Asian Highway 78 (AH78) is a road in the Asian Highway Network running 1110 km (690 miles) from Ashgabat, Turkmenistan to Kerman, Iran. The route is as follows:

Turkmenistan

Iran

Asian Highway Network

Asian Highway Network
Across the whole continent	AH1 AH2 AH3 AH4 AH5 AH6 AH7 AH8 AH9 [ko; zh]
Southeast Asia	AH11 AH12 AH13 AH14 AH15 AH16 AH17 AH18 AH19 AH21 [ko] AH25 AH26 AH111 AH112 AH121 [ko; th] AH123 [ko; th] AH131 AH132 AH140 AH141 AH142 AH143 AH150 AH151 AH152
East Asia, Northeast Asia and Southeast Asia	AH30 AH31 AH32 AH33 AH34 AH35 [ko]
South Asia	AH41 AH42 AH43 AH44 AH45 AH46 AH47 AH48 AH51
North Asia, Central Asia and Southwest Asia	AH60 AH61 AH62 AH63 AH64 AH65 AH66 AH67 AH68 AH70 AH71 AH72 AH75 AH76 AH77 AH78 AH81 AH82 AH83 AH84 AH85 AH86 AH87 AH88