My recent driving marathon happened 2 weeks ago.
1 - Isb to lhr via M2 400+ km.from home to home.
2 - lhr to jhang 230Km/each side. so total 460Kms
3 - Lhr to jhang 230kms and then from jhang to isb approax 430kms
Total driving (kms) : 1520 kms
And after that slept like a dead lodge for 24 hrs..:), and also had to change engine oil ,oil/air filter as well.