From Barking train to West Ham Underground Station, Tube to Stratford (London), then train to Colchester. 1 h 6 min £25. From Barking train to Basildon Town Centre, Bus Station (Basil'n Bus Stn), line 100 bus to Chelmsford City Centre, Bus Station (Chelm Bus Stn), then bus to Colchester Town Centre, Head Street (Colch Head St). 3 h 7 min £12. From Barking drive to Colchester. 57 min £10.
c2c operates a train from Barking to Colchester every 10 minutes. Tickets cost $4 - $7 and the journey takes 4 min. 2 other operators also service this route. Alternatively, c2c operates a bus from Barking to Colchester every 20 minutes. Tickets cost $7 - $11 and the journey takes 20 min. 2 other operators also service this route.