Advertised Distance is the distance a neighbor router says, or advertises, is the distance to a destination. This is key in electing a feasible successor or backup route. The lower the distance, the better. The lower the value the better the route is believable. These values can be changed with the distance command.
Administrative Distances
Protocol Distance Value
Connected Interface 0
Static routes 1
EIGRP Summary routes 5
EBGP 20
Internal EIGRP 90
IGRP 100
OSPF 110
RIP 120
EGP 140
External EIGRP 170
Internal BGP 200