All the caches will require a bit of a hike, although, some will be short. Regardless, you will be out in nature, so be careful where you stick your hands. On hot days, make sure you have plenty of water and proper attire.
The spoiler photo is an extremely up close view of the hide. The hint is for the hide not for the puzzle. None of the hides should be difficult to discover once the coordinates are deduced. The posted coordinates are usually within a mile of the actual location.
Some of the hikes may be significant investment of time and effort. It would be a shame to be wrong ... Use the coordinate checker.