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 4 data files. These 4 data files make up the 11 test problems in N.Christofides and J.E.Beasley "The period routing problem" Networks 14 (1984) 237-256. Files vrp8, vrp9 and vrp10 contain the data for the 10 test problems in Table 1 of the above paper based on 50, 75 and 100 customers respectively. These problems were originally defined in S.Eilon, C.D.T.Watson-Gandy and N.Christofides "Distribution management: mathematical modelling and practical analysis" Griffin London (1971). File period1 contains the data for the problem of R.A.Russell and W.Igo "An assignment routing problem" Networks 9 (1979) 1-17 as modified in the Christofides and Beasley paper. The format of these data files is apparent from the tables of data given in Eilon et al and Russell and Igo. The entire set of files is of size 8Kb (approximately).
Click here to access these files
Test problems are available here