Losail Circuit
Wednesday Night Bike Track
Google Maps Location

Meeting Point : Pitlane, next to track, after ID check
Allow 10 minutes to register on your first visit... bring Photo ID and fill form to get access

Losail Photo

The Losail Ciruit is a Moto GP track located about 20 minute drive North of Doha. They frequently open for 'training days' on a Wednesday night from end of September until May each year where cyclists and runners have access to the 5.5km circuit. It is typically open from 5pm to 8.30pm. There is ample parking, toilets, showers and refreshment area.
Circuit
The specific days are listed on their website.

https://www.circuitlosail.com/events/training-days/

There are also female only training days.
https://www.circuitlosail.com/events/ladies-training-days-2018/

Losail Circuit Map