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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~60 min
  • First departure05:22
  • Last departure21:34
  • Average ride~36 min
  • Stops50
  • Departures per day17
  • Route length21.2 km
  • Peak~51 min
  • Off-peak~29 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 50 stops per direction.The first departure is at 05:22, the last at 21:34.Departures run every ~60 min, and the ride takes ~36 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

05:22

Last

21:34

Departures

17

Line 637 timetable — on weekdays
052231
0629B49B
0715B49
0853
0953
Line 637 timetable — on Saturdays
0705
0905
1105
1305
1505
Line 637 timetable — on Sundays and holidays
0805
1005
1205
1405
Changed25.10.2026.
Checked25.10.2026.

Stops

50 stops~36 min in total

  1. Old Northern Rd opp Post Office Rd

    #215724 — Old Northern Rd opp Post Office Rd

    departure0min

  2. Old Northern Rd opp Whites Rd

    #215726 — Old Northern Rd opp Whites Rd

    +0 min0min

  3. Old Northern Rd after Harrisons Lane

    #215739 — Old Northern Rd after Harrisons Lane

    +1 min1min

  4. Old Northern Rd opp Knock Farrell Rd

    #215727 — Old Northern Rd opp Knock Farrell Rd

    +0 min1min

  5. Old Northern Rd before Munros Lane

    #215728 — Old Northern Rd before Munros Lane

    +0 min1min

  6. Old Northern Rd after Munros Lane

    #215729 — Old Northern Rd after Munros Lane

    +0 min1min

  7. Old Northern Rd opp Cattai Ridge Rd

    #215730 — Old Northern Rd opp Cattai Ridge Rd

    +1 min2min

  8. Old Northern Rd after Muscios Lane

    #215731 — Old Northern Rd after Muscios Lane

    +0 min2min

  9. Old Northern Rd after Wylds Rd

    #215732 — Old Northern Rd after Wylds Rd

    +1 min3min

  10. Old Northern Rd opp Bangor Rd

    #215733 — Old Northern Rd opp Bangor Rd

    +0 min3min

  11. Old Northern Rd opp Garemyn Rd

    #215735 — Old Northern Rd opp Garemyn Rd

    +1 min4min

  12. Old Northern Rd at Edwards Rd

    #215871 — Old Northern Rd at Edwards Rd

    +0 min4min

  13. Old Northern Rd after Edwards Rd

    #215872 — Old Northern Rd after Edwards Rd

    +0 min4min

  14. Mid Dural Rd opp Middle Dural Public School

    #215879 — Mid Dural Rd opp Middle Dural Public School

    +1 min5min

  15. Mid Dural Rd at Johnson Rd

    #215979 — Mid Dural Rd at Johnson Rd

    +2 min7min

  16. Mid Dural Rd after Johnson Rd

    #215980 — Mid Dural Rd after Johnson Rd

    +0 min7min

  17. Galston Rd after Glen St

    #215914 — Galston Rd after Glen St

    638+1 min8min

  18. Galston Rd at Arcadia Rd

    #215915 — Galston Rd at Arcadia Rd

    638+1 min9min

  19. Galston Rd opp Arcadia Rd

    #215970 — Galston Rd opp Arcadia Rd

    638+0 min9min

  20. Galston Rd opp Glen St

    #215971 — Galston Rd opp Glen St

    638+0 min9min

  21. Galston Rd after Mid Dural Rd

    #215982 — Galston Rd after Mid Dural Rd

    638+1 min10min

  22. Galston Rd opp Galston Recreation Reserve

    #215983 — Galston Rd opp Galston Recreation Reserve

    638+0 min10min

  23. Galston High School, Galston Rd

    #2159102 — Galston High School, Galston Rd

    638+1 min11min

  24. Galston Rd before Carters Rd

    #215880 — Galston Rd before Carters Rd

    638+1 min12min

  25. Galston Rd after Carters Rd

    #215881 — Galston Rd after Carters Rd

    638+1 min13min

  26. Galston Rd at Uralla Rd

    #215882 — Galston Rd at Uralla Rd

    638+0 min13min

  27. Galston Rd opp St Judes Tce

    #215848 — Galston Rd opp St Judes Tce

    638+1 min14min

