Home › Routes › Chennai to Pondicherry
Route · Tamil Nadu and Puducherry · From Chennai
Chennai to Pondicherry: Distance, ECR or GST Road, Bus, Car and Train
Two roads go from Chennai to Pondicherry: the East Coast Road along the sea, and the GST road inland through Chengalpattu and Tindivanam. Here is how far each is, which one suits where you start in Chennai, which bus terminus to go to, the train, and what the drive costs in fuel.
Photo: https://www.flickr.com/photos/ashwinkumar/, CC BY-SA 2.0, via Wikimedia Commons. Text added by Trip Under.
Short answer
Pondicherry is about 150 km from Chennai by the East Coast Road (ECR) and about 169 km by the GST road (NH32), measured from the city centre. Both take about 2 hours 30 minutes on a clear road by OSRM's free-flow estimate; Chennai traffic adds to that. The cheapest way is a government bus, from Koyambedu on the ECR or from Kilambakkam on the GST road, but we found no official or dated news fare, so check the live fare. The fastest way is your own car or a cab; fuel is about ₹1,080 one way on the ECR at Chennai's petrol price and an assumed 15 km a litre. A daily train (16115) and a morning MEMU also run from Chennai Egmore.
Pondicherry is the easiest weekend out of Chennai, and the only real decision is the road. The ECR hugs the coast past Mahabalipuram; the GST road is the national highway inland. Which one is quicker depends mostly on where in Chennai you start.
How we worked it out. On 11 November 2026 we took coordinates for Chennai, Pondicherry, the airport and the Kilambakkam bus terminus from Wikidata and routed them with OpenStreetMap routing (OSRM), once along each road. The times are free-flow estimates: they assume an empty road. Fuel is distance times a dated petrol price, divided by a mileage we assumed. Where we could not find an official or dated fare, we give none.
How far is Pondicherry from Chennai?
| From | Road | Road distance | Drive (free-flow estimate) |
|---|---|---|---|
| Chennai city centre | ECR, via Mahabalipuram and Marakkanam | about 150 km | about 2 h 30 min |
| Chennai city centre | GST road (NH32), via Chengalpattu and Tindivanam | about 169 km | about 2 h 30 min |
| Kilambakkam bus terminus (KCBT) | GST road | about 131 km | about 2 h |
| Chennai airport (MAA) | GST road | about 148 km | about 2 h 20 min |
Open the route in Google Maps directions for live traffic on the day.
ECR or GST road: which to take
| East Coast Road (ECR) | GST road (NH32) | |
|---|---|---|
| Distance from the city centre | about 150 km | about 169 km |
| Free-flow drive | about 2 h 30 min | about 2 h 30 min |
| Towns on the way | Mahabalipuram, Kalpakkam, Marakkanam | Kilambakkam, Chengalpattu, Tindivanam |
| Better if you start in | Central, south-east and coastal Chennai (Adyar, Thiruvanmiyur, OMR) | The airport, Tambaram, Kilambakkam and the western suburbs |
| Bus terminus | Koyambedu (CMBT) | Kilambakkam (KCBT) |
| Toll plazas | None found in a dated source | Paranur and Athur are on this stretch (IANS, April 2026) |
- The ECR is shorter and the prettier drive, along the coast past Mahabalipuram, and it is the natural road from central and south-east Chennai.
- The GST road is longer but starts closer to the south and west of the city. From Kilambakkam it is about 131 km, roughly 2 hours by OSRM's estimate, so from the airport or Tambaram it usually makes more sense.
- On paper the two take the same time. In practice the deciding factor is the traffic between your door and the edge of the city.
Every way to get there
| Way | Time | Cost | Good to know |
|---|---|---|---|
| Government bus via the ECR (TNSTC, SETC, PRTC) | about 3–4 h | Check the live fare | From Koyambedu (CMBT): DT Next (16 Oct 2026) lists Puducherry among the ECR destinations served from there. We found no official or dated news fare. |
| Government bus via the GST road | about 3–4 h | Check the live fare | From Kilambakkam (KCBT), which handles the Tindivanam route (DT Next, 16 Oct 2026). A 5 Nov 2026 Deepavali list (tn8.in) also put Puducherry at Kilambakkam. |
| Train: Chennai Egmore → Puducherry | 16115: arrives 22:15. MEMU 66051: arrives 10:40 | Check the live fare | Both daily. Back: 16116 leaves Puducherry 05:35, MEMU 66052 at 15:35 (etrain, read 12 Nov 2026; confirm on NTES). Puducherry station is in town, so there is no extra leg. |
| Own car | about 2 h 30 min free-flow | about ₹1,078 fuel (ECR) or ₹1,211 (GST), one way | Distance ÷ 15 km a litre (our assumption) × ₹107.76 a litre, Chennai petrol on 11 Nov 2026. Tolls not included. |
| Cab or taxi | about 2 h 30 min free-flow | Check the live fare | We found no dated published fare. Get a quote that says which road and whether tolls are included. |
Where do Pondicherry buses leave from? In October 2026 DT Next placed ECR buses, including Puducherry, at Koyambedu (CMBT) and the Tindivanam route at Kilambakkam (KCBT). Festival lists can move services between the two, so check the boarding point on your ticket. Our Pondicherry trip cost guide has the whole weekend budget.
The road and where to stop
Infographic · the route
Chennai to Pondicherry by the ECR
About 150 km. The GST alternative goes Kilambakkam, Chengalpattu, Tindivanam.
