I have read that BATS/Chi-X Europe routes orders to other EU equity venues. How can I determine what that list of venues is?
It is explained on their website. Just look for the word "routing" on the Features page:
Choose Your Venues
Group 1: Bats Europe
Start with the deep liquidity of Bats Europe’s dark and lit order books.
Group 2: Liquidity Partner (LP)
Add this group to access dark pool liquidity.
Group 3: Exchanges and MTFs
Choose to access additional Exchanges and MTFs across Europe.
London Stock Exchange, Borsa Italiana, Deutsche Börse, Euronext, SIX Swiss Exchange, Nasdaq OMX, Turquoise and Wiener Börse.