If Virgin Atlantic has its way, one day in the not-too-distant future you'll able to fly from the UK to Australia non-stop in a measly 17 hours (don't forget your surgical stockings, though). At the moment it takes something like a mere 22 hours or so. And if you think that's a long journey, spare a thought for the h2g2 Editor who once spent 42 continuous hours on an Indian train trying to go from Mysore in the south to Delhi in the north.

Maybe you can beat that. Maybe you've walked from Land's End to John o' Groats, or undertaken some such deeply unnecessary endurance test? 'Not likely,' we hear you say. Then again, you could have taken part in the 2008 Paris to Dakar Rally? No? Never mind - try this question instead. For this week's talking point we'd like to know: what is the longest continuous 'journey from hell' you've ever undertaken (in terms of hours spent rather than distance covered)?

• First off, how long did it take?

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  Did you do the journey by choice, or was it forced upon you due to circumstances beyond your control?

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  Maybe the journey actually turned out to be very pleasant?

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  Would you do it again?

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  What did you learn from the experience?

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  Had the journey ever been done before?

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  Did something break down and you actually spent a large chunk of it stationary?

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  Was it your journey to work today?