Ooo a bit of low tide danger thrown in to the mix, I know that feeling as well. I did a hike in New Zealand which required low tides but I'll get to that at a later blog.
11km isn't too bad but I guess there's a lot of hills and all the hungry wildlife you mentioned... It may be a run instead of a hike!
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Hopefully only the low tide to contend with, never done the hike but it sure sounds good.
Wildlife is the least of ones worries, easier than dodging drivers on the roads.