All lanes of the M1 are now open after the accident involving five lorries between Junction 25 and 26.
The motorway is still congested with journeys between junctions 24 and 25 taking 40 minutes.
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Police say he has links to the Hall Green and Olton areas of Birmingham and could have made his way there.
Thousands of runners took to the city's streets in this year's 10k run.
Police are appealing for witnesses who may have seen the fatal collision to come forward.