Here is the steps to configure the access point/bridge distance setting
Step 1 configure terminal for Enter global configuration mode.
Step 2 interface dot11radio 0 for Enter interface configuration mode for the radio interface.
Step 3 distance kilometers for Enter a distance setting from 0 to 99 km.
Step 4 end for Return to privileged EXEC mode.
Step 5 copy running-config startup-config for (Optional) Save your entries in the configuration file.
I hope it may help you.