From Étretat you can walk along the cliffs either north or south. When walking south, you’ll reach the estuary of the river Seine and Le Havre.
In northern direction, you can get to Yport or Fécamp. It’s a very nice path along the cliff. The ocean to your left and farmlands to your right. You can get on the track easily from the promenade of Étretat. On both sides of the beach, there are paths and stairs to reach the top of the cliff.
It’s about 9 km from Étretat to Yport and another 9 km from Yport to Fécamp.
A warning: have an eye for the edge of the cliff. The path is often very near to the edge of the cliff. So, you might come in danger of falling down, when the soil under the grass is rinsed or eroded. A chalk cliff is very soft and gives room to wind and rain very easy.
Take care!
MyBlog - solaner 
Wonderful images .. I think you would have to be very careful walking close to that cliff!
Thanks, Julie. Ans, as I said, it’s very, very important to be extremely careful at the cliffs.