I think I need a more comfortable seat

[Naranja_CT5+]

I swapped the RAD seat to a 2023 Trek suspension seat. After nearly 40 km it became unbearable to continue riding. I took off the RAD seat because I wanted to use Treks suspension post. I'll test how the RAD seat with the Trek post next.

Total Distance: 38.5 km
Elev gain: 277 m
Avg speed: 17.7 km/h
Energy used: 4 bars

[John Rose]

The chronological order is a bit vague. Which combo was "unbearable"?
Was it the Rad seat on the Rad post, or the Trek Seat on the Trek post?