The trail follows the course of the Eastern Yar, the island's longest river, that flows from Niton, not far from the south coast, to Bembridge harbour on the eastern edge of the island; the Isle's other Yar, the Western Yar, meets the sea at Yarmouth. The Trail is waymarked and also features 20 stone-carved milestones and five, originally six, sculptures by local artist Paul Mason. It uses a variety of surfaces - mainly paths and the course of a dismantled railway. Alverstone, Newchurch, Godshill and Whitwell are passed en route.
In between those paths and sections of the old railway line there are a lot of farm fields, these can get very boggy in winter or after heavy rainfall, as can Brading Marshes.
https://ldwa.org.uk/ldp/members/show_path.php?menu_type=S&path_name=Yar+River+Trail