- What pace do you need for a 4h30 marathon?
- 6:24 /km, or 9.4 km/h. You'd hit the half in 2:07:59 if the pace stays steady — that's the safest way to race it.
- What 10K time do you need to target 4h30 in the marathon?
- Around 58:42, based on Riegel's formula. Provided you've got the endurance: without long runs, that 10K isn't enough.
- How many weeks does it take to prepare for a marathon?
- Often 12 to 20 weeks if you already run regularly. Your plan, though, runs from the week you start right through to your race date, whatever it is.