If an oven is at 1300 deg F, what would the temp be 10 and 20 feet from oven?

ok, yes door open. no heat sink. no fan. no vacuum. room temp, 60 deg. inside normal house, no asbestos insulation, no it is not raining and it is a thursday. 4 nights past full moon....... if no one can give an exact answer, how about a estimate of how many deg would drop per 10 feet. I am not building a space craft, just trying to settle a $5 bar bet. or if it makes it simpler, how close could a person stand to a 1300 deg heat source before he got burned, giving that a person can get a burn at 130 deg