The Institute of Fundraising has produced a new code of practice for outdoor fundraising events to minimise their damage to the environments they operate in.
Following consultation with the Association of National Park Authorities, the institute created the leaflet, UK Charity Challenge Events, which addresses issues arising from events such as the Three Peaks challenge, held in the protected hills and mountains of national parks such as the Lake District and Snowdonia.
It seeks to limit the effect of disruption to local people when large groups descend on protected countryside areas and looks at congestion, pollution and personal safety issues.
"Applying best practice in fundraising is an essential part of any charity's responsibilities," said Lindsay Boswell, chief executive of the institute.
"By linking up with the National Park Authorities we have been able to set standards that maintain the good name of charities and urge all future events to comply with these common sense steps."