539 km · 3 toll plazas · about 9 h 5 min on the road. Change the vehicle, fuel or mileage below and every number updates.
The road distance from Patna to Gangtok is 539 km via NH322 — a long day that needs an early start.
You cross 3 toll plazas across Bihar, West Bengal, Sikkim. For a car the published fees add up to ₹320 one way, about ₹0.59 per km, cheaper than most highway corridors.
Gangtok is a hill destination: the last stretch climbs ghat roads, where mileage drops by roughly 15–25% and speeds fall sharply. Our fuel figures use flat-road mileage, so add a buffer.
States on the way: BiharWest BengalSikkim
Fees for a single journey with FASTag. Return fees apply when you come back through the same plaza within 24 hours; a monthly pass covers 50 single journeys in a month.
| # | Toll plaza | At km | State | Car single | Car return | Car monthly | LCV | Bus/Truck | Multi-axle |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Raje (Old Naraur) | 156 | Bihar | ₹145 | ₹215 | ₹4,815 | ₹235 | ₹490 | ₹765 |
| 2 | Asanpur | 215 | Bihar | ₹110 | ₹170 | ₹3,725 | ₹180 | ₹380 | ₹595 |
| 3 | Satbhaiya | 408 | West Bengal | ₹65 | ₹100 | ₹2,195 | ₹105 | ₹225 | ₹350 |
| Total (published fees) | 539 | ₹320 | ₹485 | ₹520 | ₹1,095 | ₹1,710 |
Totals for all 3 plazas. “No FASTag” is the 1.25x UPI rate.
| Vehicle class | One way (FASTag) | Return in 24 h | No FASTag (UPI) |
|---|---|---|---|
| Car / Jeep / Van | ₹320 | ₹485 | ₹400 |
| LCV / Mini bus | ₹520 | ₹780 | ₹650 |
| Bus / Truck (2 axle) | ₹1,095 | ₹1,635 | ₹1,369 |
| 3-axle commercial | ₹1,190 | ₹1,785 | ₹1,488 |
| 4–6 axle (MAV) | ₹1,710 | ₹2,565 | ₹2,138 |
| 7+ axle (oversized) | ₹2,080 | ₹3,125 | ₹2,600 |
One way, 539 km, at Bihar prices (petrol ₹114.33/L, diesel ₹100.28/L). Typical highway mileage; change it in the calculator for your car.
| Car type | Petrol | Diesel | CNG | Electric |
|---|---|---|---|---|
| Hatchback | ₹3,426 | ₹2,459 | ₹1,930 | ₹1,349 |
| Sedan | ₹4,112 | ₹2,847 | ₹2,280 | ₹1,541 |
| SUV / MUV | ₹5,607 | ₹3,864 | ₹2,951 | ₹1,962 |
Petrol is cheapest in Sikkim (₹109.06/L) and dearest in Bihar (₹114.33/L). Filling the ~36 litres you need in Sikkim saves about ₹190 versus buying it all in Bihar.
For the same sedan, fuel for one way costs ₹4,112 on petrol, ₹2,847 on diesel and about ₹1,541 on electric (public fast charging at ₹20/kWh; home charging is far cheaper). An EV with ~350 km real range needs about 1 charging stop on the way.
The pass costs ₹3,075 for 200 crossings (₹15.38 per crossing) on NHAI plazas. This trip uses 3 crossings one way — worth about ₹46 of pass value against ₹320 in regular fees. If you drive highways often, the pass pays off on this route.
Return within 24 hours and the car toll for the round trip is ₹485 instead of ₹640 — a 24% discount that FASTag applies automatically.
About ₹320 one way with FASTag across 3 plazas. A return within 24 hours costs ₹485. Without FASTag you pay 1.25x by UPI: ₹400.
3 on the fastest route: Raje (Old Naraur), Asanpur, Satbhaiya.
About 36 litres for a car doing 15 km/l (₹4,112 at Patna prices). A hatchback at 18 km/l needs ~30 L; an SUV at 11 km/l needs ~49 L.
Around ₹4,432 one way for a petrol sedan (fuel ₹4,112 + toll ₹320), or ₹8,708 for a same-day return. Split between four people that is ₹1,108 each, one way.
Plan on about 9 h 5 min including short breaks. Free-flowing traffic can do it in 6 h 38 min, but towns, trucks and plaza queues usually add time.
One way with FASTag: bus/2-axle truck ₹1,095, 3-axle ₹1,190, 4–6 axle ₹1,710, 7+ axle ₹2,080.
Yes, plazas charge the same fee in both directions, so the Gangtok to Patna toll is the same ~₹320 for a car. Fuel cost differs only if you fill up at Gangtok's state price.
Fees are revised every 1 April and some plazas change mid-year, so treat results as a close estimate. Spotted a wrong fee or a missing plaza? Tell us — we fix reported errors within 72 hours and log them on our corrections page.
Built and maintained by Nikhil Shrivastava. Full method: how the calculator works.
Last updated: 24 October 2026