| DASH | 521 | 31 | Braddock Road Station | 2101 | 2025-10-25 20:59:30 |
| DASH | 521 | 31 | SHORT TRIP ? King St-Old Town Station | 2101 | 2025-10-25 17:59:00 |
| DASH | 521 | 31 | SHORT TRIP ? King St-Old Town Station | 2101 | 2025-10-25 14:59:14 |
| DASH | 521 | 30 | Van Dorn Street Station | 2101 | 2025-10-25 11:59:14 |
| DASH | 521 | 30 | Braddock Road Station | 2101 | 2025-10-25 08:59:05 |
| DASH | 521 | 34 | Lee Center | 802 | 2025-10-24 20:27:04 |
| DASH | 521 | 36A | Mark Center Station via M. Custis Dr/N Earley St | 802 | 2025-10-24 17:57:50 |
| DASH | 521 | 34 | Lee Center | 802 | 2025-10-24 14:59:14 |
| DASH | 521 | 33 | Potomac Yard Center | 802 | 2025-10-24 11:59:14 |
| DASH | 521 | 31 | Braddock Road Station | 802 | 2025-10-24 08:59:29 |
| DASH | 521 | 30 | Braddock Road Station | 802 | 2025-10-24 05:59:08 |
| DASH | 521 | 31 | Braddock Road Station | 2702 | 2025-10-23 20:59:35 |
| DASH | 521 | 30 | SHORT TRIP ? Landmark Transit Center | 2702 | 2025-10-23 17:59:24 |
| DASH | 521 | 31 | Braddock Road Station | 3802 | 2025-10-23 14:59:19 |
| DASH | 521 | 31 | Braddock Road Station | 3802 | 2025-10-23 11:59:19 |
| DASH | 521 | 31 | NVCC Alexandria | 3802 | 2025-10-23 08:59:24 |
| DASH | 521 | 31 | NVCC Alexandria | 4402 | 2025-10-22 19:59:59 |
| DASH | 521 | 30 | SHORT TRIP ? Landmark Transit Center | 4402 | 2025-10-22 17:59:24 |
| DASH | 521 | 34 | Lee Center | 4402 | 2025-10-22 14:58:42 |
| DASH | 521 | 36A | Mark Center Station via M. Custis Dr/N Earley St | 4402 | 2025-10-22 11:59:35 |
| DASH | 521 | 32 | Landmark Transit Center | 4402 | 2025-10-22 08:58:45 |
| DASH | 521 | 35 | Van Dorn Street Station | 3802 | 2025-10-22 01:58:17 |
| DASH | 521 | 31 | NVCC Alexandria | 4402 | 2025-10-21 19:59:16 |
| DASH | 521 | 30 | Braddock Road Station | 4402 | 2025-10-21 17:59:00 |
| DASH | 521 | 36A | SCHOOL SPECIAL ? Landmark Transit Center | 4402 | 2025-10-21 14:59:04 |
| DASH | 521 | 33 | Potomac Yard Center | 4402 | 2025-10-21 11:59:14 |
| DASH | 521 | 32 | Landmark Transit Center | 4402 | 2025-10-21 08:59:34 |
| DASH | 521 | 31 | Braddock Road Station | 5902 | 2025-10-21 01:03:50 |
| DASH | 521 | 36B | Potomac Yard Center via Park Place/Valley Dr | 5902 | 2025-10-20 20:59:05 |
| DASH | 521 | 102 | Mark Center Station | 5902 | 2025-10-20 17:59:05 |
| DASH | 521 | 102 | Mark Center Station | 5902 | 2025-10-20 14:59:13 |
| DASH | 521 | 36A | Mark Center Station via M. Custis Dr/N Earley St | 5902 | 2025-10-20 11:59:36 |
| DASH | 521 | 30 | Braddock Road Station | 5902 | 2025-10-20 08:59:00 |
| DASH | 521 | 36B | Potomac Yard Center via Park Place/Valley Dr | 6002 | 2025-10-17 19:54:48 |
| DASH | 521 | 33 | Potomac Yard Center | 6002 | 2025-10-17 17:58:53 |
| DASH | 521 | 35 | Van Dorn Street Station | 6002 | 2025-10-17 14:58:48 |
| DASH | 521 | 31 | SHORT TRIP ? King St-Old Town Station | 1102 | 2025-10-17 11:58:43 |
| DASH | 521 | 36B | Potomac Yard Center via Park Place/Valley Dr | 1102 | 2025-10-17 08:58:48 |
| DASH | 521 | 33 | King St-Old Town Station | 1102 | 2025-10-17 05:58:53 |
| DASH | 521 | 36B | Potomac Yard Center via Park Place/Valley Dr | 1302 | 2025-10-16 20:58:58 |
| DASH | 521 | 30 | Braddock Road Station | 1302 | 2025-10-16 17:59:00 |
| DASH | 521 | 31 | Braddock Road Station | 1302 | 2025-10-16 14:59:00 |
| DASH | 521 | 36A | Potomac Yard Center via N Earley St/M. Custis Dr | 4702 | 2025-10-16 11:59:00 |
| DASH | 521 | 36A | Mark Center Station via M. Custis Dr/N Earley St | 4702 | 2025-10-16 08:59:00 |
| DASH | 521 | 33 | King St-Old Town Station | 7502 | 2025-10-15 20:22:00 |
| DASH | 521 | 30 | SHORT TRIP ? Landmark Transit Center | 7502 | 2025-10-15 17:59:16 |
| DASH | 521 | 36A | Potomac Yard Center via N Earley St/M. Custis Dr | 1402 | 2025-10-15 14:59:26 |
| DASH | 521 | 34 | Lee Center | 1402 | 2025-10-15 11:59:26 |
| DASH | 521 | 36A | Potomac Yard Center via N Earley St/M. Custis Dr | 1402 | 2025-10-15 08:59:25 |
| DASH | 521 | 36A | Mark Center Station via M. Custis Dr/N Earley St | 1402 | 2025-10-15 05:58:44 |
| DASH | 521 | 36A | Mark Center Station via M. Custis Dr/N Earley St | 6302 | 2025-10-14 20:59:05 |
| DASH | 521 | 33 | King St-Old Town Station | 6302 | 2025-10-14 17:59:00 |
| DASH | 521 | 32 | King St-Old Town Station | 6302 | 2025-10-14 14:59:25 |
| DASH | 521 | 31 | SHORT TRIP ? King St-Old Town Station | 1102 | 2025-10-14 11:59:14 |
| DASH | 521 | 36B | Potomac Yard Center via Park Place/Valley Dr | 1102 | 2025-10-14 08:59:19 |
| DASH | 521 | 33 | King St-Old Town Station | 1102 | 2025-10-14 05:59:21 |
| DASH | 521 | 31 | NVCC Alexandria | 3201 | 2025-10-14 00:58:33 |
| DASH | 521 | 32 | King St-Old Town Station | 3201 | 2025-10-13 20:59:12 |
| DASH | 521 | 30 | Braddock Road Station | 3201 | 2025-10-13 17:59:02 |
| DASH | 521 | 31 | NVCC Alexandria | 3101 | 2025-10-13 14:59:00 |