Borussia Dortmund =========== 2190 km =========== FC Shakhtar Donetsk (Dortmund - Donetsk)
FC Schalke 04 ========== 2010 km ========== Galatasalay AŞ(Bochum - Istanbul)
Juventus ======= 1460 km ======= Celtic FC (Torino - Glasgow)
Manchester United ======= 1440 km ======= Real Madrid (Manchester - Madrid)
Paris Saint-German FC ===== 1000 km ===== Valencia CF (Paris - Valencia)
FC Bayern Munich ===== 893km ==== FC Arsenal (Munich - London)
Barcelona FC ==== 737 km === AC Milan (Barcelona - Milan)
Malaga CF === 623 km === FC Porto (Malaga - Porto)
Poor Malaga, they have to go for away game by coach after Arabian withdrew investment. maybe 3-5 years later, Big Man city and Big Paris will follow its bus tracks :)