Lord of Speed

You can move faster than humanly possible. You have a ground speed of 10 MPH at rank 1. Each additional level moves your speed one step up the Time and Value Progression Table. For every five levels you gain an extra attack per attack you can take however these attacks must only be used while unarmed or using improvised weapons. 

At level 2 you become a blur to the human eye, creatures attempting to perceive you while you are moving do so at disadvantage.

At level 5, You can run up and down walls and other vertical surfaces as long as you are in continuous movement. you can run across liquid surfaces, including water, acid, and lava, as long as you keep moving. If you run across acid or lava, you take 2d8 damage for every 10 feet moved across the liquid that round. If you end your turn on a liquid surface, you fall in and take damage or other effects as appropriate.

At Level 10, You gain the ability to phase through objects and may phase others through objects if they are grappled. This allows you to move through solid matter as if it were not there. You cannot end your turn inside an object. If you do, you are immediately shunted to the nearest unoccupied space and take force damage equal to 1d10 for every 5 feet you are moved if used on an enemy they take 1d10 damage and are immediately shunted to the nearest unoccupied space.

At level 11 you become completely imperceptible while moving a creature has a minus 5 in attempts to perceive you (this applies to passive perception).

footnote: The speed of light is 163,928,509 Feet per round. The speed of sound is 187.5 Feet per round.

For those that use physics the way this would work is as follows 

A speedster with the ability to vibrate their molecules can manipulate the intermolecular bonds within and around them, leading to effects such as phasing through objects and molecular combustion. This advanced control allows them to mitigate collateral damage while moving at high velocities. For instance, they can run through a group of armed men, knocking them over without harming allies. Additionally, they are unaffected by the friction and air resistance that would typically cause severe injuries at high speeds. This implies an ability to create a protective field around themselves and their passengers, shielding them from the adverse effects of rapid movement.

The speedster perceives the world in a near-frozen state due to their accelerated reaction time and perception, effectively slowing down their own experience of time. This altered perception allows them to perform feats such as running up walls, as gravity's influence becomes negligible. The typical consequences of high-speed travel—kinetic energy, inertia, friction, and pressure—are rendered insignificant at these extreme velocities. Consequently, the speedster does not feel the mass or heft of objects they interact with. Explosions and other fast-moving phenomena appear almost stationary from their perspective, showcasing their ability to move and react in ways that defy conventional physics.