21 City Centre - City Centre via Birchgrove, Pantmawr

A bus service operated by Cardiff Bus

Cardiff Castle Events 2026

Due to concerts at Cardiff Castle, Castle Street will close and buses will use different city centre bus stops. We encourage you to check with your bus operator to see how services will run on the following dates:

CARDIFF CASTLE EVENT DATES:
June - Tuesday 30th (Tuesday 30th June please see Bute Park event notice)

July - Saturday 4th (Saturday 4th July please see Bute Park event notice), Thursday 9th, Friday 10th, Saturday 11th,Thursday 16th, Saturday 18th, Friday 24th, Saturday 25th, Sunday 26th, Thursday 30th & Friday 31st

August - Saturday 1st, Sunday 2nd, Friday 14th & Saturday 15th

Please also check other notices for Cardiff Castle events, and Principality Stadium events as these may affect your journey on other dates.

Services 21, 23 and 27 from 21:00 until last bus:
From City - Buses will start at Greyfriars Road, stop GL (near to the New Theatre).
Towards City - Buses will terminate at Greyfriars Road.

Buses will not serve Cardiff Bus Interchange, Westgate Street or Kingsway.

cardiffbus.com/cardiff-castle-bute-park-concerts-summer-2026

Bute Park Events 2026
16:00 – 23:59, Saturday 4 July 2026

Due to concerts at Bute Park, surrounding roads will close and buses will use different city centre bus stops. We encourage you to check with your bus operator to see how services will run on the following dates:

BUTE PARK CONCERT DATES:
June - Tuesday 30th
July - Wednesday 1st & Saturday 4th

Please also see other notices for Cardiff Castle events, and Principality Stadium events as these may affect your journey on other dates.

Routes 21, 23, 24 (from City), 25 (towards City), 27, 35, 86 and 136

From 16:00 until last bus
From City - Buses will start from Greyfriars Road, stop GL (near to the New Theatre) then divert via Park Place & Colum Road.
Towards City - Buses will divert via Colum Road & Park Place then terminate on Greyfriars Road.

Buses will not serve Cardiff Bus Interchange, Westgate Street, Kingsway or North Road.

