Within 50-100km around Mianyang:
Anxian Qianfo Mountain, Luofu Mountain, Baishui Lake, Xunlong Mountain (Longyin Mountain) and Longquan Gravel Cave; Jiangyou Taibai Park, Doutuan Mountain, Foye Cavern, Hanzeng Drifting, Yangmaxia and Qinglian Li Bai's former residence; Zitong Qiqu Damiao Mountain, Santai luban reservoir, Tuanjie Reservoir and Yuntai Pass.
100km away:
Qinglinkou Ancient Town in Jiangyou, Ape King Cave, Yuli and Xiaozhaizigou in Beichuan, Hongji in Pingwu, Wang Lang Nature Reserve, Huya, Santaiguo and so on.
Have a nice trip.