  28. Old Northern Rd after Galston Rd

    #2158108 — Old Northern Rd after Galston Rd

    638+1 min15min

  29. St Judes Anglican Church Cemetery, Old Northern Rd

    #2158120 — St Judes Anglican Church Cemetery, Old Northern Rd

    638+0 min15min

  30. Old Northern Rd opp Dural Public School

    #2158135 — Old Northern Rd opp Dural Public School

    638+1 min16min

  31. Redfield College, Old Northern Rd

    #2158106 — Redfield College, Old Northern Rd

    638+1 min17min

  32. Old Northern Rd before New Line Rd

    #2158104 — Old Northern Rd before New Line Rd

    638+1 min18min

  33. Old Northern Rd opp Derriwong Rd

    #215817 — Old Northern Rd opp Derriwong Rd

    604638642X+1 min19min

  34. 775 Old Northern Rd

    #215818 — 775 Old Northern Rd

    604638642X+1 min20min

  35. Old Northern Rd opp Stonelea Cct

    #215820 — Old Northern Rd opp Stonelea Cct

    638639641+1 min21min

  36. Old Northern Rd after Franlee Rd

    #215821 — Old Northern Rd after Franlee Rd

    638+0 min21min

  37. Old Northern Rd opp Malabar Rd

    #215822 — Old Northern Rd opp Malabar Rd

    638+1 min22min

  38. Old Northern Rd opp Lorien Novalis School

    #215823 — Old Northern Rd opp Lorien Novalis School

    638+0 min22min

  39. Old Northern Rd opp Glenhaven Rd

    #215614 — Old Northern Rd opp Glenhaven Rd

    638+1 min23min

  40. Old Northern Rd after Blue Gum Dr

    #215616 — Old Northern Rd after Blue Gum Dr

    638+0 min23min

  41. 593 Old Northern Rd

    #215618 — 593 Old Northern Rd

    638+1 min24min

  42. Old Northern Rd opp Gilbert Rd

    #215619 — Old Northern Rd opp Gilbert Rd

    638+0 min24min

  43. Old Northern Rd after Hastings Rd

    #2154179 — Old Northern Rd after Hastings Rd

    603604+2 min26min

  44. 523 Old Northern Rd

    #2154180 — 523 Old Northern Rd

    603604+1 min27min

  45. Oakhill College, Old Northern Rd

    #2154121 — Oakhill College, Old Northern Rd

    603604+2 min29min

  46. St Pauls Church, Old Northern Rd

    #2154181 — St Pauls Church, Old Northern Rd

    603+1 min30min

  47. Old Northern Rd at Castle Hill Rd

    #2154182 — Old Northern Rd at Castle Hill Rd

    603632635+1 min31min

  48. Old Northern Rd after Telfer Rd

    #2154187 — Old Northern Rd after Telfer Rd

    600603626632633635+1+2 min33min

  49. St Bernadette's Primary School, Old Northern Rd

    #2154188 — St Bernadette's Primary School, Old Northern Rd

    600603626632633635+1+0 min33min

  50. Castle Hill Station, Old Northern Rd, Stand B

    #2154396 — Castle Hill Station, Old Northern Rd, Stand B

    634635660662+3 min36min

Frequently asked questions

When are the first and last departures of line 637?

On weekdays the first departure from Old Northern Rd opp Post Office Rd is at 05:22 and the last at 21:34. There are 17 departures in total.

Does line 637 run on weekends?

Yes — on Saturday from 07:05 to 19:05 and on Sunday from 08:05 to 14:05.

Does line 637 run on Sundays?

Yes. On Sundays line 637 has 4 departures from Old Northern Rd opp Post Office Rd, the first at 08:05 and the last at 14:05.

How often does line 637 run?

Departures run about every 60 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 36 minutes on average — from about 29 minutes off-peak to about 51 minutes at peak.

How many stops does line 637 have?

In the Old Northern Rd opp Post Office Rd → Castle Hill Station, Old Northern Rd, Stand B direction, line 637 has 50 stops.

How long is the route of line 637?

The route in this direction is about 21.2 km long.