cardiffbus.com/cardiff-castle-bute-park-concerts-summer-2025

cardiffbus.com/cardiff-castle-bute-park-concerts-summer-2026

Cardiff Bus Interchange Bay 4 07:0007:2708:1008:4509:1509:4510:1510:4511:1511:4512:1512:4513:1513:4514:1514:4515:1515:5016:2016:5017:2517:5518:4019:3520:3521:35
Cardiff, o/s Westgate Street KN 07:0007:2808:1108:4609:1609:4610:1610:4611:1611:4612:1612:4613:1613:4614:1614:4615:1615:5116:2116:5117:2617:5618:4119:3620:3621:36
Cardiff Castle, o/s Kingsway GA 07:0207:3008:1308:4809:1809:4810:1810:4811:1811:4812:1812:4813:1813:4814:1914:4915:1915:5416:2416:5417:2917:5918:4319:3820:3821:38
Cathays Park, before Corbett Road 07:0407:3308:1608:5009:2009:5010:2010:5011:2011:5012:2012:5013:2013:5014:2214:5215:2215:5716:2716:5717:3218:0218:4619:4120:4021:40
Blackweir (o/s) 07:0707:3508:1908:5309:2309:5310:2310:5311:2311:5312:2312:5313:2313:5314:2514:5515:2516:0016:3017:0017:3518:0518:4919:4420:4321:43
Maindy Stadium (opp) 07:0807:3708:2108:5409:2409:5410:2410:5411:2411:5412:2412:5413:2413:5414:2614:5615:2616:0116:3117:0117:3618:0618:5119:4520:4421:44
Maindy, after Parkfield Place 07:0807:3808:2208:5509:2509:5510:2510:5511:2511:5512:2512:5513:2513:5514:2814:5815:2816:0316:3317:0317:3818:0818:5219:4620:4521:45
Gabalfa, o/s North Road Clinic 07:0907:3908:2308:5609:2609:5610:2610:5611:2611:5612:2612:5613:2613:5614:2914:5915:2916:0416:3417:0417:3918:0918:5319:4720:4621:46
Birchgrove, before Cross Inn 07:1207:4208:2708:5909:2909:5910:2910:5911:2911:5912:2912:5913:2913:5914:3315:0315:3316:0816:3817:0817:4318:1318:5719:5120:4921:49
Birchgrove Stop 1 (o/s Principality) 06:4007:1307:4308:2809:0009:3010:0010:3011:0011:3012:0012:3013:0013:3014:0014:3415:0415:3416:0916:3917:0917:4418:1418:5819:5220:5021:50
Birchgrove, after Pantbach Avenue 06:4107:1407:4408:2909:0109:3110:0110:3111:0111:3112:0112:3113:0113:3114:0114:3515:0515:3516:1016:4017:1017:4518:1518:5919:5320:5121:51
Birchgrove, before Welwyn Road 06:4207:1507:4608:3109:0309:3310:0310:3311:0311:3312:0312:3313:0313:3314:0314:3715:0715:3716:1216:4217:1217:4718:1719:0019:5420:5221:52
Birchgrove, before Kyle Avenue 06:4307:1607:4708:3209:0509:3510:0510:3511:0511:3512:0512:3513:0513:3514:0514:3815:0815:3816:1316:4317:1317:4818:1819:0119:5520:5321:53
Rhiwbina Station (before) 06:4407:1807:4908:3409:0709:3710:0710:3711:0711:3712:0712:3713:0713:3714:0714:4015:1015:4016:1516:4517:1517:5018:2019:0319:5720:5421:54
Rhiwbina, o/s Olive Branch 06:4407:1807:5008:3509:0809:3810:0810:3811:0811:3812:0812:3813:0813:3814:0814:4015:1115:4116:1616:4617:1617:5118:2119:0319:5720:5421:54
Rhiwbina, after Lon-y-Rhyd 06:4607:2007:5108:3609:0909:3910:0910:3911:0911:3912:0912:3913:0913:3914:0914:4215:1215:4216:1716:4717:1717:5218:2219:0519:5920:5521:55
Rhiwbina, after Heol y Deri 06:4707:2007:5208:3709:1009:4010:1010:4011:1011:4012:1012:4013:1013:4014:1014:4315:1315:4316:1816:4817:1817:5318:2319:0619:5920:5621:56
Rhiwbina, before Heol Nant Castan 06:4707:2107:5308:3809:1109:4110:1110:4111:1111:4112:1112:4113:1113:4114:1114:4315:1415:4416:1916:4917:1917:5418:2419:0620:0020:5621:56
Rhiwbina Heol Llanishen Fach (o/s 65) 06:4807:2207:5408:3909:1209:4210:1210:4211:1211:4212:1212:4213:1213:4214:1214:4415:1515:4516:2016:5017:2017:5518:2519:0720:0120:5721:57
Rhiwbina, before Heol Uchaf Spar 06:4807:2207:5408:3909:1209:4210:1210:4211:1211:4212:1212:4213:1213:4214:1214:4415:1515:4516:2016:5017:2017:5518:2519:0720:0120:5721:57
Rhiwbina, after Heol Lewis 06:4907:2307:5608:4109:1309:4310:1310:4311:1311:4312:1312:4313:1313:4314:1314:4515:1715:4716:2216:5217:2217:5718:2719:0820:0220:5721:57
Rhiwbina, before Gron Ffordd 06:5007:2307:5708:4209:1409:4410:1410:4411:1411:4412:1412:4413:1413:4414:1414:4615:1815:4816:2316:5317:2317:5818:2819:0920:0220:5821:58
Rhiwbina, before Wenallt Road 06:5107:2407:5808:4309:1509:4510:1510:4511:1511:4512:1512:4513:1513:4514:1514:4715:1915:4916:2416:5417:2417:5918:2919:1020:0320:5821:58
Rhiwbina, after Lon Ysgubor 06:5207:2507:5908:4409:1609:4610:1610:4611:1611:4612:1612:4613:1613:4614:1614:4815:2015:5016:2516:5517:2518:0018:3019:1120:0420:5921:59
