The Worcester Racecourse path provides a great way into the centre without touching the main roads.
From Northwick, National Cycle Network route 46 follows residential roads to the northern end of the racecourse. The green, tree-lined path then takes you to Castle Street, where you can loop right towards Sabrina Bridge to cross the Severn. (For the university or St Johns, head west here.)
On the opposite bank now, the riverside path continues past the cricket pitch, then heads inland past the industrial area near Diglis Bridge. The cycle route is signed along roadside paths as far as Lower Wick and Powick.