Yeah I don't think the battery will do well for all that, would need to take a small break with a battery recharge possibly.

Some do, I had the Garmin 645 music for this.

I just switched from Garmin, the heart rate tracking is much better during workouts on the pixel. Enjoying the first few days not needing a chest strap!

Garmin of course had a lot of extra details for running, but I've stopped needing that. It depends the type of fitness you're doing in the end.