A trekking permit is required to trek in any part of Nepal which is covered by national park and conservation. If you want to hike two different areas such as Annapurna and Everest, you will need to get two permits. Each permit requires details for thetrekking route and region. Police checks points are set up in different areas so do not venture off the set route unless you carry cigarettes for officers.
For recent update Special trekking permit fees please open Trekking Permit Fees for more details.