Minecraft is absolutely huge, and very few would argue with that. With enough time, players can build expansive worlds with interconnecting cities, landmarks, and other features, but getting between the two can be difficult. The Nether has always been one common solution players have used for traveling between their creations more quickly, but now it's even faster.
It's probably common knowledge for most veteran Minecraft players by now, but newer players may not be aware of this peculiar fact about the Nether. In this dimension, space is scaled down by a ratio of 8:1. This means that for every one block travelled in the Nether, eight blocks are traversed in the Overworld.
Players have often used this to their advantage, building two Nether Portals in key locations, connecting the two with a tunnel, and then using them to safely travel across the world eight times faster than would otherwise be possible, but the Soul Speed enchantment makes this even faster.
The Soul Speed enchantment increases the player's movement speed when moving on Soul Sand or Soul Soil, and has a maximum of three enchantment levels (with the increase to speed going up with each level). Players can essentially build the exact same tunnels which they had made use of previously, but if they make the floor one of these two types of materials, they will move faster when using the enchantment. Soul Soil is easily the better option, as it does not slow the player down should they not have access to the Soul Speed enchantment yet.
There are some major drawbacks to this, however. For one, obtaining large amounts of Soul Soil will definitely be a bit harder than building the floor out of dirt or cobblestone, but even beyond that there are a few issues. The Soul Speed enchantment has a chance to deal durability damage to the player's boots as they run across Soul Sand or Soul Soil, meaning players may end up needing to repair these boots a lot. Furthermore, the enchantment can only be obtained through trading with Piglins or raiding Bastion Remnants.
Nonetheless, this enchantment can allow for up to a 27.5% increase to speed, making traveling through the Nether more than 10 times faster than the overworld rather than 8 times. It would also be a neat idea to put an Ender Chest at either end of the tunnel so that multiple players can make use of the same pair of enchanted boots (preferably diamond and with Unbreaking as well).
Minecraft is available now for Mobile, PC, PS4, Switch, and Xbox One.
Source: Minecraft Wiki