About 679.3 kilometers.

According to the Baidu map query, Tianjin is about 679.3 kilometers away from Henan, and the self-driving time is about 7 hours and 30 minutes. It passes through: Xingheng Expressway and Beijing-Hong Kong-Macao Expressway.

Tianjin delicacies include Goubuli steamed buns, pancakes, Tianjin hemp flowers, gaba vegetables, ear-eye fried cakes, fried rolls, tea soup, noodle tea, sugar-fried chestnuts, dried cakes, etc.