And the group mentality may explain why marathon running has become increasingly popular.

Online fundraising pages have become very popular for people taking part in activities such as marathon running.

By chance the tiny Palestinian territory is almost 26 miles long, making it ideal for marathon running.

Jones also understands that marathon running is not life and death.

There have been frequent references in the show to Bob's marathon running.

American marathon running has been going through lean years.

But he was also prepared for some of the more common problems associated with marathon running.

For most people, medical school and marathon running are full-time occupations.

Nor is age necessarily an impediment when it comes to marathon running.

The first was about marathon running, the second Alzheimer's disease.