Held annually along Istanbul’s picturesque Caddebostan coastline, the Cadde 10K-21K event is organized by Kadıköy Municipality and offers a 10-kilometer race, a 21-kilometer half marathon, and children’s runs of 400m, 500m, and 600m distances. The event typically attracts around 5,000 runners, providing a traffic-free and vehicle-free course that starts and ends at the Caddebostan Event Area on Çetin Emeç Boulevard, with routes extending along Bağdat Avenue. Participants enjoy a festive atmosphere with DJ performances and warm-up sessions led by professional trainers. The event also serves as a criterion race for the Istanbul Marathon, offering awards to top finishers and commemorative medals to all participants.  
Races
Half Marathon
10k
Race Date:
25 May, 2025
The Cadde 21K Half Marathon is scheduled for Sunday, May 25, 2025, in Istanbul, Turkey, and is organized by Kadıköy Municipality. Held on the flat, closed-road Caddebostan coast, this race meets Istanbul Marathon qualification standards and combines high-performance running with live music and community spirit.
Weather based on historical averages. Route data provided by Strava, based on last year's race.
FAQs
What is the Cadde 21K?
How long is the Cadde 21K?
Where does the Cadde 21K take place?
What is the elevation gain of the Cadde 21K?
How can I prepare for the Cadde 21K?
How do I choose the right training plan for the Cadde 21K?
The Cadde 21K Half Marathon is scheduled for Sunday, May 25, 2025, in Istanbul, Turkey, and is organized by Kadıköy Municipality. Held on the flat, closed-road Caddebostan coast, this race meets Istanbul Marathon qualification standards and combines high-performance running with live music and community spirit.
The Cadde 21K is 21km long.
The Cadde 21K takes place in Istanbul, Türkiye.
Runna classifies the Cadde 21K elevation profile as Flat.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Cadde 21K?
The Cadde 21K Half Marathon is scheduled for Sunday, May 25, 2025, in Istanbul, Turkey, and is organized by Kadıköy Municipality. Held on the flat, closed-road Caddebostan coast, this race meets Istanbul Marathon qualification standards and combines high-performance running with live music and community spirit.
How long is the Cadde 21K?
The Cadde 21K is 21km long.
Where does the Cadde 21K take place?
The Cadde 21K takes place in Istanbul, Türkiye.
What is the elevation gain of the Cadde 21K?
Runna classifies the Cadde 21K elevation profile as Flat.
How can I prepare for the Cadde 21K?
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Cadde 21K?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
More
Sport:
Running
Tags:
Major City
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Cadde 10K-21K or Kadıköy Belediyesi. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Cadde 10K-21K website.
