OR-Library is a collection of test data sets for a variety of OR problems.
A full list of the test data sets available in OR-Library can be found here.
There are currently 24 data files. The first set of data files are the 10 test problems from Chapter 9 of S.Eilon, C.D.T.Watson-Gandy and N.Christofides "Distribution management: mathematical modelling and practical analysis" Griffin, London 1971. Test problems 1, 2, ..., 10 from Chapter 9 are available in files vrp1, vrp2, ..., vrp10 respectively. The format of these data files is apparent from the tables of data given in the above reference. The second set of data files are the 14 test problems from Chapter 11 of N.Christofides, A.Mingozzi, P.Toth and C.Sandi (eds) "Combinatorial optimization", John Wiley, Chichester 1979. Test problems 1, 2, ..., 14 from Chapter 11 are available in files vrpnc1, vrpnc2, ..., vrpnc14 respectively. The format of these data files is: number of customers, vehicle capacity, maximum route time, drop time depot x-coordinate, depot y-coordinate for each customer in turn: x-coordinate, y-coordinate, quantity Both sets of files are of size 15Kb (approximately).
Click here to access these files
Test data for vehicle routing problems is also available here, here, here, here, here and here.