There is no known major fault line to exist in the Washington DC area.
Pennsylvania ave
Yes, Olympia, Washington is located near the Cascadia Subduction Zone, which is a major earthquake fault line. This fault line poses a significant seismic hazard to the Pacific Northwest region, including Olympia.
railroad
Washington dc
Yes, in fact there are many different rail lines. Amtrak trains pass through Washington DC and Virginia. The Washington DC Metro system has many stations in both Virginia and Washington DC. CSX and other cargo trains pass through DC and Virginia.
Consider using the MARC commuter line.
From Washington to Riyadh the distance is about 6742 miles or 10851 kilometers in a straight line.
Constitution Ave and K-St both do that, at least between the Potomac Freeway and 9th St.
Washington, DC
Washington DC
The straight line distance between Washington and Istanbul is approximately 5218 miles or 8397 kilometers.
Washington - Baltimore Washington International, DC, USA (BWI) Washington - Washington - All Airports, DC, USA (WAS) Washington - Ronald Reagan National Airport, DC, USA (DCA) Washington - Washington Dulles, DC, USA (IAD)