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At their closest orbital point, Earth and Saturn are about 9 AU apart (1.35 billion kilometres)

The fastest manned spacecraft we have made so fare were the Apollo spacecraft which went to the moon; they averaged about 40,000 km/h. It took them 3 days.

At that speed it would take an astronaut about 3 years and 10 months to travel that distance.
This assumes they could travel in a straight line, however since the two planets are moving the path would actually be considerably longer.

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15y ago

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