By Jeffrey Schaub

KCBS_740 SANTA ROSA (KCBS) — There was controversy at the Santa Rosa Marathon over the weekend, and it’s not the first time.

Several runners were steered off course by a race pacer, sending the entrants nearly a mile in the wrong direction before turning around and finishing the race.

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“The number one thing you have to do when putting up a race is make sure that everything is completely clear,” Alex Wolf-Root, who works at Heart & Sole, a running shop in Santa Rosa told KCBS.

The mistake cost the runners valuable time and could potentially impact entry for some into the 2017 Boston Marathon.

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“If somebody in ahead of you goes the wrong way, it’s a chain reaction – everybody follows – and that’s kind of what happened,” Heart & Sole owner Danny Aldridge told KCBS.

In 2013, a runner deliberately went the wrong way, cutting off other participants, and taking 1st place before being disqualified. A mishap in 2015 also marred final results, but this year’s mistake might have affected the field the most.

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No word yet from race organizers about what went wrong.