RE/MAX Champions Share: Real Estate & Related Services RE/MAX Champions Visit Website 121 S. Mountain Ave. Upland, California 91786 909-471-1803 About Map About Ontario Ranch Real Estate Expert! Introducing families to our beautiful growing city and it's charm. Working to make the City of Ontario a better place. LIVE & WORK in the City of Ontario! What's Nearby? Distance: 5 10 15 20 25 50 mi.