Like cameras, it is possible to import splines into Unreal Engine. You can use copy/paste

You can copy/paste splines and curves with the buttons:

• "Copy active spline for Unreal" or "Copy selected spline(s) for Unreal"
• Use CTRL+V in Unreal actor components to paste it as a component. You can also paste it in a Blueprint actor.

• Bezier and Poly curves work natively in Unreal Engine, but NURBS curves will be resampled. Resampled curves require a lot more points. The addon resample the curve at export using a resolution of 12 between the points.
  So if you can, I recommend not using NURBS curves to avoid altering the optimization of your game.

Bezier in Blender	NURBS curves in Blender	Poly curves in Blender
Bezier in Unreal Engine	NURBS curves in Unreal Engine	Poly curves in Unreal Engine

• The addon cannot calculate the constant length with the same precision as in Unreal Engine.
  So I recommend you to calculate it with a simple edit as in this gif:

• Download:
• AssetsExample_Splines.blend