Runners, what I am doing wrong? Will I ever make it to 10km?

Perhaps I need to slow down

How to go from 5 to 10km?. Image credit.

Pulled up at 8.8km

1st try: Trail run 8.8km 4:46 min/km. Image credit: author.

Second try — only made 6.4km!

2nd try: Trail run 6.4km 4:55m/km. Image credit: author.

Optimistically curious, 70+ trail runner; 2X cancer; diabetic; Click “FOLLOW” for living longer better tips | Weekly Newsletter 👉 wja.is/newsletter