High-speed trains introduced for Hajj pilgrimage first time, details here

For the first time in history, the Hajj pilgrims this year will be able to take the service of high-speed rail, which will be made available from Mecca to Medina. Hajj is the holy pilgrimage by Muslims to Saudi Arabia's revered Mecca city.
The service is being provided by Haramain High Speed Rail (HHR) that will be linking the two holy destinations. On its way, the train will cross three stations, namely Jeddah, King Abdul Aziz International Airport and King Abdullah Economic City in Rabigh, as mentioned in the railway's official website.

The railway was introduced last year in the month of October, after the Hajj pilgrimage was done. So this will be the first year of the railways handling the yearly crush of pilgrims. As per reports, nearly 2.37 millions pilgrims made it to Mecca in the year 2018.
As of now, it takes about 10 hours drive to reach Mecca from Medina but with the introduction of high speed train service, it will just take 2 hours of travel time. These high speed trains travel will run at the speed of 300 kilometers per hour (186 miles per hour) on electrified rails. Currently, 35 trains with 13 cars and 417 seats will run on tracks. The seats will be made available in two classes, namely business and economy, and people can book accordingly.

The HHR line can manage 60 million passengers a year. Not only this, the latest technology is designed to handle soaring temperatures up to 50°C (122°F), which is also the maximum temperature recorded in Saudi Arabia.

Hajj is one pilgrimage which ever Muslim needs to perform at least once in their lifetime (if physically and financially able).