Somerville to Groton train times
Trains run every 3 hours between Somerville and Groton. The earliest departure is at 5:50 AM in the morning, and the last departure from Somerville is at 11:40 PM which arrives into Groton at 8:14 AM. All services require a transfer, and take on average 4h 56m. The schedules shown below are for the next available departures.
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4h 15m • 1 change
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4h 26m • 1 change
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4h 16m • 1 change
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4h 28m • 1 change
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Departing Saturday, August 22, 2026
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4h 30m • 1 change
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4h 15m • 1 change
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4h 16m • 1 change
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4h 16m • 1 change
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Departing Sunday, August 23, 2026
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4h 34m • 1 change
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4h 13m • 1 change
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4h 46m • 1 change
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4h 15m • 1 change
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Departing Monday, August 24, 2026
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4h 34m • 1 change
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4h 13m • 1 change
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4h 46m • 1 change
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4h 15m • 1 change
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Departing Tuesday, August 25, 2026
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4h 34m • 1 change
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4h 13m • 1 change
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4h 46m • 1 change
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4h 15m • 1 change
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Departing Wednesday, August 26, 2026
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4h 34m • 1 change
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4h 13m • 1 change
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4h 46m • 1 change
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4h 15m • 1 change
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