fun things to do with a GPS

GPS's are getting cheaper all the time, especially on ebay. Though you need to master the compass and natural navigation methods too, the GPS can enhance walking in quite a few unusual ways.

One interesting thing is to measure the exact number of paces you take to walk a kilometre. Before it was quite hard to accurately measure a kilometre but with a longish straight track or flat piece of beach or desert it's quite easy using the distance device on a GPS. In the old days a 'pace' was a correct navigational term- usually reckoned around five feet- it was found by actually taking two paces- the reason being it's much easier to count when only your right foot (or only your left) is counted hitting the ground, not right then left, which is too fast for a natural walking pace.

Your pace will even out over a kilometre- it'll be around 550-700- so remember your number. That way, when out without a GPS (or in a forest where tree cover stops a reading) you'll be able to measure your exact distance walked. Tip: when counting hundreds carry stones in one hand- transfer them to a pocket after each hundred is counted. Then check the pocket at the end and add whatever number you are up to. (It's the same method used by cricket umpires to count bowls in an over.)

When you're in a car it's fun to check the speed of the car with the GPS- often the speedo says a speed up to 5mph or more faster than it really is. You can also check the speed when cycling, horse riding or even canoeing. If you can get the window down or the glass isn't too thick you can speed test a train too. Also it helps ease the boredom of running and gives you a target to aim for.

You can use a GPS to help train your natural navigation abilities. Wander into a big wood having marked the entrance. Then shut off the GPS and try and get yourself lost. Then try to find your way out- go as quickly as you can, often when you don't allow yourself to think (as long as this is intentional and not a panic) you find your way instinctively. After twenty minutes switch on the GPS and see how well you have done. Use the lie of the land, changes in vegetation, direction of water flow to get a sense of direction. For more on this check out the excellent 'Finding your way without map or compass' by Harold Gatty.

With GPSs that record routes without marking: strap your GPS to your dog's collar when you are out walking on open heathland where he can run freely. Print out his route when you get home. Do different walks and compare them. Good for getting tips on how to run around like a dog. Strap two GPSs to two different dogs, print out both routes in different colours. Submit for arts council funding.

You can use the altitude function to measure the heights of hills, rock climbs or even buildings you ascend. Take bets from the others about what the real height of the Millenium wheel is. Did the owners exaggerate a bit?

The small handheld GPSs like the etrex are best but there are also watch GPSs these days- but obviously they are going to be a bit expensive despite being quite handy.