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real distance?

panchotri's picture
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started by panchotri on August 18, 2005

I noticed in my bike computer that the distance in Vineman is 114 miles. It's not big deal for me because I wanted to finish only. But what if I wanted to do a sub-13 time, or beat a previous time (not my case), or get a spot to Kona. Vineman half is a qualifier and they used the same route only 1/2 of it. What if the swim and marathon distances are not exact?

How race organizers measure the distance and how accurate are they?

Wonder if you have noticed any discrepancy in your races?

vanjames's picture
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vanjames posted 2 years ago.

It's probably more likely that your bike computer is not 100% accurate. I have found mine to be within 5-10% either side compared to race distances. There are times when i have noticed at high speeds (downhills) that my speedometer miss registers, this could be becasue the magnet is going around too fast to register each revolution.

If the race is a Kona qualifier I imagine they are pretty strict on the distance measurements.

Also make sure your set up is correct for the wheels/650/700 etc.

panchotri's picture
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panchotri posted 2 years ago.

Right, i haven’t thought about that. I guess the other two distances we just have to trust the organizers. Water distance is a though call though. You may come out of the water sooner or latter of your estimated time and blame it to the current, there are no marks to measure your distance. Not like the run where you have the miles marked and can figure out your pace every mile.

beads1985's picture
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beads1985 posted 2 years ago.

If it is a legitimate race the course distances are carefully measured and have to meet certain standard, etc,...blah, blah blah.. You usually see something like that in the race packet.

On the bike it could also be how the computer was set up.
If it is not set exactly you may gain a little bit of distance with each tire revolution.
It may not be noticeable for smal distances but add up over the long haul.

Just an idea.

vanjames's picture
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vanjames posted 2 years ago.

I never worry about the swim. I usually go at least 100-200m off course anyway.

tcrunner07's picture
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tcrunner07 posted 2 years ago.

vanjames wrote:
I never worry about the swim. I usually go at least 100-200m off course anyway.

lol..nice vanjames..lol

If you get a flat, and don't have a tube, Suck it up and run it in!!!

bluebirdbiker's picture
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bluebirdbiker posted 2 years ago.

vanjames wrote:
I never worry about the swim. I usually go at least 100-200m off course anyway.

Hehehe James, nice :) I am the same way. Last 2 tris I went off course and had to scramble back to the line. I think I am worse though. This morning I was swimming at Gary Point and wasn't watchin', ended up smackin' my head into a rock at the shoreline. Ouch that smarted! Tore the cap a bit hehe.
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