Take a Walk
Clover in the UK have produced this Take a Walk campaign to encourage the British to get outside and do some walking. The site includes over 25,000 walking routes throughout the UK, ranging from 0.1 to 30 miles.
Using the site you can search for a nearby walk by address and distance. The resulting walks are then presented overlaid on Google Maps. All the routes for the campaign have been provided by MapMyWalk.
Treasure Trails create fun treasure hunts around villages, towns and cities in the UK. Currently there are over 5oo Treasure Trails in locations all over the UK.
Treasure Trails provide a Google Map for each UK county showing the location of the available treasure trails in the region. To select a trail just click on one of the map markers. Unfortunately to actually view and print the trail you will then have to pay a small fee (£5).