Manchester derby the biggest in Europe

Europe's biggest derbies by combined average attendance 

1	Manchester United	75,387	Manchester City	47,044	122,431	4
2	Real Madrid	74,836	Atletico Madrid	45,236	120,072	4
3	FC Barcelona	78,340	RCD Espanyol	26,826	105,166	3.3
4	Milan	51,442	Internazionale	47,913	99,355	0
5	Celtic	50,904	Rangers	46,324	97,288	4
6	Arsenal	60,000	Tottenham Hotspur	36,026	96,026	3.8
7	Bayern Munich	69,000	TSV Munchen 1860	22,898	91,898	0
8	Liverpool	44,253	Everton	33,228	77,481	0.6
9	Benfica	42,464	Sporting CP	34,490	76,954	1.4
10	Hamburg SV	53,465	St. Pauli	23,220	76,685	3.6
11	Real Betis	37,405	Seville	35,684	73,089	2
12	Roma	35,240	Lazio	32,444	67,687	0
13	Chelsea	41,478	Fulham	25,293	66,771	1.4
14	Aston Villa	33,873	West Brom	24,793	58,666	3.3
15	VfB Stuttgart	55,090	Stuttgarter Kickers	3,561	58,651	3.3
16	Juventus	37,545	Torino	15,897	53,442	4.7
17	Feyenoord	44,605	Sparta Rotterdam	7,089	51,694	4.2

The table above shows Europe's biggest derbies based on combined average attendances throughout the 2011-2012 season (i.e. not just for the derby matches themselves but for all matches). I've defined a derby as a match between two teams whose stadiums are within 5 miles of each other. With a combined average attendance of 69,573 the derby between Hertha Berlin and Union Berlin would have made the list but the clubs' stadiums are 14.4 miles apart. I would be very interested to know if there are other derbies which people think would make the list based on these criteria. The stadiums of Borussia Dortmund and Schalke are 17 miles apart but their combined average attendance of 141,739 would make it the biggest derby in Europe. Newcastle United and Sunderland have a combined average attendance of 89,030 but their stadiums are 10 miles apart.