Speed and distance units typically use either GPS (a satellite signal is repeatedly sent by the watch) or a foot pod (a highly sophisticated movement sensor that is attached to the shoe).

GPS has recently become more popular as the accuracy, strength of it's signal and the size of the watch you have to use improves. The foot pod however can help record a more complete log of your training if you ever use a treadmill (e.g. bad weather)for example only the foot pod will work.

This is an area where each new watch that comes out sees a significant improvement in usage and functionality. Typical feature are speed / pace function (how many minutes per mile or kilometer you are achieving) and distance (how far you've gone again either in miles or kilometers). You can also usually use this with a heart rate monitor as well.

It's important to use this data to help your training. The ability to download this data (e.g. to Nike Plus) is a massive benefit. Patterns and progress with your training can much more easily be monitored.

Save: 10% Only £135.00 RRP:  £150.00 Garmin Forerunner 110 (black/grey) Garmin Forerunner 110 Please note: This version is without the HRM chest strap. This watch is GPS-enabled so it knows how far and how fast you've gone — with no extra bells and whistles. There’s...» more info

Save: 10% Only £162.00 RRP:  £180.00 Garmin Forerunner 110 (black/red) Garmin Forerunner 110 This version comes with the HRM chest strap. This watch is GPS-enabled so it knows how far and how fast you've gone — with no extra bells and whistles. There’s virtually no...» more info

Save: 10% Only £162.00 RRP:  £180.00 Garmin Forerunner 110W (grey/pink) Garmin Forerunner 110W This version comes with the HRM chest strap. This watch is GPS-enabled so it knows how far and how fast you've gone — with no extra bells and whistles. There’s virtually n...» more info

Save: 10% Only £207.00 RRP:  £230.00 Garmin Forerunner 210 Garmin Forerunner 210 Simple to use speed and distance monitor. You can focus on your workout. Out of the box you: • charge it • take it outside to find GPS satellites • answer a few setup quest...» more info

Save: 10% Only £297.00 RRP:  £330.00 Garmin Forerunner 410 Garmin Forerunner 410 INCLUDES: • High sensitivity GPS receiver • Premium Heart Rate Monitor • USB Ant Stick (wireless sync) • Additional wrist straps • AC charger • Charging clip • Quick st...» more info

Save: 10% Only £135.00 RRP:  £150.00 Nike GPS watch Nike+ Sportwatch GPS Running Speed and Distance System. 00886736629513 Men's Running magazine (Feb12) tested it and said: "Light, handsome, easy to use, clear display, good GPS, accurate, sporty l...» more info

Only £99.00 Soleus GPS watch Soleus GPS watch Available in 2 colours. The Soleus GPS 1.0 is simple and easy to use. It will allow runners to accurately track their speed and distance. It also gives Auto lap splits at every...» more info