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Posted: Thu Aug 12, 1999 1:37 pm Post subject: |
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Dose anyone know what the formula is for calculating average time per mile given the time and distance?
[Anonymously Posted by: 'Christopher Connelly'] |
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Dan Chief Pontificator
Joined: 22 Mar 1999 Posts: 9334 Location: Salem, OR
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Posted: Thu Aug 12, 1999 4:05 pm Post subject: |
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Correct me if I'm wrong, anyone, but I don't think there's a formula so much as it is a regular ol' conversion. Take your total time, convert it to seconds (or fractions of a minute, depending on how precise you want to be) and divide by the number of miles, then convert back to minutes and seconds if need be.
Dan |
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Posted: Thu Aug 12, 1999 11:39 pm Post subject: |
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HI Dan thanks for your responce. I not trying to be anal about it but that is the way it is done. I made a ruuning log in a Accesses data base and I need the actual Arithmatic. I am not a math wiz as you can tell but I have tried with a calculator converting the minutes to seconds dividing by the distance and then converting back to minutes but it dosen't seem to work. For example. If I ran 3.9 miles at a time of 27.25 minutes. How do I actualy convert the minutes to seconds is it 27.25 X 60? That would give me 1,635 seconds. Then divide by distance, 1,635/3.9 that gives the result of 419.23 seconds per mile. Now divide that by 60, 419.23/60 and I get 6.99. That should realy be 7.39. Do you get my drift? I did the last part in my head I just would like the computer to do it for me.
[Anonymously Posted by: 'Christopher Connelly'] |
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Dan Chief Pontificator
Joined: 22 Mar 1999 Posts: 9334 Location: Salem, OR
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Posted: Fri Aug 13, 1999 3:49 am Post subject: |
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Ok, let's see what we can do here:
27.25 minutes (I'll take that to mean 27 minutes and 25 seconds; .25 minutes would be 15 seconds, so adjust accordingly if I misread) = 1645 seconds (looks like I misread )
1645/3.9 miles = 421.79 sec/mile
421.79/60 = 7.03 min/mile
So, we know we have 7 min/mile and change. Take the remainder (0.03) and convert that to seconds,
0.03 * 60 = 1.8 seconds
Assuming I didn't make any mistakes along the way, that results in roughly 7:02 (rounding up) per mile.
Does that do it for you?
I was thinking of maybe writing a little program for this in Perl or JavaScript. Maybe I'll toy with it this weekend...
Dan |
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Posted: Fri Aug 13, 1999 9:03 am Post subject: |
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Don't worry about exact pace on easy days.
Just go by time run at your easy pace.
Instead of 3.9 miles at 27.25 mins....
Just say approx 30 min/4m at easy pace.
This is true especially in the heat
It also helps you cross train easier by comparing minutes with minutes.
-T
[Anonymously Posted by: 'Tyrone Goldstein'] |
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Posted: Fri Aug 13, 1999 9:33 am Post subject: |
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If you want a formula...
Example:
1:27:40 in 20 miles = ? min/ mile
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>Step 1: Get min/mile with decimal remainder
Formula: [(HRS x 60) + (MIN) + (SEC/60)] / MILES
Result : 4.383 min/mile
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>Step 2: Convert decimal remainder to second remainder
Formula: [REMAINDER x 60]
Result: 23 secs
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>Step 3: Remove decimal remainder, add second remainder
Result: 4:23 min/mile
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That's pretty damn fast!
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>Quick approximations for your head
0.016 min = 1 sec
0.05 min = 3 sec
0.10 min = 6 sec
0.25 min = 15 sec
0.50 min = 30 sec
0.75 min = 45 sec
1.00 min = 60 sec
You could say 4.38 is close to 4.4 = 4:24.
This is not a bad estimate from 4:23
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-T
[Anonymously Posted by: 'Tyrone Goldstein'] |
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Dan Chief Pontificator
Joined: 22 Mar 1999 Posts: 9334 Location: Salem, OR
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Posted: Fri Aug 13, 1999 9:55 am Post subject: |
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Thanks Tyrone, those are helpful pointers. I agree that an exact pace calculation is rather pointless unless you're on the track (or precisely marked roads) controlling pace for race preparation.
Dan |
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Posted: Sat Aug 14, 1999 3:40 am Post subject: |
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Thanks Tyrone and Dan,
I think this will help I am going to play around with it today. The purpose of the calculation is not to govern my pace, its more of a record keeping exercise. I developed an Access database for a running log. With a relational Database I can perform Queries for just about anything I want to compile, distance per week, per month, pace, and review notes. I could even break the fields down further to tempurature and humidity that would make it possible to relate performance to weather conditions. I think I will keep it simple for now. The running log is kind of a psycology, I look foward to making a new entry therefor I look foward to run.
I haven't run marathons for a few years just working on 5k's nothing more than a 10K. A relative of mine ask me if I want to run the Army Ten Miler hense the Running Log.
Thanks,
Chris Connelly
[Anonymously Posted by: 'Chris Connelly'] |
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Dan Chief Pontificator
Joined: 22 Mar 1999 Posts: 9334 Location: Salem, OR
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Posted: Sat Aug 14, 1999 8:41 pm Post subject: |
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Sounds like an interesting endeavor. Polish it up and you might be able to market it!
Dan |
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