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Sydney · bus timetable

Bus 637 Castle Hill Station, Old Northern Rd, Stand A Old Northern Rd at Post Office Rd

Bus Regular line Operator: CDC NSW R4

The Castle Hill Station, Old Northern Rd, Stand A – Old Northern Rd at Post Office Rd route is served by line 637, on weekdays from 06:58 to 21:55, every ~34 min.

  • Headway~34 min
  • First departure06:58
  • Last departure21:55
  • Average ride~32 min
  • Stops51
  • Departures per day20
  • Route length20.8 km
  • Peak~46 min
  • Off-peak~15 min
  • Saturday7 departures
  • Sunday4 departures

Bus of Sydney public transport — connects Castle Hill Station, Old Northern Rd, Stand A and Old Northern Rd at Post Office Rd, with 51 stops per direction.The first departure is at 06:58, the last at 21:55.Departures run every ~34 min, and the ride takes ~32 min on average.

Routes in this direction

Most departures take route A. Some take a different route — pick one to see it on the map, in the timetable and in the stop list.

B next to a time = that departure takes this route

Timetable

First

11:30

Last

17:30

Departures

4

Line 637 timetable — on weekdays
0658
0705
0818B
0914
1014B
Line 637 timetable — on Saturdays
0830
1030
1230
1430
1630
Line 637 timetable — on Sundays and holidays
1130
1330
1530
1730
Changed25.10.2026.
Checked25.10.2026.

