Narayangadh is a city in [Chitwan] district lying adjacent to district-headquater Bharatpur in the middle part of Nepal, 100 km due west of Kathmandu, at the Narayani River where it leaves the Mahabharat Range. It has about 90,000 inhabitants and it is situated at a latitude of 27.70 deg. and longitude: 84.42 deg. Its area is 554.0 km². The Narayani takes up the Kali Gandaki, Seti, Budhi Gandaki Trisuli Rivers, thus draining the area (Narayani Basin) between Dhaulagiri (west of Pokhara) and Helambu (north of Kathmandu). Narayangarh is an important trading centre for the central Terai area, has a small airfielt with connections to Kathmandu, and is the gateway to the nearby Royal Chitwan National Park. It is also gateway to Kathmandu's major road link to the rest of the country (the highway to Lhasa is blocked by landslides, the Naubise - Hetauda highway is in poor condition and time consuming and a new road from Dhulikhel to Kamalamai (Sindhulimadi) is under construction). source: Wikipedia