What will be the real voltage along the line with a voltage source and a capacitor?
What looks like a 'line' running from your voltage source, past your resistors, to your capacitor isn't. It's a NODE. The simulator models it as a single connection point, with a single voltage. You could redraw that circuit by changing the order of the components, making that line wiggly or very long, and the simulator will treat it in exactly the same way.

If you want to describe a physical conductor, perhaps 1m of copper wire 1mm2 area, then as a first order approximation, valid for DC, you can model that as a series resistor of 0.017ohms.

If you want better (more realistic, matching what real wires do at higher frequencies) models, then adding some series inductance, or using a transmission line of a suitable impedance would be the things to do.

We always try to use the simplest model that describes what we need describing, and nothing more.