Assuming you are referring to city blocks, 5 blocks is not a particularly long walk. It would depend on the size of the blocks as to how long it would take, but generally speaking, you could probably walk 5 city blocks in 15-20 minutes. If the weather is nice, it can be a pleasant stroll. However, if it's hot or cold outside, or if you're carrying heavy bags, 5 city blocks can feel like quite a distance.