16км9м+16км991м

To add these two distances, we need to first convert them into the same unit.

16 km 9 m = 16,009 m 16 km 991 m = 16,991 m

Now, we can add these two distances together:

16,009 m + 16,991 m = 33,000 m

Therefore, the total distance is 33 kilometers.