travel — to go from one place to another, as by car, train, plane, or ship; take a trip; journey: to travel for pleasure.
travelled — having traveled, especially to distant places; experienced in travel.
traveled — used or designed for use while traveling: a travel alarm clock.
traversable — to pass or move over, along, or through.
unblocked — to obstruct (someone or something) by placing obstacles in the way (sometimes followed by up): to block one's exit; to block up a passage.
unobstructed — to block or close up with an obstacle; make difficult to pass: Debris obstructed the road.
navigable — deep and wide enough to provide passage to ships: a navigable channel.
reachable — to get to or get as far as in moving, going, traveling, etc.: The boat reached the shore.
accessible — If a place or building is accessible to people, it is easy for them to reach it or get into it. If an object is accessible, it is easy to reach.
attainable — Something that is attainable can be achieved.