Remote is a synonym of Distant. Distant is a synonym of Extreme. Extreme is the opposite of Average. 
City is related to Environment. Land is part of Environment. Land is related to Road. Railroad is derived from Road. 
Remote <--Synonym--> Distant <--Synonym--> Extreme <--Antonym--> Average 
City <--RelatedTo--> Environment <--PartOf-- Land <--RelatedTo--> Road <--DerivedFrom-- Railroad 