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km-miles, meter-feet(16 posts)

km-miles, meter-feetelsaltamontes
Jul 16, 2003 10:07 AM
kind of late, but I still have trouble realizing how fast, how high and how far they ride... Hope this helps others.

30 mph/ 48 kmh
40 mph/ 64 kmh
50 mph/ 80 kmh
60 mph/ 96 kmh
70 mph/ 112 kmh

1000 meters/ 3280 feet
2000 meters/ 6560 feet
3000 meters/ 9840 feet

100 km/ 62.5 miles
200 km/ 125 miles
300 km/ 187.5 miles
.6 MPKMel Erickson
Jul 16, 2003 10:19 AM
6/10's of a mile per kilometer. Works good enough for distance and speed conversions.
calcs in my headDougSloan
Jul 16, 2003 10:22 AM
The way I think about it is take kilometers and divide in half; then add 10%. Makes the math easy.

Kinda like figuring out a 15% tipMel Erickson
Jul 16, 2003 10:32 AM
Take 10% of the amount and add another half of that.
you calling do(u)g a cheap bastid?JS Haiku Shop
Jul 16, 2003 10:47 AM
hows about 20% there, Mr. Mel?

mrs. haiku and i were both servers in a former life. it's not a fun job. we now use a baseline of 20-25% for tipping and only dip below that if service was poor.

remember, these folks have to deal with customers who don't tip, or tip <15%. servers also pay taxes on an assumed minimum tip amount based on their sales.


please tip liberally.

No, I guess I'm cheapMel Erickson
Jul 16, 2003 3:27 PM
15% is standard around here in podunkville, Wisconsin. I guess I don't understand why 15% was ok before but not now. Meal prices go up and the tip goes up accordingly. 15% of a $20 meal (20 years ago) is $3 and $7.50 for a $50 meal today. That's a 150% increase over 20 years or 7.5% per year. I wish I could get that kind of raise. Does the person who serves me a $20 meal today work less hard than the person who serves me a $50 meal tomorrow (I'll answer that, no)? Then why does he/she make more? I'm certainly not responsible for how others tip and refuse to make it up by tipping more. This whole tipping system is a crazy way to run a business. Just pay them a reasonable wage and price the meal accordingly.

P.S. I bussed in a former life (including washing dishes), got no tips and a lousy wage to boot. I suggest bussing is even harder than serving and the workers treated much more poorly. Besides, who said life was fair?
OR, you could multiply by 62, then divideOldEdScott
Jul 16, 2003 10:54 AM
by 35.2 But maybe that's getting a little complicated.
Mile/Kilo conversionspyderman
Jul 16, 2003 11:17 AM
Who's Afraid of the Metric Wolf?
By Charles Pelkey, VeloNews

When it comes to typical Monday morning water cooler chatter, most Americans can quickly visualize the distance if anyone mentions a 90-yard touchdown run, a 450-foot Major League homer or a quarter-mile drag strip.

But what happens when you, oh dedicated cycling fan, show up and start flappin' your jaw about those brutal closing 13.8 kilometers up L'Alpe d'Huez or Petacchi's hellacious 200-meter sprint? Admit it, you're bound to lose a few of your colleagues' attention if you start speaking in metric on 'em.

Sad to say, we are a stubborn breed here in the good ol' U.S. of A. So while the rest of the world calculates weight and distance in that simple base-10 metric system, we are happy to travel across the face of our stretch of the planet measuring our progress on a system based on the size of some guy's foot and the distance between a king's shoulder and thumb. We may be different, but we like it like that.

So even though seven of the last 15 Tours de France have been won by Americans, the good folks of France are not about to start telling anyone that the famous 6.15-km circuit on the Champs-Elysées is actually 3.82 miles. Nor will they tell you or anyone else that Alpe d'Huez is an 8.57-mile climb. Stubborn as we are, it's we Americans who have to start talking in kilometers.

So while you're taking in Tour coverage this year on OLN, Phil, Paul and the rest of the crew will do their best to convert kph to mph, but every once in a while you may have to do the math yourself.

The formula is simple: A kilometer is equal to = .62137 miles. For the sake of the math, it's easier to round of to .621. One hundred kilometers multiplied by .621 equals 62.1 miles.

So, if the Tour de France were held on American standards the race would open up with the 4.7-mile prologue in Paris and come back to the capital city three weeks later with a 94.7-mile ride from Ville d'Avray. But that ain't gonna happen.

For quick reference, here are the distances of all 20 stages of the Tour de France in miles.

