Routing walk-through?

Greetings, SWorkers

Does anybody knows a way to make a walk through using a routing sketch chain as constraint?

I know I'll probably need a single spline following the route sketch to guide the walk through, so: is there an relatively "easy" way to convert a chain of sketch segments into one 3D spline?

Bonus question: What if I wanted to be always looking tangent to the spline?

SolidworksRouting