Overview
Mount Siguniang National Park lies 220 km west of Chengdu, in the Qionglai Mountains of western Sichuan in China. It is the plateau area, the public transportation is not such convenient, there is no airport and train station. The closest airport is Chengdu Shuangliu International Airport, there are lots of domestic & international flights arrive there. Chengdu as the main transit center to travel to Mt.Siguniang Scenic Area, belows are the detailed information about how to travel to visit Mt.Siguniang from Chengdu:

There are three travel routes to Mount Siguniang  from Chengdu downtown, varying in distance and scenery. The most direct route is to come from Chengdu through Dujiangyan and Wolong, and over Mount Balang pass, which, at over 4500 m above sea level, affords some spectacular views; A better road exists between the city of Ya’an and Rilong, via the towns of Baoxing, Yaoji and Dawei. This road is in much better condition than the road through Dujiangyan and Wolong.The least direct way to get to Rilong is to catch a bus to the city of Xiaojin from Chengdu. If you are planning a Chengdu trip to visit the Mt. Siguniang, there are two main methods for travelling from Chengdu, car rental and long distance bus.

1. Car Rental
Book a car rental service with a driver is the best way to visit Mt. Siguniang from Chengdu, you can enjoy a hassle free service which pick you up from your Chengdu hotel, train station or airport by your personal driver. It's time-saving way, because it takes 4-5 hours to arrive without detours. It will be cost higher than the long-distance bus, but still affordable for most travelers. Use the private transfer from Chengdu to Mt.Siguniang is the most popular way for the tourists now, you can get rid of the complicated public transportation.

2. Long-distance Bus
There is no direct bus from Chengdu to Mt.Siguniang scenic area, but Chengdu is the transfer center getting to Mount Siguniang. You can only take the bus to Xiaojin County at Chengdu Chadianzi Bus Station, the bus departs at 8:00 am & 14:00pm daily, the ticket fare costs CNY95 per person.

More Information
Xiaojin County Passenger Transport Center
Address: Xiaojin County, Aba Tibetan and Qiang Autonomous Prefecture

Chadianzi Passenger Bus Station
Address: Junction of Jinrui Road and 5th Section of Xisanhuan Road, Jinniu District, Chengdu City

3. Chengdu Tourist Express
The Toursit Express is available from Chengdu to Mt.Siguniang, you can take it from the IFS/Chunxi road of Chengdu, it takes about 5 hours at the cost of CNY136 for one-way trip and CNY272 for a round trip. You can book the ticket on WeChat Official Accounts of Express.

How to get around Mt. Siguniang
There is no central ticketing office for the national park, so visiting different parts requires venturing around Rilong and surrounds to procure tickets. There is no official taxi service in Rilong, but vans frequently trawl the streets looking for customers, and can easily be flagged down. Rilong is a small town, with most facilities within ten minutes' walk. There are 3 main ways to get around Mt.Siguniang scenic, sightseeing bus, horse-riding and hiking. The sightseeing buses are available at Shuangqiaogou valley and Changpinggou valley. If you are an energetic person and a nature lover, hiking will cater your needs.