1. The hilly terrain made it difficult for the hikers to reach the summit.
2. The picturesque village was nestled in the hilly countryside.
3. The hilly road was a challenge for the cyclists to navigate.
4. The hilly landscape provided stunning views of the surrounding countryside.
5. The hilly region was known for its vineyards and wineries.
6. The hilly terrain was perfect for a challenging mountain biking adventure.
7. The hilly streets of San Francisco are famous for their steep inclines.
8. The hilly countryside was dotted with quaint farmhouses and grazing cattle.
9. The hilly hike was invigorating and offered breathtaking panoramic views.
10. The hilly course was a test of endurance for the marathon runners.