Yes, they are technically for biking. Just be aware and listening for those and all should be fine
My wife and I go and run the trails very often, as long as you either keep your music turned down so you can hear or go without headphones you should be good to go.... Every MBer I have had interaction with has been very pleasent , just be aware of your surroundings.
They are technically Mountain Bike only trails, but as long as you are aware of your surroundings you should be ok.
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