Some sections require an entrance permit if you hike northbound. This limitation applies to section 1, 2-3 and 12and the long distance challange 2/3. Without an entrance permit you may be “kicked out” but if you walk southbound this means leaving the property in the direction that you are hiking anyway.
Also for If you are hiking with a packraft section 11 the , 17 and 18 need to be taken southbound limitation applies but for a different reason. Only in this direction you can float down the river Caucuá rivers with your packraftin the flow direction. If you want to hike section 11 northbound you need to take When hiking without a rather boring dirt road with moderate trafficpackraft these section can be taken in either direction using the alternative hiking trails.