Stops

51 stops~32 min in total

  1. Castle Hill Station, Old Northern Rd, Stand A

    #2154394 — Castle Hill Station, Old Northern Rd, Stand A

    600603604626632633+6departure0min

  2. Old Northern Rd opp St Bernadette's Primary School

    #2154193 — Old Northern Rd opp St Bernadette's Primary School

    600603626632633635+1+1 min1min

  3. Old Northern Rd opp Castle Hill Rd

    #2154174 — Old Northern Rd opp Castle Hill Rd

    603632635+1 min2min

  4. Old Northern Rd opp St Pauls Church

    #2154175 — Old Northern Rd opp St Pauls Church

    603+1 min3min

  5. Old Northern Rd opp Oakhill College

    #2154176 — Old Northern Rd opp Oakhill College

    603604+1 min4min

  6. 372 Old Northern Rd

    #2154364 — 372 Old Northern Rd

    603604+1 min5min

  7. Old Northern Rd opp Hastings Rd

    #2154177 — Old Northern Rd opp Hastings Rd

    603604+0 min5min

  8. Old Northern Rd before Gilbert Rd

    #2154178 — Old Northern Rd before Gilbert Rd

    603638+1 min6min

  9. 402 Old Northern Rd

    #215611 — 402 Old Northern Rd

    638+1 min7min

  10. 410 Old Northern Rd

    #215617 — 410 Old Northern Rd

    638+0 min7min

  11. Old Northern Rd before Blue Gum Dr

    #215612 — Old Northern Rd before Blue Gum Dr

    638+0 min7min

  12. Old Northern Rd at Glenhaven Rd

    #215613 — Old Northern Rd at Glenhaven Rd

    638+1 min8min

  13. Lorien Novalis School, Old Northern Rd

    #215811 — Lorien Novalis School, Old Northern Rd

    638+1 min9min

  14. Old Northern Rd after Malabar Rd

    #215812 — Old Northern Rd after Malabar Rd

    638+1 min10min

  15. Round Corner Shops, Old Northern Rd

    #215813 — Round Corner Shops, Old Northern Rd

    604638639641642X+1 min11min

  16. Old Northern Rd after Kenthurst Rd

    #215814 — Old Northern Rd after Kenthurst Rd

    604638642X+1 min12min

  17. 566 Old Northern Rd

    #215815 — 566 Old Northern Rd

    604638642X+0 min12min

  18. Old Northern Rd before Derriwong Rd

    #215816 — Old Northern Rd before Derriwong Rd

    604638642X+1 min13min

  19. Old Northern Rd opp Quarry Rd

    #215856 — Old Northern Rd opp Quarry Rd

    638+1 min14min

  20. Old Northern Rd opp Redfield College

    #215858 — Old Northern Rd opp Redfield College

    638+1 min15min

  21. Dural Public School, Old Northern Rd

    #215859 — Dural Public School, Old Northern Rd

    638+1 min16min

  22. Dural Post Office, Old Northern Rd

    #215860 — Dural Post Office, Old Northern Rd

    638+1 min17min

  23. Galston Rd at St Judes Tce

    #215842 — Galston Rd at St Judes Tce

    638+0 min17min

  24. Galston Rd opp San Remo Pl

    #215843 — Galston Rd opp San Remo Pl

    638+1 min18min

  25. Galston Rd opp Uralla Rd

    #215845 — Galston Rd opp Uralla Rd

    638+1 min19min

  26. 426 Galston Rd

    #215847 — 426 Galston Rd

    638+1 min20min

  27. Galston Rd opp Galston High School

    #2159104 — Galston Rd opp Galston High School

    638+0 min20min

  28. 406 Galston Rd

    #215912 — 406 Galston Rd

    638+1 min21min

  29. Galston Rd at Mid Dural Rd

    #215913 — Galston Rd at Mid Dural Rd

    638+0 min21min

  30. Galston Rd after Glen St

    #215914 — Galston Rd after Glen St

    638+1 min22min

  31. Galston Rd at Arcadia Rd

    #215915 — Galston Rd at Arcadia Rd

    638+0 min22min

  32. Galston Rd opp Arcadia Rd

    #215970 — Galston Rd opp Arcadia Rd

    638+0 min22min

  33. Galston Rd opp Glen St

    #215971 — Galston Rd opp Glen St

    638+1 min23min

  34. Mid Dural Rd before Johnson Rd

    #215978 — Mid Dural Rd before Johnson Rd

    +0 min23min

  35. Middle Dural Public School, Mid Dural Rd

    #215878 — Middle Dural Public School, Mid Dural Rd

    +3 min26min

  36. 796 Old Northern Rd

    #215825 — 796 Old Northern Rd

    +0 min26min

  37. 1285 Old Northern Rd

    #215826 — 1285 Old Northern Rd

    +0 min26min

  38. Old Northern Rd opp Edwards Rd

    #215827 — Old Northern Rd opp Edwards Rd

    +1 min27min

  39. Old Northern Rd after Garemyn Rd

    #2158149 — Old Northern Rd after Garemyn Rd

    +0 min27min

  40. Old Northern Rd after Bangor Rd

    #215831 — Old Northern Rd after Bangor Rd

    +0 min27min

  41. Old Northern Rd at Bangor Rd

    #215833 — Old Northern Rd at Bangor Rd

    +1 min28min

  42. Old Northern Rd opp Wylds Rd

    #215711 — Old Northern Rd opp Wylds Rd

    +0 min28min

  43. Old Northern Rd before Pinus Ave

    #215712 — Old Northern Rd before Pinus Ave

    +1 min29min

  44. Old Northern Rd before Cattai Ridge Rd

    #215713 — Old Northern Rd before Cattai Ridge Rd

    +0 min29min

  45. Old Northern Rd after Cattai Ridge Rd

    #215749 — Old Northern Rd after Cattai Ridge Rd

    +1 min30min

  46. 892 Old Northern Rd

    #215714 — 892 Old Northern Rd

    +0 min30min

  47. Old Northern Rd opp Munros Lane

    #215715 — Old Northern Rd opp Munros Lane

    +0 min30min

  48. Old Northern Rd before Knock Farrell Rd

    #215716 — Old Northern Rd before Knock Farrell Rd

    +1 min31min

  49. Old Northern Rd before Whites Rd

    #215750 — Old Northern Rd before Whites Rd

    +0 min31min

  50. Old Northern Rd before Post Office Rd

    #215717 — Old Northern Rd before Post Office Rd

    +1 min32min

  51. Old Northern Rd at Post Office Rd

    #215718 — Old Northern Rd at Post Office Rd

    +0 min32min

Frequently asked questions

When are the first and last departures of line 637?

On weekdays the first departure from Castle Hill Station, Old Northern Rd, Stand A is at 06:58 and the last at 21:55. There are 20 departures in total.

Does line 637 run on weekends?

Yes — on Saturday from 08:30 to 20:30 and on Sunday from 11:30 to 17:30.

Does line 637 run on Sundays?

Yes. On Sundays line 637 has 4 departures from Castle Hill Station, Old Northern Rd, Stand A, the first at 11:30 and the last at 17:30.

How often does line 637 run?

Departures run about every 34 minutes (median headway between 06:00 and 21:00 on weekdays). It is denser at peak and sparser in the evening and at weekends.

How long is the ride on line 637?

The whole ride takes about 32 minutes on average — from about 15 minutes off-peak to about 46 minutes at peak.

How many stops does line 637 have?

In the Castle Hill Station, Old Northern Rd, Stand A → Old Northern Rd at Post Office Rd direction, line 637 has 51 stops.

How long is the route of line 637?

The route in this direction is about 20.8 km long.