How to get from Orsay to Boissy-Le-Sec by RER and bus?

From Orsay to Boissy-Le-Sec by RER and bus

To get from Orsay to Boissy-Le-Sec in Paris, you’ll need to take 2 RER lines and one bus line: take the B RER from Le Guichet station to Saint-Michel Notre-Dame station. Next, you’ll have to switch to the C RER and finally take the 4414 bus from Gare D'Étampes station to Le Rotoir station. The total trip duration for this route is approximately 2 hr 30 min. The RER and bus schedule from Orsay may change. We recommend you check the updated RER and bus schedule to Boissy-Le-Sec on the Moovit app.

150min
Walk to RER stationRER - B
RER - B
RER - C
RER - C
Bus - 44144414
Walk to Boissy-Le-Sec
Leaves from Le Guichet

Step by Step

  • 1
    Walk to RER station
    Walk to RER station
    Le Guichet
    1.21 km • 16 min
  • 2
    RER - B
    Wait for RER
    B
    Aéroport Charles de Gaulle 2 (Terminal 2)
  • 3
    Ride to RER station
    Ride to RER station
    Saint-Michel Notre-Dame
    33 min
  • 4
    RER - C
    Wait for RER
    C
    Saint-Martin D'Étampes
  • 5
    Ride to RER station
    Ride to RER station
    Étampes
    63 min
  • 6
    Walk to bus station
    Walk to bus station
    Gare D'Étampes
    10 m • 1 min
  • 7
    Bus - 44144414
    Wait for bus
    4414
    Grande Rue
  • 8
    Ride to bus station
    Ride to bus station
    Le Rotoir
    17 min
  • 9
    Walk to Boissy-Le-Sec
    Walk to
    Boissy-Le-Sec
    10 m • 1 min
*Duration based on 8am traffic

Alternative route from Orsay to Boissy-Le-Sec by RER and bus via 4617, C and 4414

To get from Orsay to Boissy-Le-Sec in Paris, you’ll need to take 2 bus lines and one RER line: take the 4617 bus from Gare du Guichet station to Gare D'Epinay-Sur-Orge station. Next, you’ll have to switch to the C RER and finally take the 4414 bus from Gare D'Étampes station to Le Rotoir station. The total trip duration for this route is approximately 2 hr 22 min. The RER and bus schedule from Orsay may change. We recommend you check the updated RER and bus schedule to Boissy-Le-Sec on the Moovit app.

142min
Walk to bus station
Bus - 46174617
RER - C
RER - C
Bus - 44144414
Walk to Boissy-Le-Sec
Leaves from Gare du Guichet

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Gare du Guichet
    1.29 km • 17 min
  • 2
    Bus - 46174617
    Wait for bus
    4617
    Gare D'Epinay-Sur-Orge
  • 3
    Ride to bus station
    Ride to bus station
    Gare D'Epinay-Sur-Orge
    39 min
  • 4
    Walk to RER station
    Walk to RER station
    Épinay-Sur-Orge
    390 m • 6 min
  • 5
    RER - C
    Wait for RER
    C
    Saint-Martin D'Étampes
  • 6
    Ride to RER station
    Ride to RER station
    Étampes
    36 min
  • 7
    Walk to bus station
    Walk to bus station
    Gare D'Étampes
    10 m • 1 min
  • 8
    Bus - 44144414
    Wait for bus
    4414
    Grande Rue
  • 9
    Ride to bus station
    Ride to bus station
    Le Rotoir
    17 min
  • 10
    Walk to Boissy-Le-Sec
    Walk to
    Boissy-Le-Sec
    10 m • 1 min
*Duration based on 8am traffic
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Public transit directions from Orsay to Boissy-Le-Sec

The distance between Orsay, Paris and Boissy-Le-Sec, Paris is approximately 91.52 km, which can typically be travelled in 150 min. Moovit will show you the directions from Orsay to Boissy-Le-Sec 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 Orsay to Boissy-Le-Sec

To check the RER and bus schedule from Orsay to Boissy-Le-Sec using the Moovit app, first download and open the app on your smartphone. Enter your starting point (Orsay) and destination (Boissy-Le-Sec), 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

Alternative route from Orsay to Boissy-Le-Sec by RER and bus via 4617, C and 4414

To get from Orsay to Boissy-Le-Sec in Paris, you’ll need to take 2 bus lines and one RER line: take the 4617 bus from Gare du Guichet station to Gare D'Epinay-Sur-Orge station. Next, you’ll have to switch to the C RER and finally take the 4414 bus from Gare D'Étampes station to Le Rotoir station. The total trip duration for this route is approximately 2 hr 22 min. The RER and bus schedule from Orsay may change. We recommend you check the updated RER and bus schedule to Boissy-Le-Sec on the Moovit app.

142min
Walk to bus station
Bus - 46174617
RER - C
RER - C
Bus - 44144414
Walk to Boissy-Le-Sec
Leaves from Gare du Guichet

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Gare du Guichet
    1.29 km • 17 min
  • 2
    Bus - 46174617
    Wait for bus
    4617
    Gare D'Epinay-Sur-Orge
  • 3
    Ride to bus station
    Ride to bus station
    Gare D'Epinay-Sur-Orge
    39 min
  • 4
    Walk to RER station
    Walk to RER station
    Épinay-Sur-Orge
    390 m • 6 min
  • 5
    RER - C
    Wait for RER
    C
    Saint-Martin D'Étampes
  • 6
    Ride to RER station
    Ride to RER station
    Étampes
    36 min
  • 7
    Walk to bus station
    Walk to bus station
    Gare D'Étampes
    10 m • 1 min
  • 8
    Bus - 44144414
    Wait for bus
    4414
    Grande Rue
  • 9
    Ride to bus station
    Ride to bus station
    Le Rotoir
    17 min
  • 10
    Walk to Boissy-Le-Sec
    Walk to
    Boissy-Le-Sec
    10 m • 1 min
*Duration based on 8am traffic

Questions & Answers

  • What is the fastest way to get from Orsay to Boissy-Le-Sec?

    The fastest way takes 150 minutes, using RER line B, RER line C, Bus line 4414.

  • What is the alternative route to get from Orsay to Boissy-Le-Sec?

    The alternative route takes 142 minutes, using Bus line 4617, RER line C, Bus line 4414.

  • Is there a direct RER between Orsay and Boissy-Le-Sec in Paris?

    No, you’ll have to take 2 RER lines and one bus line in total. The total travelling time is 2 hr 30 min.

  • Which RER line goes from Orsay to Boissy-Le-Sec in Paris?

    The B RER line goes from Le Guichet station near Orsay to Aéroport Charles de Gaulle 2 (Terminal 2) station. From there you’ll have to take one RER line and one bus line till Aéroport Charles de Gaulle 2 (Terminal 2) station near Boissy-Le-Sec in Paris.

  • How long does it take to travel from Orsay to Boissy-Le-Sec in Paris by RER and bus?

    The total travel time between Orsay and Boissy-Le-Sec in Paris by RER and bus is about 2 hr 30 min.

  • Where do I get on the RER near Orsay to get to Boissy-Le-Sec in Paris?

    Get on the B RER from the Le Guichet station near Orsay in Paris.

  • Where do I get off the RER when travelling between Orsay and Boissy-Le-Sec in Paris?

    Get off the RER at the Aéroport Charles de Gaulle 2 (Terminal 2) stop, which is closest to Boissy-Le-Sec in Paris.

Popular Routes