It depends what you want to do:
Badaling and Juyongguan: Partly wheelchair-friendly and close to Beijing, these two sections are the most popular among Chinese tourists.
Mutianyu: Fully-restored with cable car access, it’s the most popular among foreign travelers and recommended for customers who are tight on time (day tours, or layover tours), or for those who want an easy walk. The Great Wall toboggan is only available in this section.
Jinshanling: Half-repaired, it’s the most photogenic section with very picturesque scenery and recommended to customers who would like to do some moderate Great Wall hiking.
Jiankou: The steepest section is now part-repaired (the west part was repaired between 2015 and 2019; the east part is still original Great Wall ruins.) Travelers seeking a challenging experience often like it.
Simatai: Its wild wall is the only section lit up at night, so it is recommended to customers who would like to have a different experience and appreciate stunning night views of the Great Wall.
Gubeikou: also wild, but not very steep, it is the most rural and historically interesting section.
Huanghuacheng: half-repaired, located by a lake/reservoir, it is recommended for overnight camping on the Great Wall.
Huangyaguan: half-repaired, located in Ji County of Tianjin City, the annual Great Wall Marathon race site is recommended for a time-smart layover tour from Tianjin Cruise port and as part of an in-depth Great Wall hiking tour.