OSRM's ECR route leaves Chennai on Rajiv Gandhi Salai (OMR) and joins the East Coast Road for the run south, passing Mahabalipuram, Kalpakkam and Marakkanam before turning into Pondicherry. The GST route takes NH32 past Kilambakkam, Chengalpattu and Tindivanam, then the Tindivanam–Pondicherry road.
Photo: Dey.sandip, CC BY 3.0, via Wikimedia Commons
- Mahabalipuram (ECR): the shore temple and rock-cut rathas are right on the ECR, and every monument is within a kilometre of the bus stand (our Mahabalipuram page). It is the obvious break on the ECR; our pick instead of a Chennai city break.
- Gingee Fort (GST, a detour): from Tindivanam buses run about 30 km inland to Gingee (our Gingee page). Worth it if you take the GST road and have a spare half-day; Gingee is our pick instead of another crowded fort.
- Auroville (at the end): the free Matrimandir viewing point is just north of Pondicherry, fifteen minutes from town (our Pondicherry page). Collect the pass yourself at the Visitors Centre.
When to go and what Pondicherry costs a day
Infographic · month by month
Pondicherry month by month
Month-by-month as text
Jan: Best · Feb: Best · Mar: Good · Apr: Passable · May: Avoid · Jun: Avoid · Jul: Avoid · Aug: Passable · Sep: Passable · Oct: Good · Nov: Best · Dec: Best
Trip Under's season scores. Best: Jan–Feb, Nov–Dec. November to February is the season. April to June is punishing heat and humidity; October to December can bring cyclone weather off the Bay of Bengal.
| Style | Per person, per day on the ground |
|---|---|
| Shoestring | ₹1,100 |
| Mid-range | ₹2,000 |
| Comfortable | ₹4,500 |
So a two-day mid-range weekend by your own car on the ECR comes to roughly ₹6,200 for one person (two days on the ground plus fuel both ways, before tolls), and less each if you share the car.
Frequently asked questions
What is the distance from Chennai to Pondicherry?
About 150 km by the East Coast Road and about 169 km by the GST road (NH32), from Chennai city centre (OSRM, 11 November 2026). From Kilambakkam it is about 131 km and from Chennai airport about 148 km, both by the GST road.
How long does it take from Chennai to Pondicherry by road?
About 2 hours 30 minutes of driving by either road on a clear run, by OSRM's free-flow estimate. Government buses take about 3 to 4 hours. City traffic at the Chennai end adds the most time.
Which is better from Chennai to Pondicherry, ECR or GST road?
The ECR is shorter (about 150 km) and runs along the coast past Mahabalipuram, so it suits central and south-east Chennai. The GST road is longer (about 169 km) but starts nearer the airport, Tambaram and Kilambakkam. Free-flow times are about the same.
What is the cheapest way from Chennai to Pondicherry?
A government bus, from Koyambedu on the ECR or Kilambakkam on the GST road. We found no official or dated news fare, so check the live fare on the TNSTC or PRTC site or at the stand.
Is there a train from Chennai to Pondicherry?
Yes. The daily 16115 express from Chennai Egmore reaches Puducherry at 22:15, and the daily MEMU 66051 at 10:40. Back, the 16116 leaves at 05:35 and the MEMU 66052 at 15:35 (etrain, 12 November 2026). Check NTES before you travel.
How much is fuel from Chennai to Pondicherry?
About ₹1,078 one way by the ECR and ₹1,211 by the GST road, at ₹107.76 a litre (Chennai, 11 November 2026) and an assumed 15 km a litre. Tolls are not included.
When is the best time to go to Pondicherry?
Jan–Feb, Nov–Dec on Trip Under's season scores. October to December can bring cyclone weather off the Bay of Bengal, and April to June is very hot and humid.
Sources and how we priced this
- Coordinates: Wikidata, Chennai (Q1352), Pondicherry (Q639421), Chennai International Airport (Q502670), Kilambakkam bus terminus (Q62274554), Mahabalipuram (Q208000), Chengalpattu (Q888769), Tindivanam (Q2465629), Marakkanam (Q2554778), read 11 November 2026.
- Road distances, free-flow times and the towns on each road: OSRM driving routes (router.project-osrm.org), 11 November 2026.
- Bus terminals: DT Next, "Aayudha Pooja holidays travel guide: special buses from Chennai, boarding points and routes" (16 October 2026); tn8.in, Deepavali 2026 special buses from Chennai (5 November 2026). No official or dated news fare for a Chennai–Puducherry government bus was found, so none is given.
- Trains: etrain.info, Puducherry (PDY) station list, read 12 November 2026. Live times: NTES.
- Petrol: Goodreturns, petrol price in Chennai, ₹107.76 a litre on 11 November 2026. Mileage of 15 km a litre is Trip Under's assumption. Toll plazas: IANS report on the April 2026 Tamil Nadu toll revision (via NewKerala). NHAI's toll information site (tis.nhai.gov.in) did not respond on 11 November 2026.
- Stops, season scores and daily rates: Trip Under's Pondicherry, Mahabalipuram and Gingee pages. Trip budget: Pondicherry trip cost from Chennai.
Keep reading
Price your Pondicherry trip
Pick your days and group on the Pondicherry page and see beds, food and local travel add up.
Open the Pondicherry page →Distances and drive times are OpenStreetMap routing estimates for a clear road, not promises; city traffic at either end adds time. Fuel is our own sum with an assumed mileage. Daily costs come from Trip Under's place data and cost model (see methodology). Check live bus and train fares before you travel. Trip Under is reader-planned, not an agency, and takes no commission on any booking.