The route has been altered to pass many of the venues for next year's Commonwealth Games.
Though Joseph Kibor and Jason Mbote have both won the men's race three times, Kenyan Birech would be the first to claim three victories in a row.
Two-time Olympic 10,000m champion Gebrselassie, who turned 40 in April, won the half marathon at the Great Birmingham Run in 2011.
"This is a great race," he told BBC Scotland. "And I am here to win."
Fellow Ethiopian Bezunesh Bekele was the fastest woman in last year's half marathon in Glasgow.
Dougie Vipond will host BBC Two's coverage of the event while David Currie, Liz McColgan and Rhona McLeod will be out and about on the course and commentary will be provided by Brendan Foster and Paul Dickenson.
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