Prior to this date, regional and national magazines such as Running Times provided most of the road race results. Then in 1995, Dave Monti started Race Results Weekly , increasing the coverage of race results world-wide by a significant amount. Because of these and similar discontinuities in data collection, one should not interpret analyses presented in this section as reflecting changes in distance running world-wide altho, to a large extent, they do. Certainly the numbers of performances qualifying for inclusion in the ADR database has grown since the 1970's, however the factor is not as large as might be inferred from these analyses. The count of performances and races includes grand prix standings and stage races.
Dates represent the most recent performance in the database.