Rhiwbina, before The Deri 06:5307:2608:0008:4509:1709:4710:1710:4711:1711:4712:1712:4713:1713:4714:1714:4915:2115:5116:2616:5617:2618:0118:3119:1220:0521:0022:00
Rhiwbina Hill (opp 52) 06:5407:2808:0308:4709:1909:4910:1910:4911:1911:4912:1912:4913:1913:4914:1914:5115:2315:5316:2816:5817:2818:0318:3319:1320:0621:0122:01
Pantmawr, before Caer Wenallt North 06:5607:3008:0508:4909:2009:5010:2010:5011:2011:5012:2012:5013:2013:5014:2014:5215:2415:5416:2916:5917:2918:0418:3419:1520:0821:0322:03
Pantmawr, after Caer Wenallt South 06:5707:3208:0708:5109:2209:5210:2210:5211:2211:5212:2212:5213:2213:5214:2214:5415:2615:5616:3117:0117:3118:0618:3619:1620:0921:0422:04
Coryton, before Heol Pant Y Rhyn 06:5807:3308:0908:5309:2309:5310:2310:5311:2311:5312:2312:5313:2313:5314:2314:5515:2715:5716:3217:0217:3218:0718:3719:1720:1021:0522:05
Coryton, before Hollybush Inn 06:5907:3408:1108:5409:2409:5410:2410:5411:2411:5412:2412:5413:2413:5414:2414:5615:2815:5816:3317:0317:3318:0818:3819:1820:1121:0622:06
Whitchurch Hospital (after) 07:0007:3708:1408:5609:2609:5610:2610:5611:2611:5612:2612:5613:2613:5614:2614:5815:3016:0016:3517:0517:3518:1018:4019:1920:1221:0722:07
Whitchurch Library (opp) 07:0207:3908:1608:5809:2709:5710:2710:5711:2711:5712:2712:5713:2713:5714:2715:0015:3116:0116:3617:0617:3618:1118:4119:2120:1421:0922:09
Whitchurch, after Plas y Llan 07:0307:4008:1809:0009:2909:5910:2910:5911:2911:5912:2912:5913:2913:5914:2915:0115:3316:0316:3817:0817:3818:1318:4319:2220:1521:1022:10
Whitchurch Merthyr Road Shops (o/s Opticians) 07:0407:4108:2009:0109:3010:0010:3011:0011:3012:0012:3013:0013:3014:0014:3015:0315:3416:0416:3917:0917:3918:1418:4419:2320:1621:1122:11
Whitchurch, opp Three Elms 07:0607:4408:2309:0409:3210:0210:3211:0211:3212:0212:3213:0213:3214:0214:3215:0515:3616:0616:4117:1117:4118:1618:4619:2520:1821:1322:13
Whitchurch, after Ararat Church 07:0607:4408:2409:0409:3210:0210:3211:0211:3212:0212:3213:0213:3214:0214:3215:0515:3616:0616:4117:1117:4118:1618:4619:2520:1821:1322:13
Whitchurch The Philog (o/s 71) 07:0807:4608:2609:0609:3410:0410:3411:0411:3412:0412:3413:0413:3414:0414:3415:0615:3816:0816:4317:1317:4318:1818:4819:2720:2021:1422:14
Birchgrove, before Cross Inn 07:0907:4708:2809:0709:3510:0510:3511:0511:3512:0512:3513:0513:3514:0514:3515:0715:3916:0916:4417:1417:4418:1918:4919:2820:2121:1522:15
Gabalfa St Josephs Convent (o/s former) 07:1207:5108:3209:1009:3810:0810:3811:0811:3812:0812:3813:0813:3814:0814:3815:1015:4316:1316:4817:1817:4818:2318:5319:3120:2421:1822:18
Maindy, o/s Cathays High School 07:1407:5308:3509:1209:4010:1010:4011:1011:4012:1012:4013:1013:4014:1014:4015:1215:4516:1516:5017:2017:5018:2518:5519:3320:2621:2022:20
Blackweir (opp) 07:1507:5408:3709:1409:4210:1210:4211:1211:4212:1212:4213:1213:4214:1214:4215:1415:4716:1716:5217:2217:5218:2718:5719:3520:2721:2122:21
Blackweir, after Rosemount 07:1707:5608:3909:1609:4410:1410:4411:1411:4412:1412:4413:1413:4414:1414:4415:1615:4916:1916:5417:2417:5418:2918:5919:3720:2921:2322:23
Cathays Park, o/s College Road RK 07:1807:5708:4109:1809:4610:1610:4611:1611:4612:1612:4613:1613:4614:1614:4615:1815:5116:2116:5617:2617:5618:3119:0119:3920:3021:2422:24
Cathays Park, o/s Law Courts RJ 07:1907:5808:4309:2009:4810:1810:4811:1811:4812:1812:4813:1813:4814:1814:4815:2015:5316:2316:5817:2817:5818:3319:0319:4120:3121:2522:25
Cardiff Castle, o/s Kingsway GR 07:2007:5908:4409:2109:4910:1910:4911:1911:4912:1912:4913:1913:4914:1914:4915:2115:5416:2416:5917:2917:5918:3419:0419:4220:3221:2622:26
Cardiff, o/s Westgate Street KG 07:22s08:01s08:48s09:25s09:53s10:23s10:53s11:23s11:53s12:23s12:53s13:23s13:53s14:23s14:53s15:25s15:58s16:28s17:03s17:33s18:0318:3819:0819:4620:34s21:28s22:28
Cardiff Bus Interchange Bay 4 07:2408:0308:5009:2709:5510:2510:5511:2511:5512:2512:5513:2513:5514:2514:5515:2716:0016:3017:0517:3518:0518:4019:1019:4820:3621:3022:30

s “set down only” – the bus will only stop to drop passengers off

Timetable data from Cardiff Bus,

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