I am providing the reference of one of the popular sites that has some very good tips for 5K run -
[glow=red,2,300]
www.coolrunning.com/engine/2/2_3/181.shtml[/glow]
I am pasting an excerpt from there.
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The Couch-to-5K ® Running Plan
Our beginner's running schedule has helped thousands of new runners get off the couch and onto the roads, running 3 miles in just two months.
By Josh Clark
Too many people have been turned off of running simply by trying to start off too fast. Their bodies rebel, and they wind up miserable, wondering why anyone would possibly want to do this to themselves.
You should ease into your running program gradually. In fact, the beginners' program we outline here is less of a running regimen than a walking and jogging program. The idea is to transform you from couch potato to runner, getting you running three miles (or 5K) on a regular basis in just two months.
It's easy to get impatient, and you may feel tempted to skip ahead in the program, but hold yourself back. Don't try to do more, even if you feel you can. If, on the other hand, you find the program too strenuous, just stretch it out. Don't feel pressured to continue faster than you're able. Repeat weeks if needed and move ahead only when you feel you're ready.
A few minutes each week
Each session should take about 20 or 30 minutes, three times a week. That just happens to be the same amount of moderate exercise recommended by numerous studies for optimum fitness. This program will get you fit. (Runners who do more than this amount are doing it for more than fitness, and before long you might find yourself doing the same as well).
Be sure to space out these three days throughout the week to give yourself a chance to rest and recover between efforts. And don't worry about how fast you're going. Running faster can wait until your bones are stronger and your body is fitter. For now focus on gradually increasing the time or distance you run.
Run for time, or run for distance
There are two ways to follow this program, to measure your runs by time or by distance. Either one works just as well, choose the option that seems easiest for you to keep track of. If you go with the distance option, and you are not using a track to measure the distances, just estimate. It's not important to have the distances absolutely exact.
Before setting out, make sure to precede each session with a five-minute warmup walk or jog. Be sure to stretch both before and after. Read "Stay Loose" for some suggestions.
Schedule for running -
Week Workout 1
1 Brisk five-minute warmup walk. Then alternate 60 seconds of jogging and 90 seconds of walking for a total of 20 minutes.----------------------------------------
Those who have already been doing walking / running can share few personal tips. But if anybody is beginning they can use the above as reference.
What are your thoughts? We got to get into interactive mode. I am no professional in this field, but have enough experiences to share tid bits. So do post what you think?
Schedule for walking can be modified as
Week Workout 1
1 Brisk five-minute warmup walk. Then alternate 60 seconds of very brisk fast walking and 90 seconds of moderate speed walking for a total of 20 minutes.