Bus Number 21L (Limited) starts from RC Church and goes upto Trombay. Below is the Bus route for 21 Limited.
| Bus Route 21 Limited | |
| 1. R.C.CHURCH, | 2. INS ASHWINI HOSPITAL, |
| 3. PILOT BUNDER, | 4. AFGHAN CHURCH, |
| 5. COLABA POST OFFICE, | 6. COLABA BUS STATION, |
| 7. SASOON DOCK, | 8. STRAND CINEMA, |
| 9. COLABA DEPOT, | 10. DR.S.P.MUKHERJI CHOWK \ MUSEUM, |
| 11. HUTATMA CHOWK, | 12. KHADI BHANDAR, |
| 13. MUMBAI C.S.T., | 14. MAHATMA PHULE MARKET, |
| 15. CHAKALA MARKET, | 16. ZAKERIA MASJID, |
| 17. JOHAR CHOWK, | 18. DR.M.IQBAL CHOWK, |
| 19. A.H.ANSARI CHOWK, | 20. BYCULLA STATION (E), |
| 21. JIJAMATA UDYAN, | 22. JAIHIND CINEMA, |
| 23. SANT JAGNADE CHOWK / LALBAUG, | 24. MADKEBUWA CHOWK / PAREL, |
| 25. HINDMATA CINEMA, | 26. KHODADAD CIRCLE, |
| 27. KAPOLE NIWAS / J.N.VARMA CHOWK, | 28. MAHESHWARI UDYAN, |
| 29. GANDHI MARKET MATUNGA, | 30. LOKMANYA TILAK HOSPITAL, |
| 31. RANI LAXMIBAI CHOWK / SION, | 32. EVERARD NAGAR, |
| 33. PRIYADARSHANI CHUNA BHATTI, | 34. SUMAN NAGAR, |
| 35. UMARSHI BAPPA CHOWK, | 36. BHAKTI BHAVAN, |
| 37. BASANT PARK, | 38. NAVJEEVAN SOCIETY CHEMBUR, |
| 39. CHEMBUR COLONY, | 40. R.C.F.COLONY / GOLF CLUB, |
| 41. WADAVLI VILLAGE / BORLA SOCIETY, | 42. BASANT TALKIES, |
| 43. PANJARA POL, | 44. DEONAR DEPOT, |
| 45. TELECOM FACTORY, | 46. RAJ KAPOOR CHOWK / BHABHA HOSPITAL, |
| 47. ANUSHAKTI NAGAR, | 48. MANKHURD STATION ROAD (S), |
| 49. MANDALA, | 50. NARMADESHWAR MANDIR, |
| 51. CHEETA CAMP (TROMBAY), | 52. DHOBI GHAT (TROMBAY), |
| 53. TROMBAY, |
