How do I keep my Pixel 8 Pro battery alive during a 50-mile run without throttling?

i just finished a 50-mile ultra marathon in 3:12 but my pixel 8 pro died after 30 minutes of continuous gps and music playback tbh the battery life is a joke rn

the phone has a 5000mah li-po and an oled display that should be efficient yet the cpu governor flips to performance mode when the gps kicks in causing thermal throttling and a 30% drop in battery percentage per hour

i tried disabling background sync turning off bluetooth and using the power saving mode but even then the battery hit 20% in 25 minutes

i also used a garmin forerunner 955 to track the run but the phone still drained faster than the watch which only used 5% of its 600mah battery over the same distance

anyone else experiencing this or is there a way to tweak the android 13 settings or use a usb-c pd 100w charger to keep the phone alive during long runs? maybe a custom kernel or a different battery saver app would help lol

p.s if anyone wants to know how i managed to finish the run in record time just let me know but for now i’m just hoping the phone can keep up