What would you need to do a 70.3 or IM swim in to have a reasonable chance of completing 10k in under 3 hours? The run for me wouldn't be an issue if I was in proper race shape, but I have no frame of reference for how long a 10k swim would take me. All my open water swims are generally measured in 1.9k or 3.8k increments!

Shouldn't be hard at all for a pro triathlete. The only question is do they want to give up a week or two thanks to the run. I suspect that the fueling during the swim would be the hard part for non-pros.

It works out to about 2:00/100M to go 3 hours, but that's also open water and for 10,000M. My guess is if you can swim sub 1:05 for an Ironman swim, you can probably swim sub 3 for a 10k. But all dependent on conditions and training for the event.

Every athlete will have their own kayaker, so fueling isn't that big of an issue.

I think the pros will be able to do it and I think they are going to be a little surprised what their run legs feel like after a 10k swim.

Tim

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http://www.magnoliamasters.com
http://www.snappingtortuga.com
http://www.swimeasyspeed.com

Cool!

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maybe she's born with it, maybe it's chlorine
If you're injured and need some sympathy, PM me and I'm very happy to write back.
disclaimer: PhD not MD

I plugged the numbers into a swim pace calculator, and it gave me 1:48/100m to do a 10k swim in exactly 3 hours.

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Athlinks / Strava

2:00/100M for 3 hours will lead to 3:20 marathon swim - still 20 minutes over the target.

My real question here. How long should I expect in order to train my speed from 4 hours 10 km to 3 hours 10 km swim?

Without seeing your stroke or how you move in the water, there's no way to even guess. It could be as quick as a few months to never.

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http://www.magnoliamasters.com
http://www.snappingtortuga.com
http://www.swimeasyspeed.com

We are hoping for a fun day.

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http://www.magnoliamasters.com
http://www.snappingtortuga.com
http://www.swimeasyspeed.com

Question - why does it have to be no wetsuit? Those of us in northern climates would appreciate a bit a warmth!

The open water swimming community doesn’t like wetsuits. I’m going to go by FINA open water wetsuit standards.

Tim

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http://www.magnoliamasters.com
http://www.snappingtortuga.com
http://www.swimeasyspeed.com

I agree with the no wetsuits

What's the target date?

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maybe she's born with it, maybe it's chlorine
If you're injured and need some sympathy, PM me and I'm very happy to write back.
disclaimer: PhD not MD

October 11th.

Tim

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http://www.magnoliamasters.com
http://www.snappingtortuga.com
http://www.swimeasyspeed.com

So the swim leg is cancelled if the water is under 16C ? Think that's the min temp under FINA rules for 10ks.
Very Ironman cancelling the swim when the water is too wet 🤣

There needs to be a standard, otherwise athletes’ health can get put at risk. And if you were ever in charge of an Ironman swim course, you’d understand why Ironman is conservative around swim conditions.

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http://www.magnoliamasters.com
http://www.snappingtortuga.com
http://www.swimeasyspeed.com

is this a DIY adventure or is it happening at a location?

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maybe she's born with it, maybe it's chlorine
If you're injured and need some sympathy, PM me and I'm very happy to write back.
disclaimer: PhD not MD

We are doing it at Lake Conroe just outside the Woodlands.

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http://www.magnoliamasters.com
http://www.snappingtortuga.com
http://www.swimeasyspeed.com

I'm about 8 hrs from there (driving). I'd be interested next year if the pandemic is over. The sub-3 run wouldn't happen for me, but I could have some fun in the swim :-)

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maybe she's born with it, maybe it's chlorine
If you're injured and need some sympathy, PM me and I'm very happy to write back.
disclaimer: PhD not MD

I’ll keep you in the loop.

Tim

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http://www.magnoliamasters.com
http://www.snappingtortuga.com
http://www.swimeasyspeed.com

Thanks!

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maybe she's born with it, maybe it's chlorine
If you're injured and need some sympathy, PM me and I'm very happy to write back.
disclaimer: PhD not MD

any news?

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maybe she's born with it, maybe it's chlorine
If you're injured and need some sympathy, PM me and I'm very happy to write back.
disclaimer: PhD not MD

I'm not sure how it finished up but when I left the venue Matt Hanson and Justin Daerr were flying out on the run course. Unless they detonated (entirely possible with temps soaring into the 90's) those two should be able to do it...with time to spare.

5 athletes started: Lisa Roberts, Matt Hanson, Justin Daerr, Tyler Blackburn and yours truly.
4 athletes made the 3-hour 10K cut-off (in order): Tyler Blackburn, Matt Hanson, Justin Daerr, and me (a ways behind with 4 minutes to spare)
1 athlete missed the swim cut: Lisa Roberts
2 men dropped out of marathon: me and Tyler Blackburn
2 men were past the halfway mark well under the time needed and were still flying

Despite missing the swim cut, one of the Volunteers out on the run course said Lisa laced up and was running anyways. I wouldn't be surprised if she dips under 3 for the marathon leg.

I'm sure Tim will weigh in once he's up for air. Also hoping the photos turned out so we can share a gallery on the front page here.

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Lars Finanger
Odyssey SwimRun

i just saw a few posts from scott flathouse photography, looks like some possible cool shots from the swim!

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80/20 Endurance Ambassador

nice! Thanks for the update.

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maybe she's born with it, maybe it's chlorine
If you're injured and need some sympathy, PM me and I'm very happy to write back.
disclaimer: PhD not MD

Why the exclusivity and shutting out most people by putting a time limit. The majority of people on ST cannot do neither a sub 3 hrs marathon nor a 10km sub 3 standalone forget about combining them.

Why not just give the challenge to do both regardless of time.

I have done both sub 3 standalone. In my best year of both when I ran 2:48 in a standalone marathon and swam 56 min in an IM. i would have been able to do both back to back. But 25 years later back to back no way. I could do the 10,000m tomorrow sub 3 but no way on the run. I would be hard pressed to break 4.5 hrs. But I will be 55 shortly so noany of us doing sub 3 on the run standalone but many 55 year olds can do sub 3 swim 10K

Sorry disregard my last post. I thought you were proposing something for us all to go do on our own. The word challenge threw me off. But if it is onsite head to head with timing, then that's racing to me! Then I understand why you have time cut offs for ability.

I think a 5km swim + 21 km run would be a good doable event that most people could race. Sub 3 would be doable by lots of people. Most age groupers would barely be able to shuffle after a 10km swim.