My First Marathon. Part 4
I turned on the Strava.com app and pushed a the heart rate monitor button. I ran. It was started with 25 runners, I began in the middle of the group* {=pack}. Due to my late arriving arrival at the starting camp gate, I was able neither able to worry nor to take a look at** other participants. At first, my plan was to find out who was going to run the 5:30-5:40 min per km. That pace gave me a possibility to finish in 4 four*** hours. So I would follow that runner.
*For running, we tend to call the waves of groups "packs" (at least in the US).
**In this context, you could also say: "...to size up the other participants", because you're trying to determine who you could run with and keep pace.
***Numbers less than ten are spelled out in English.