Primærrute 21 is a motorway in Denmark.


  • ExitR1 Hvidovre
  • Interchange Brøndby (E47/E55)
  • ExitR2 Brøndbyvester
  • ExitR3 Vallensbæk N
  • Interchange Vallensbæk (O4)
  • ExitR4 Roskildevej
  • ExitR5 Roskildevej
  • ExitR6 Høje Taastrup C
  • ExitR7a Høje Taastrup S
  • ExitR7b Baldersbrønde
  • ExitR8 Fløng
  • ExitR9 Trekroner
  • ExitR10 Roskilde Ø
  • ExitR11 Roskilde SØ
  • ExitR12 Roskilde S
  • ExitR13 Ringstedvej
  • ExitR14 Roskilde V
  • PARKINGWC Kornerup (eastbound only)
  • ExitR15 Gevninge
  • PARKINGWCI Torkildstrup
  • ExitR16 Kirke Sonnerup
  • ExitR17 Tølløse
  • PARKINGWC Arnakke
  • ExitR18 Holbæk Ø
  • ExitR19 Holbæk C
  • ExitR20 Holbæk V

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