Hi Bronco,
That question is simple enough, however the answer has many parts.
What receiver is used (quality)
What radio is used.
What The terrain is (flat ,open)or(full of trees and obstacles)
Quality of components used on the bird.
Whether you have a high gain receiver on your goggles or not
And yes ,even the weather can affect range.
Conclusion(generally) if your position is in the middle of the flying field.
300ft to the left of you 300ft to the right 150 up
Peace and progress.
Keith