Sofia in Bulgaria has an extensive network of forest parks close to the city centre.
This route links four of the main parks and almost exclusively keeps you away from main roads.
Run through Borisova Gradina Park, which features numerous wooded paths here, and a couple of small lakes. The route through this park is a gradual uphill. Cross the main road (south of the TV Tower), and run into a city park with grid-like rows of tree paths and the National Tennis Center. Head west into Loven Park, which is less developed and has mainly flat paths and a zoo at its southern end. You’ll then need to use Ul. Srebama for ~1.5 km to connect to the southern end of South Park. Run for 2 km north through the park which features a combination of wooded and open terrain, and some hills at its eastern end. At the northern end of South Park, cross Blvd. Bulgaria into the National Palace of Culture grounds, which features imposing, alée-like paths. To complete the loop, it follows Blvd. Hristo Georgiev east to Borisova Gradina Park.