Back to give this a bump. At first I thought your horizon was tilted a bit but then realize it's more illusion than reality. The trees do a great job of leading my eye to the subject. The little red ribbon pulls me away from your subject; this may be even more effective in B&W.
I often like people to be in landscape photos, but in this instance I feel that the photo would be far stronger without the runner. The little flash of red brings the image up to another level.