PFC Botev Plovdiv is known as "Bultras". Botev's eternal rival is the neighbouring city club of Lokomotiv Plovdiv, and both form the local Plovdiv derby. The two teams are the most supported ones in the second largest city in Bulgaria – Plovdiv – and the matches between them are well known to the Bulgarian football community, and also considered to be one of the fiercest rivalries in the world. Botev is the country's oldest continuously existing team, whereas Lokomotiv grew popular fanbase in the 70s. Traditionally, Lokomotiv's team drew support from the lower working class of society, whereas Botev's fanbase consisted mainly of
PFC Lokomotiv Plovdiv club of the railway workers in Plovdiv". The first years of the team are difficult as its performance does not bring about such glory as some of the other teams of the city like Sportclub or Botev Plovdiv. The club is accepted as a member of the national sport federation a whole three years after its creation. Nevertheless, in the early 1940s the team betters their performance and in 1944 wins the Championship of Plovdiv. In an economical aspect the railway club contributes heavily to the development of sports in the region of Plovdiv, making large inputs for the improvement