Tyne Riverside Country Park - We understand that much of the area near the river is flat with surfaced paths and access for wheelchair or buggy users is quite good.  "Tyne Riverside Country Park follows the River Tyne for four miles through 200 acres of meadows, chalk grassland, woodland and river bank" "Explore the park on foot or bicycle along Hadrian’s Cycleway or Hadrian’s Wall Path National Trail, or by following one of the many other paths and trails through the park." - from the Northumberland County Council website