the split sheet! (You’re required to submit your 100m splits to verify the swim.)

Now I had to do it again.…

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Big Shoulders Stats: Participation by Age

Big Shoulders Stats: Participation by Age

More fun with Big Shoulders stats. We’ve been looking at participation – so what about age? Masters swimming is traditionally dominated by people in their 40′s and 50′s – is the same true here?

It seems the modal age is actually a bit younger in Big Shoulders – lots of people in their 30′s. But the “50′s” have been mounting a furious comeback (see the blue line) – perhaps a baby boomer effect.

My custom aggregate CSV file, from which I calculated these stats, is available here.…

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Pan Pacs: The story of the splits

Pan Pacs: The story of the splits

Splits tell the story of a race. It’s perhaps even truer in open-water swimming than in the pool, because the races are more “spread out” over space and time. Splits are rarely kept for O.W. races, though, due to obvious logistical obstacles.

Powerhouse Timing has been working to change this – at least at the elite level. At this past weekend’s Pan Pacific 10K Championship, they captured splits at each 2K for the entire field, both men and women. And what an interesting story they tell. Here are the 2K splits, which I converted to pace-per-100m:

Women:


2K 4K 6K 8K 10K total
JENNINGS (USA) 1:11.4 1:11.9 1:11.3 1:13.6 1:13.4 2:00:34
FABIAN (USA) 1:11.3 1:11.8 1:11.4 1:13.6 1:13.6 2:00:36
BRUNEMANN (USA) 1:11.5 1:11.9 1:11.4 1:13.6 1:13.5 2:00:38
ANDERSON (USA) 1:11.7 1:11.9 1:11.3 1:13.6 1:13.6 2:00:41
GORMAN (AUS) 1:11.4 1:12.0 1:11.2 1:13.6 1:14.7 2:00:57
BALAZS (CAN) 1:11.7 1:11.9 1:12.0 1:14.0 1:17.6 2:02:23
DEFRANCESCO (AUS) 1:11.6 1:11.9 1:11.6 1:13.5 1:18.7 2:02:26
BAKER (NZ) 1:11.5 1:11.9 1:11.7 1:14.6 1:21.5 2:03:44
WILLIAMS (CAN) 1:11.7 1:12.0 1:14.7 1:18.2 1:15.7 2:04:07
HOSCHKE-EDWARDS (AUS) 1:11.6 1:11.9 1:12.7 1:17.9 1:18.9 2:04:21
HANSFORD (AUS) 1:12.0 1:12.2 1:16.4 1:18.9 1:21.1 2:06:52
KIDA (JAP) 1:11.8 1:12.4 1:16.1 1:19.2 1:24.5 2:08:00

Men:


2K 4K 6K 8K 10K total
PETERSON (USA) 1:12.2 1:09.5 1:09.0 1:09.2 1:08.0 1:56:00
CRIPPEN (USA) 1:12.7 1:09.3 1:09.0 1:09.3 1:07.9 1:56:03
WEINBERGER (CAN) 1:12.0 1:10.5 1:08.0 1:09.2 1:08.4 1:56:03
CARMO (BRA) 1:12.4 1:10.8 1:08.0 1:09.1 1:08.0 1:56:05
FRAYLER (USA) 1:12.5 1:10.5 1:08.2 1:09.2 1:14.8 1:58:23
O’BRIEN (AUS) 1:12.1 1:11.5 1:11.5 1:11.5 1:11.4 1:59:20
ASHWOOD (AUS) 1:12.3 1:11.6 1:11.2 1:11.4 1:11.7 1:59:25
RYAN (USA) 1:12.8 N/A N/A 1:12.2 1:11.5 1:59:26
KLEUH (USA) 1:12.4 N/A N/A 1:11.6 1:11.5 1:59:26
BROWNE (AUS) 1:12.3 1:11.5 1:11.0 1:11.4 1:12.1 1:59:27
KING (CAN) 1:12.2 1:11.3 1:11.3 1:11.8 1:12.0 1:59:32
MAINSTONE (AUS) 1:12.1 1:11.5 1:11.3 1:11.7 1:12.3 1:59:39
ENDERICA (ECU) 1:12.4 1:10.9 1:08.2 1:09.1 1:20.9 2:00:28
CHETRAT (CAN) 1:12.2 1:11.8 1:11.3 1:12.3 1:20.6 2:02:45

Some notes:

  • The women – led as usual by Eva Fabian – took it out fast, and were almost 20 seconds ahead of the men at 2K.


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Stormy, Husky, Brawling

Stormy, Husky, Brawling

Less than 3 weeks ’til Big Shoulders! This race has a special place in my heart: It was at Big Shoulders ’09 where I caught the open-water bug. Without which, this summer wouldn’t have been nearly as awesome.

Little did I realize that Big Shoulders would soon be my hometown race. And I’m happy to see it prosper: In its 20th year, it reached the maximum registration of 800 swimmers for the first time. That’s an eightfold increase since 1998, the first year for which results are available on the web.

To facilitate analysis across years, I aggregated these 12 years of results (1998-2009) into a single CSV file. This is what you might call a picture of success:

– Notes –

  • 1999: first year that a 2.5K race was offered
  • 2005: 2.5K race was the USMS 1-3 mile national championship
  • All data-slinging, number-crunching, and picture-making performed with the assistance of R and ggplot2.


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Elite vs. Masters in the open water

Elite vs. Masters in the open water

What’s the difference between Masters open-water races and elite FINA or USA-S open-water races? I would argue, it’s not so much the absolute swimming speeds (1:10 per 100m for 10K, compared to 1:20 to win almost any Masters 10K), but the variability of swimming speeds.

Masters races have a much wider spread of abilities. In this year’s USMS 10K at Morse Reservoir, the top 10 finishers were separated by 9 seconds per 100m, and the winner was a full 29 seconds per 100m faster than the median finisher. What this means is, most people are swimming most of the race by themselves.

In FINA races, the spread in abilities from top to bottom is (I would guess) less than 5 seconds per 100m. What that means is: lots of pack swimming. In order to successfully break away from an open-water peloton, a swimmer will not only have to swim faster than the others in the pack, but fast enough to break out of the peloton’s draft.

As a result, elite races are characterized by 8-9K of conservative, highly tactical swimming followed by 1-2K of balls-out sprinting.…

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What’s your “forever pace”?

What’s your “forever pace”?

What pace can you hold… well, maybe not “forever,” but let’s say… indefinitely. What would your pace be if you intended to swim all day – not racing, just swimming (and given that you’re fully warmed up) ?

Imagine you’re David B. (a.k.a. “chaos” on the USMS forum) swimming across the Catalina Channel. He’s a swimmer fully capable of a sub-10 hour crossing, but because of adverse currents it turns into 15 hours, 37 minutes. What’s that pace?

As I think more and more about true “marathon” swimming – I’m doing my first race over 10K in October – this seems an increasingly fundamental question. Yet it’s a question that, despite my many years in the sport, I had never thought to ask.

Now that I have more regular access to long course water, I’ve had better opportunities to answer this question. And for me, right now, that pace is about 1:24 (+/- 1 second) per 100 meters.

Obviously, since I’ve never done a swim longer than 2.5 hours, it’s difficult to say what 15 hours in the water would do (nothing good, I’d imagine).…

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