| Color: | 80FF00 |
| Mumbai Central–Alwar Duronto Express | |
| Type: | Duronto Express |
| Operator: | Western Railways |
| Start: | (MMCT) |
| Stops: | 3 |
| End: | (AWR) |
| Distance: | 1160km (720miles) |
| Journeytime: | 15 hours 20 minutes |
| Frequency: | Bi-Weekly |
| Class: | AC 1st Class, AC 2 tier, AC 3 tier, AC Chair Car |
| Seating: | Yes |
| Sleeping: | Yes |
| Catering: | Yes, pantry car attached |
| Observation: | Rake sharing with 12227/12228 Mumbai Central–Indore Duronto Express |
| Stock: | LHB coach |
| Trainnumber: | 12239 / 12240 |
| Speed: | 76km/h average including halts |
The 12239 / 12240 Mumbai Central–Alwar Duronto Express is a Duronto Express train of the Indian Railways connecting (MMCT) to (Alwar). It is currently being operated with 12239 / 12240 train numbers.
The rake has 8 AC 3 tier coaches, 2 AC 2 tier coaches, 1 AC First Class, 5 AC Chair Car, 1 Pantry car and 2 EOG cars making a total of 14 coaches.
As is customary with Indian Railways, coaches are added/removed as per the demand.
It is the fastest train on the Mumbai–Jaipur sector. It averages 75.59 km/h as 12239 Duronto Express covering 1159 km in 15 hrs 20 mins and 70.24 km/h as 12240 Duronto Express covering 1159 km in 16 hrs 30 mins.
Some of the other trains that cover the Mumbai–Jaipur sectors are 12955/56 Jaipur Superfast Express, 12979/80 Jaipur–Bandra Terminus Superfast Express, 19707/08 Amrapur Aravali Express, 22933/34 Bandra Terminus–Jaipur Weekly Superfast Express, 12215/16 Delhi Sarai Rohilla–Bandra Terminus Garib Rath Express which initially ran up to Jaipur, later extended to Delhi Sarai Rohilla.
This train had its inaugural run on 3 April 2011. It was & still is a 2 days a week service. It is a fully AC train & uses LHB rakes. Until 17 August 2021, it used to ply between and but then, it was extended upto .
It has halts at,,,
is where it reverses direction of travel. This Is Not Commercial Halt This Halt Is For Rake Reversal only
The train is hauled by a Electric locomotive