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Regional Transportation Authority of Pima County
421x Route

Bus 421x

A bus service operated by Regional Transportation Authority of Pima County

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List of stops

Number of stops: 15

Map

Monday to Friday

SS/La Canada Dr/Trader Ln (Ne) – SS/Downtown Ronstadt Center (M)

Timing points All stops

SS/La Canada Dr/Trader Ln (Ne)	05:00	06:30	08:00	09:30	11:00	12:30	14:00	15:30	17:00	18:30
SS/Duval Mine Rd/La Canada Dr (Se)	05:07	06:37	08:07	09:37	11:07	12:37	14:07	15:37	17:07	18:37
SS/Nogales Hy/Abrego Dr (Nw)	05:10	06:40	08:10	09:40	11:10	12:40	14:10	15:40	17:10	18:40
SS/Nogales Hy/C Arroyo Sur (Nw)	05:11	06:41	08:11	09:41	11:11	12:41	14:11	15:41	17:11	18:41
SS/Sahuarita Rd/Desert Gem (Sw)	05:21	06:51	08:21	09:51	11:21	12:51	14:21	15:50	17:20	18:50
SS/Rancho Sahuarita Bl/Sahuarita Rd (Nw)	05:26	06:56	08:26	09:56	11:26	12:56	14:26	15:55	17:25	18:55
SS/Pima Mine Rd/I-19 (Ne)	05:35	07:05	08:35	10:05	11:35	13:05	14:35	16:04	17:34	19:04
SS/Laos Transit Center (O)	05:52	07:22	08:52	10:22	11:52	13:22	14:52	16:20	17:50	19:20
6th Av/Veterans (Ne)	05:57	07:27	08:57	10:27	11:57	13:27	14:57	16:27	17:57	19:27
6th Av/26th St (Ne)	06:02	07:32	09:02	10:32	12:02	13:32	15:02	16:32	18:02	19:32
SS/Downtown Ronstadt Center (M)	06:08	07:38	09:08	10:38	12:08	13:38	15:08	16:38	18:08	19:38

SS/Downtown Ronstadt Center (M) – SS/La Canada Dr/Trader Ln (Ne)

Timing points All stops

SS/Downtown Ronstadt Center (M)	06:30	08:00	09:30	11:00	12:30	14:00	15:30	17:00	18:30
6th Av/27th St (Sw)	06:35	08:05	09:35	11:05	12:35	14:05	15:35	17:05	18:35
6th Av/Veterans (Sw)	06:40	08:10	09:40	11:10	12:40	14:10	15:40	17:10	18:40
SS/Laos Transit Center (O)	06:45	08:15	09:45	11:15	12:45	14:15	15:47	17:17	18:47
SS/Pima Mine Rd/I-19 (Ne)	07:05	08:35	10:05	11:35	13:05	14:35	16:10	17:40	19:10
SS/Sahuarita Rd/Desert Gem (Sw)	07:17	08:47	10:17	11:47	13:17	14:47	16:19	17:49	19:19
SS/Rancho Sahuarita Bl/Sahuarita Rd (Nw)	07:21	08:51	10:21	11:51	13:21	14:51	16:23	17:53	19:23
SS/Nogales Hy/Abrego Dr (Nw)	07:35	09:05	10:35	12:05	13:35	15:05	16:35	18:05	19:35
SS/Nogales Hy/C Arroyo Sur (Nw)	07:36	09:06	10:36	12:06	13:36	15:06	16:38	18:08	19:38
SS/La Canada/Duval Mine Rd (Sw)	07:40	09:10	10:40	12:10	13:40	15:10	16:40	18:10	19:40
SS/La Canada Dr/Trader Ln (Ne)	07:47	09:17	10:47	12:17	13:47	15:17	16:47	18:17	19:47

Last updated on March 22, 2026

Route Path (Streets & Roads)

Outbound: SS/La Canada Dr/Trader Ln (Ne) – SS/Downtown Ronstadt Center (M)

South La Cañada Drive - West Duval Mine Road - South Nogales Highway - West Calle Arroyo Sur - West Sahuarita Center Way - South Rancho Sahuarita Boulevard - West Pima Mine Road - West Placita Casas Bonitas - South 6th Avenue - North Arizona Avenue

Inbound: SS/Downtown Ronstadt Center (M) – SS/La Canada Dr/Trader Ln (Ne)

North Arizona Avenue - South 6th Avenue - West Placita Casas Bonitas - West Pima Mine Road - West Sahuarita Center Way - South Rancho Sahuarita Boulevard - South Nogales Highway - West Calle Arroyo Sur - North La Cañada Drive - South La Cañada Drive

All data is available in GTFS feed: regional-pima-county

Bus 421x FAQ

What time does the 421x bus start operating?

Services on the 421x - Green Valley/Sahuarita Express Northbound bus start at 05:00 on Monday, Tuesday, Wednesday, Thursday, Friday.
What time does the 421x bus stop working?

Services on the 421x - Green Valley/Sahuarita Express Northbound bus stop at 19:38 on Monday, Tuesday, Wednesday, Thursday, Friday.
Is there a 421x bus stop near me?

Click here to view the nearest 421x - Green Valley/Sahuarita Express Northbound bus stop.

421x bus Route Map

PDF Version: 421x timetable, stops and map

421x (Sahuarita Buses)

The first stop of the 421x bus route is SS/La Canada Dr/Trader Ln (Ne) and the last stop is SS/Downtown Ronstadt Center (M). 421x (Green Valley/Sahuarita Express Northbound) is operational during on weekdays.

Additional information: 421x has 11 stops and the total trip duration for this route is approximately 68 minutes.

See why over 2 million users trust and consider busmaps.com as the best public transport website. busmaps gives you Sahuarita Buses suggested routes, real-time bus tracker, line route maps in Sahuarita, and helps to find the closest 421x bus stops near you. No internet available? Download an offline PDF map and bus schedule for the 421x bus to take on your trip.

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