Prologue - July 05
Paris 4.7 miles (8km)

Stage 1 - July 06
Saint-Denis - Montgeron - Meaux 104.4 miles (168km)

Stage 2 - July 07
La Ferté-sous-Jouarre - Sedan 126.8 miles (204km)

Stage 3 - July 08
Charleville - Mézières - Saint Dizier 103.8 miles (167km)

Stage 4 - July 09
Joinville - Saint Dizier 42.9 miles (69km)

Stage 5 - July 10
Troyes - Nevers 121.5 miles (196km)

Stage 6 - July 11
Nevers - Lyon 142.6 miles (230km)

Stage 7 - July 12
Lyons - Morzine 142.9 miles (230km)

Stage 8 - July 13
Sallanches - L'Alpe d'Huez 136 miles (219km)

Stage 9 - July 14
Bourg d'Oisans - Gap 114.3 miles (184km)

Stage 10 - July 15
Gap - Marseille 136 miles (219km)

Stage 11 - July 17
Narbonne - Toulouse 95 miles (153km)

Stage 12 - July 18
Gaillac - Cap Découverte 29.2 miles (47km)

Stage 13 - July 19
Toulouse - Plateau de Bonascre 122.4 miles (197km)

Stage 14 - July 20
Saint Girons - Loudenvielle 118.7 miles (191km)

Stage 15 - July 21
Bagnéres-de-Bigorre - Luz-Ardiden 98.8 miles (159km)

Stage 16 - July 23
Pau - Bayonne 122.4 miles (

Stage 17 - July 24
Dax - Bordeaux 112.5 miles (181km)

Stage 18 - July 25
Bordeaux - Saint-Maixent-l'Ecole 126 miles (203km)

Stage 19 - July 26
Pornic - Nantes 30.5 miles (49km)

Stage 20 - July 27
Ville d'Avray - Paris, Champs Elysé 94.5 miles (152km)

By the way, if you need a quick reference to convert data like Lance Armstrong's weight in kilograms (74.84) to pounds (165) or even to stones (11.785), try
cycling is the worst about mixing unitsDougSloan
Jul 16, 2003 11:55 AM
I can't think of any other endeavor that mixes English and metric units so much as cycling. Just look at the bike itself.

14 gauge spokes
700C wheels (which really aren't even 700 anythings)
1 inch (or 1 1/8) steer tubes
120 mm long, 1 1/8 inch steerer clamp, 26 mm handlebar clamp stems
27.2 mm seatposts
55 cm frame or 18" if a mtb
9/16" pedal threads with a 15 mm, 11 inch long, wrench
23 mm tires with 110 pounds per square inch pressure
130 mm rear spacing
1/2 inch pitch chain
172.5 mm cranks
42 cm handlebars with a 4 inch drop
2.1 inch mtb tires on 26 inch rims
43 size shoe
80 mm fork travel
16 pound bikes with 1600 gram wheels
5 feet of 5 mm cable housing
1 inch headset that uses a 36 mm wrench
A 155 pound rider making 400 watts at 30 mph, inside the 1 kilometer to go banner
1/4 inch ball bearings for a 125 mm spaced hub

Miss anything?

Jul 17, 2003 1:04 PM
you covered pretty much all, maybe 395g 26" rims?
it's time you guys came over to the light side...Frith
Jul 16, 2003 11:13 AM
imperial? I mean really....
dont forget..tobinb
Jul 16, 2003 12:51 PM
on the other hand, those brutal 10% grades in france are easy 6.2% climbs in the USA.
piece of cake!
what about the canadians?snowman3
Jul 16, 2003 2:38 PM
They are always talking about buying stuff with the canadian dollar. Example: It cost $100 (cdn). Often times I will multiply all #s by 1.6 to give the canadian equivalent. Example: I rode 5 miles (8 miles canadian). I rode for 20 minutes (32 minutes canadian).

Oh yeah.. about the KPH vs MPH. For quick math I just multiply the 1st digit by .6 and then round up. For 32kph, take 3 * 6 = 18 and then round up to 20 mph (32*.621 = 19.8 mph so not to bad). If the 2nd digit is large, ya gotta do a little work and multiply the 2nd by .6 also. 38 kph -> 3*6 = 18 round to 20, 6*8 = 48 round to 5, so 20 + 5 = 25mph. Close enough for me.
Does that mean?!gtscottie
Jul 17, 2003 7:49 AM
When I ride 25 kms to work in the morning and it takes 45 minutes... if I rode 15 miles instead it would only take 27 minutes? Man I am switching my odometer to miles. :)
many dont realize this is the secret behind Lance's strength nmcurtybirdychopper
Jul 16, 2003 2:43 PM
he has the strength of 1.6 metric guys! (nm)tobinb
Jul 17, 2003 9:10 AM