Walking anywhere is good for your health, but in the countryside the benefits are even greater.
"Walking is simple, free, and medically by far the best prescription for the 21st century," says Professor Sir Muir Gray, chief knowledge officer of the NHS and director of the National Campaign for Walking.
It can help you lose weight, it reduces the risks of serious diseases such as diabetes and stroke, and it can help you feel and look better.
Walking not only brings health benefits to the individual, it can be a great way to spend time with your family. Walking and talking can make conversations between parents and children more relaxed.
"Many people find talking side by side as they walk, instead of face to face, much easier and more engaging," says Sir Muir.
Walking anywhere is good for you but walking in a natural environment is even better for you and your family.
"We now know that walking on the grimmest street is beneficial for your health as long as you're safe," says Sir Muir. "However, there are additional benefits from being surrounded by nature."
Research suggests that exposure to natural open spaces can have a wide range of health benefits. Being out in a natural environment can reduce stress, for example, and encourage people to be more active.
Where to go walking this summer
The UK's 15 National Parks are protected areas, where you can enjoy vast expanses of spectacular countryside.
See the National Parks' events page to find free guided walks and other activities for the whole family during the summer holidays. They include Dartmoor, the Brecon Beacons and the Cairngorms.
If you want to stay for one or more nights in a National Park, there are several budget options including camping at a campsite, wild camping and staying in a barn or hostel. For more information, see the National Parks' camping page.
The National TrustThe National Trust cares for some of the most stunning landscapes in the UK, including long stretches of the coastline.
You can download walking itineraries and find suggestions about free activities for the family on the website.
The Woodland TrustThe Woodland Trust organises guided walks, talks, tree planting and fundraising events in its woods across the UK. To find out about woods near you and the activities on offer this summer, visit the website.
The Forestry CommissionUse the Forestry Commission website to find out about woods and forests near you. You can search by type of activity - such as walking and cycling - and by location. The Forestry Commission also runs various events such as family bike rides and fitness days.
The Ramblers website is a very useful resource for information on all aspects of walking in Britain. The Walking for everyone section includes tips on making walking fun for kids, information on walking for people with disabilities and for people who have long-term conditions such as asthma and diabetes.
Accessible walksTo find walks that are accessible for people pushing buggies and for wheelchair users, see Walks with Buggies and Walks with Wheelchairs.
Walking for HealthUse the walk finder on the Walking for Health website to find out about your nearest health walk scheme. These are community schemes, designed to encourage people to go for more walks.