4km row

Then:

10 reps each of:

Push ups
TRX reverse lunge - left
Push ups
TRX reverse lunge - right
Push ups
TRX push ups
Bosu bulgarian split squat - left
Push ups
Bosu bulgarian split squat - right
Push ups
TRX flies
Push ups
TRX shoulder pulls
Push ups
KB swings
Push ups
TRX row/bicep curl combo
Push ups

When doing all those push ups, use all the different variations that you know.