How to get from Gressy to Saclay by RER and bus?

Gressy to Saclay - Bus Schedule

The 7720 bus from Gressy to Saclay runs from 04:26 to 23:24, with departures every 15-35 min. The trip takes about 2 hr 25 min, with regular service throughout the operating hours.

From Gressy to Saclay by RER and bus

To get from Gressy to Saclay in Paris, you’ll need to take 2 bus lines and one RER line: take the 7720 bus from La Rosée station to Gare de Roissypôle - Aéroport station. Next, you’ll have to switch to the B RER and finally take the 4606 bus from Gare de Massy - Palaiseau station to Christ de Saclay station. The total trip duration for this route is approximately 2 hr 25 min. The RER and bus schedule from Gressy may change. We recommend you check the updated RER and bus schedule to Saclay on the Moovit app.

145min
Walk to bus station
Bus - 77207720
RER - B
RER - B
Bus - 46064606
Walk to Saclay
Leaves from La Rosée

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    La Rosée
    1.66 km • 21 min
  • 2
    Bus - 77207720
    Wait for bus
    7720
    Gare de Roissypôle - Aéroport Cdg1 Terminal 3 (C4)
  • 3
    Ride to bus station
    Ride to bus station
    Gare de Roissypôle - Aéroport
    15 min
  • 4
    Walk to RER station
    Walk to RER station
    Aéroport Cdg 1 (Terminal 3)
    120 m • 2 min
  • 5
    RER - B
    Wait for RER
    B
    Saint-Rémy-Lès-Chevreuse
  • 6
    Ride to RER station
    Ride to RER station
    Massy - Palaiseau
    61 min
  • 7
    Walk to bus station
    Walk to bus station
    Gare de Massy - Palaiseau
    130 m • 2 min
  • 8
    Bus - 46064606
    Wait for bus
    4606
    Christ de Saclay
  • 9
    Ride to bus station
    Ride to bus station
    Christ de Saclay
    26 min
  • 10
    Walk to Saclay
    Walk to
    Saclay
    190 m • 3 min
*Duration based on 8am traffic
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Public transit directions from Gressy to Saclay

The distance between Gressy, Paris and Saclay, Paris is approximately 77.28 km, which can typically be travelled in 145 min. Moovit will show you the directions from Gressy to Saclay by RER and bus, so no matter how you choose to travel in Paris – you will always have plenty of easy options.

RER And Bus schedule from Gressy to Saclay

To check the RER and bus schedule from Gressy to Saclay using the Moovit app, first download and open the app on your smartphone. Enter your starting point (Gressy) and destination (Saclay), then select the desired date and time of travel. Moovit will show all available RER and bus routes, estimated travel times, and any required transfers. You can view detailed departure and arrival times for each RER and bus, as well as real-time updates for delays or changes. Use this information to plan your trip and stay up to date with the latest RER and bus schedules.

Related Routes

Questions & Answers

  • What is the fastest way to get from Gressy to Saclay?

    The fastest way takes 145 minutes, using Bus line 7720, RER line B, Bus line 4606.

  • Is there a direct bus between Gressy and Saclay in Paris?

    No, you’ll have to take 2 bus lines and one RER line in total. The total travelling time is 2 hr 25 min.

  • Which bus line goes from Gressy to Saclay in Paris?

    The 7720 bus line goes from La Rosée station near Gressy to Gare de Roissypôle - Aéroport station. From there you’ll have to take one bus line and one RER line till Gare de Roissypôle - Aéroport station near Saclay in Paris.

  • How long does it take to travel from Gressy to Saclay in Paris by bus and RER?

    The total travel time between Gressy and Saclay in Paris by bus and RER is about 2 hr 25 min.

  • Where do I get on the bus near Gressy to get to Saclay in Paris?

    Get on the 7720 bus from the La Rosée stop near Gressy in Paris.

  • Where do I get off the bus when travelling between Gressy and Saclay in Paris?

    Get off the bus at the Gare de Roissypôle - Aéroport stop, which is closest to Saclay in Paris.

Popular Routes