421I 8370 La Rochelle – Paris Montparnasse Hall 1 - 2

View line 421I

La Rochelle 05:39 → Paris Montparnasse Hall 1 - 2 08:40 Mon, Tue, Wed, Thu, Fri, Sat 3 h 01 min · 6 stops SNCF

Running now · updated 07:12

Between Saint-Maixent-L'École and Poitiers +10 min

Estimated arrival at Paris Montparnasse Hall 1 - 2 08:50 08:40 · 124 km/h

  1. La Rochelle05:39
  2. Surgères05:57
  3. Niort06:18
  4. Saint-Maixent-L'École06:34
  5. Poitiers07:08
  6. Paris Montparnasse Hall 1 - 208:40

Today it is running worse than usual: typical arrival delay is +5 min; 38% of the last 24 runs arrived on time.

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On-time · 30 days
38%
9/24 runs under 3 min
RT coverage: 23 full · 1 partial · 1 no data
On-time · 90 days
33%
12/36 runs under 3 min
RT coverage: 35 full · 1 partial · 1 no data
Typical delay
+5min
Median at arrival, 90 days
30 days: +5 min
P90
+25min
9 in 10 runs arrive with less than this
30 days: +22 min

Last 30 days

Arrival delay at Paris Montparnasse Hall 1 - 2, in minutes. One bar per run.

  • On time (<3 min)
  • 3–10 min
  • 10–30 min
  • 30+ min
  • Partial coverage
  • No data

Worst days

  • Mon 2 Nov Max en route +55 min · last fix heading to Paris Montparnasse Hall 1 - 2 +55 min
  • Mon 28 Sept Max en route +55 min · last fix heading to StopPoint:OCETGV INOUI-8739100 +55 min
  • Wed 7 Oct Max en route +40 min · last fix heading to Paris Montparnasse Hall 1 - 2 +30 min
  • Thu 5 Nov Max en route +25 min · last fix heading to Paris Montparnasse Hall 1 - 2 +25 min
  • Wed 28 Oct Max en route +25 min · last fix heading to Paris Montparnasse Hall 1 - 2 +25 min

Distribution · 90 days

36 runs with a known final delay. On time = under 3 min, the same cut the map uses.

  • Early 0% · 0
  • On time 33% · 12
  • 3–10 min 25% · 9
  • 10–30 min 33% · 12
  • 30+ min 8% · 3

On-time by weekday

  • 13% M n=8
  • 33% T n=6
  • 0% W n=6
  • 17% T n=6
  • 50% F n=4
  • 100% S n=6
  • — S n=0

Stops and timetable

Timetable of the latest run from the operator’s GTFS (6 stops).

Last 90 days, 36 runs. At intermediate stops it is an estimate from the delay at origin and destination. Delays over 2 h count as “> 2 h”: our data does not measure them exactly.

StopSched.Usually 9 days in 10Today
La Rochelle
05:39on time on timePassed
Surgères
05:57 / 06:00≈ +1 min ≈ +3 minPassed
Niort
06:18 / 06:21≈ +1 min ≈ +6 minPassed
Saint-Maixent-L'École
06:34 / 06:37≈ +2 min ≈ +9 minPassed
Poitiers
07:08 / 07:14≈ +2 min ≈ +12 minNext
Paris Montparnasse Hall 1 - 2
08:40+5 min +25 min

Each run is closed into train_runs (country, train number, service day) from the live positions. Final delay = last delay seen. Partial coverage: the feed stopped before the final stop (last value used, hatched in the chart). No data: a run without any valid delay; counts as neither on time nor late. Data collected since 11 July 2026.

Will I make my connection?

Pick where you get off and how many minutes you have until your next train. We work it out from what this train did over the last 90 days.

Include the time to change platforms. It is an estimate from past data, not a guarantee. Days more than 2 h late count as a missed connection.

Recent runs

DateLast stopFinalMax
Sat 7 NovPoitiers 07:09Partial coverage0 min+5 min
Thu 5 NovParis Montparnasse Hall 1 - 2 09:04+25 min+25 min
Wed 4 NovParis Montparnasse Hall 1 - 2 08:49+10 min+10 min
Tue 3 NovParis Montparnasse Hall 1 - 2 08:400 min+5 min
Mon 2 NovParis Montparnasse Hall 1 - 2 09:34+55 min+55 min
Sat 31 OctParis Montparnasse Hall 1 - 2 08:410 min—
Fri 30 OctParis Montparnasse Hall 1 - 2 08:41No data—
Thu 29 OctParis Montparnasse Hall 1 - 2 08:46+5 min+5 min
Wed 28 OctParis Montparnasse Hall 1 - 2 09:06+25 min+25 min
Tue 27 OctParis Montparnasse Hall 1 - 2 08:56+15 min+15 min
Mon 26 OctParis Montparnasse Hall 1 - 2 08:46+5 min+5 min
Sat 24 OctParis Montparnasse Hall 1 - 2 08:410 min+5 min
Fri 23 OctParis Montparnasse Hall 1 - 2 08:51+10 min+10 min
Thu 22 OctParis Montparnasse Hall 1 - 2 08:410 min—
Wed 21 OctParis Montparnasse Hall 1 - 2 08:51+10 min+10 min
Tue 20 OctParis Montparnasse Hall 1 - 2 08:46+5 min+5 min
Mon 19 OctParis Montparnasse Hall 1 - 2 08:410 min—
Sat 17 OctParis Montparnasse Hall 1 - 2 08:410 min—
Fri 16 OctParis Montparnasse Hall 1 - 2 08:46+5 min+5 min
Thu 15 OctParis Montparnasse Hall 1 - 2 08:46+5 min+5 min
Wed 14 OctParis Montparnasse Hall 1 - 2 08:46+5 min+5 min
Tue 13 OctParis Montparnasse Hall 1 - 2 08:46+5 min+5 min
Mon 12 OctParis Montparnasse Hall 1 - 2 08:52+10 min+10 min
Sat 10 OctParis Montparnasse Hall 1 - 2 08:410 min+5 min
Fri 9 OctParis Montparnasse Hall 1 - 2 08:410 min+10 min
Thu 8 OctParis Montparnasse Hall 1 - 2 09:06+25 min+25 min
Wed 7 OctParis Montparnasse Hall 1 - 2 09:12+30 min+40 min
Tue 6 OctParis Montparnasse Hall 1 - 2 08:410 min+45 min
Mon 5 OctStopPoint:OCETGV INOU~4e4cc3ae 08:57+15 min+15 min
Mon 28 SeptStopPoint:OCETGV INOUI-8739100 08:39+55 min+55 min