Thousands getting set for Cambridge Half Marathon
Matthew Webb/BBCAbout 15,000 runners are putting their final preparations into place ahead of the Cambridge Half Marathon on Sunday.
The atmospheric 13.1-mile (21.1km) event is a popular one on the running calendar as - now in its 15th year - it is known for being a flat course, giving people a great chance of a personal best time.
Historical sites along the way include King's College, Cambridge University Botanic Garden and the Corpus Clock.
Here's everything you need to know about this year's event.
What is the route and where does it start?
Runners will join the start line and finish the race on Victoria Avenue, next to the event's village on Midsummer Common.
The first wave of speedier competitors will set off at 09:30 GMT, with participants asked to arrive on site at least 45 minutes before.
Entrants all start in the city centre before venturing out through Grantchester and past Trumpington.
Toilets are available at each drink station along the route, as well as within the event village.
Where can I park?
Organisers encourage those arriving from outside the city to use park and ride buses.
These include sites at Babraham Road, Longstanton, Madingley Road, Milton, Newmarket Road, St Ives, and Trumpington.
All car parks will remain open throughout the day of the event and bus services will also continue to run.
Bus stops on Trumpington Street and Downing Street will be suspended, with an alternative stop in place on Emmanuel Street.
People cycling are being encouraged to use the bike park on Midsummer Common, which is free for all the athletes to use.
Which roads will be closed?
Organisers warn that 36 roads in and around the city will be closed - either in one direction or both.
Closures includ Jesus Lane in both directions, Milton Road going west, Grantchester Road, High Street and Mill Way in both directions, and Trumpington Road, heading south.
Some closures are in place from 04:00, with Victoria Avenue being the last to reopen at 19:00.
Signs detailing diversions will be around the city centre and on the inner and outer ring roads.
People are able to view the road closures on the marathon's website.
What about the runners?
For those taking part, organisers have a special event village where people can leave clothing and bags.
There are a variety of food and drink stalls within the event village, giving people the chance to get that all-important pre-race espresso, or perhaps one last sip of energy drink.
Runners can wear an old top to help stay warm ahead of the start - with the clothing then donated to charity thanks to collection points just before the start.
And, after the running is over, finishers are given their goodie bag packed full of snacks, along with drinks.
And don't forget to collect your race medal - you've done the hard work.
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