Sub 2 hour half marathon pace: 5:41 per kilometre

• 2:00:00 5:41 /km
•   9:09 /mi

Splits

Splits assume an even pace — they show what an even race looks like, not a pacing strategy. Going out faster or slower than these numbers is a choice, and one that costs more than it usually gains.

Training paces

Training paces are derived from Daniels' Running Formula (4th edition (2021)) with the Daniels–Gilbert oxygen-cost equations. VDOT is back-calculated from a race result, not measured.

Equivalent VDOT: 36.5

Two hours for a half marathon is 5:41 per kilometre, or 9:09 per mile, held for 21.1 km. It is the most common half marathon goal there is, and for many runners it is the first time the distance stops being about survival and becomes about a number.

What this target asks

Five forty-one per kilometre is conversational for the first ten kilometres and no longer conversational for the last five. That is the whole shape of this target: it is almost entirely an endurance goal, and the training that gets you there looks like more running rather than harder running.

The derived numbers above tell the same story. The equivalent VDOT is back-calculated from 2:00:00 over the half marathon, and the training paces are derived from it. At this band the easy range starts only about forty seconds per kilometre slower than goal pace (the exact range is in the table above) — which is exactly why the usual mistake here is running every training kilometre at goal pace and wondering why nothing improves.

How the race should look

The splits table above gives the even-pace reference every 5 km plus the half marathon mark. For a sub-2 attempt, even splits are almost always the right plan, and the reason is arithmetic: at this pace a fast first 5 km buys you two minutes and costs three.

Three practical points that decide this target:

• The first 5 km should feel too easy. If it feels like a race at 5 km, the last 5 km will be a walk.
• The 15–20 km section is the decision point. The splits above tell you where you should be; if you are behind there, the answer is to hold the pace, not to attack.
• Fuel and drink matter at this distance. Two hours is long enough that running out of energy is a real outcome rather than an excuse. Practising it in long runs is part of the training.

If you are consistently finishing in 2:05, look at the last 5 km rather than the first: a fade usually means the weekly volume is short, not that the target pace is wrong.

Training for it

The training table above gives the intensities; at this band the priorities are:

• Easy volume, more of it. Five runs a week of easy running will do more for a 2-hour half than three hard sessions. If you can only run three times, make one of them long.
• One threshold session a week — around the pace you could hold for an hour, in blocks of 10–20 minutes.
• Long runs of 90 minutes or more, ideally at a pace that lets you talk. The half marathon is 21 km; runs of 10 km do not prepare you for the last third of it.
• Optional goal-pace work: 20–30 minutes at 5:41/km inside a longer run, once every week or two. Useful for pace control, not the main lever.

Common questions

Target times and the pace they need

Next

• All target times for this distance
• Pace calculator
• VDOT calculator and training paces