Bosphorus Run 10.5K: Pacing Lessons Before the Istanbul Marathon

A 46:20 finish at the Bosphorus Run 10.5K gave me the fitness check I wanted ahead of the Istanbul Marathon on November 1. I crossed the line feeling strong, but the splits showed room to run faster: I eased off in the middle kilometers, then found my pace again. The clearest takeaway was simple: hold focus when the legs still have more to give.

Sunday began around 7:20 a.m., leaving time to prepare for the 9:15 start. I took a ferry at about 8:15, then a shuttle to Kuruçeşme. After heavy rain and storms the previous week, Istanbul offered a clear autumn morning with pleasant temperatures and the Bosphorus alongside the course.

I wanted a quick, competitive run, but set no personal best target. The goal was to enjoy the 10.5K and see how my fitness was developing before the next event. That distinction helped keep the day in perspective: I could push while still treating the effort as useful preparation.

A crowded start and a steadier rhythm

I spotted friends from Anadoluhisarı Atletizm near the line and ran with them briefly before moving ahead. Yakup had started at a faster pace, so I concentrated on settling into my own. That proved harder than expected. The early pack forced frequent changes of direction, quick accelerations into gaps and overtaking. On a busy course, those small efforts add up and make an even rhythm difficult to find.

My legs felt good, and the opening five kilometers averaged about 4:25 per kilometer. The fourth kilometer was around 4:17/km. Breathing stayed controlled, and I felt comfortable at that pace, though I likely spent more energy than necessary weaving through runners.

At roughly kilometer six, I chose to back off. There was no notable fatigue or discomfort; I simply let the pace drift toward 4:36/km. Looking back, that was the main tactical error. I had enough in reserve to continue at my earlier effort, but I became too comfortable through the middle section.

Tarık caught up, and seeing a familiar face helped me lift the pace again to about 4:25/km. The moment was a useful reminder that maintaining speed takes attention as well as fitness. A runner can feel capable and still lose momentum if concentration slips. I want to carry that lesson into the next race: keep checking the effort and avoid easing off without a reason.

Kit that helped—and kit that distracted

I wore a Dagestan T-shirt and Nike ZoomX Flyknit running shoes, which performed as expected. The new Under Armour shorts were less successful. I hadn’t tried them in training, and during the run they felt a little loose. Their deep pockets let items bounce around, while there was no practical way to carry my phone. I ended up holding it for the entire 10.5 kilometers.

That was an avoidable distraction on a day when I wanted to focus on pace. The lesson applies even to a small piece of kit: check its fit and function in training before relying on it in a race. A comfortable feel at home doesn’t tell you how shorts will behave over several kilometers of running.

Finishing with energy in reserve

With around two kilometers to go, I put on some favorite Russian songs and concentrated on carrying a strong pace to the finish. The music, the Bosphorus views and the sense that I still had energy made the final stretch especially enjoyable. My legs remained strong, and I crossed the line satisfied with the effort.

• Distance: 10.42 km
• Finish time: 46:20
• Average pace: 4:27/km
• Fastest early kilometer: approximately 4:17/km

Reviewing the splits afterward, I felt I could have finished about a minute sooner by holding my earlier pace through kilometers six to eight, perhaps gaining a little more with a stronger final push. Still, finishing with strength rather than exhaustion is a positive sign before the next start line. The run showed that I had more to give, and that a controlled middle section could help me use it.

A good course, with one event day snag

The event was well organized overall, with an enjoyable atmosphere, favorable weather and the special setting of a run beside the Bosphorus. My main criticism was the drop-bag area, which seemed somewhat disorganized. Runners finishing in larger groups may have faced longer waits; because I finished relatively early, collecting my bag wasn’t a problem.

The race left me with five practical reminders: preserve momentum when the body feels strong, avoid wasteful weaving and sharp accelerations, trust the fitness that shows up in the final kilometers, test gear before race day, and stay mentally engaged through the middle of the course. None requires a dramatic change. Together, they could make the next effort more consistent.

My next goal is the Istanbul Marathon 15K on November 1. I want to run with more control, sustain a stronger average pace and avoid giving away seconds in the middle kilometers. The Bosphorus Run suggests my fitness is moving in the right direction, while also showing where focus can improve. Not every race needs to produce a personal best; this one gave me a strong finish, useful feedback and another reason to enjoy running.