Hi there . Your symptoms correlate to disease known as cervical spondylitis and radiculopathy. This means that your neck bones are degenerating and there is pressure on the nerve roots of neck region. I would suggest you to definitely postpone the walk for a couple of days till the symptoms subside. Good thing about this disease is that symptoms do regress. Treatment: Anti inflammatory like nucoxia mr Neurotropic like pregablin Short wave diathermy and diclofenac gel massage. When the pain subsides do start cervical isometric exercises. ...go to a physiotherapy clinic for that. I hope my advice has helped. Good luck