South West Trains is advising marathon participants and spectators to check the latest information before they travel and allow extra time for their journey.

BBC: South West Train

This journey around the summit represented a huge investment of time and attention: 11 days (counting travel time) out of the President's jammed schedule, participation of several Cabinet Secretaries, 225 staff members, hundreds of military and security personnel, all pursued by more than 400 journalists.

CNN: Did The Summit Matter?

This fantasy journey around the UK and Europe is based on ticket prices currently available for travel in four weeks' time.

BBC: NEWS | UK | Magazine | A ?200 ticket to ride