The garmin forerunner 305 is a perfect companion to do your lonely running exercises: It has a very accurate GPS and compared to the older 301 model it is a lot smaller, just a bit more fat than an average full-featured digital watch.

I used it to do one of my favourite training run of exactly 5.4km (which I now know thanks to the 305). It can also measure my heartbeat by wirelessly connecting to a belt around your chest.

The windows software package can project your course and that's where the -until now- one minus point is: it projects some highways but as you can see in the picture, the highway is a bit too much to the right as I did not go under the Dutch A2 but just walked in parallel with it. 

One of the nicest things in here (and as I only used it once I did not yet test it) is that you can run against yourself: you can give up your previous run and it will project on the watch where you ran the last time.

So who says that running is no fun?