For The RepsBlog

Running

Negative-Split Race Plan

Sharpening plan that drills negative-split execution for 5K to half. Ten weeks, five runs a week.

Runner moving through the field late in a road race
Runner moving through the field late in a road race. AI-generated image.
Distance
10K
Length
10 weeks
Runs per week
5
Level
Intermediate
Goal
Time goal

Who it's for

You already run a few times a week. It is built around a specific 10K time you want to hit.

How the weeks work

It runs for ten weeks with five runs in each.

If life gets in the way you can stretch it to 12 weeks, or tighten it to 8 if you are already fit.

The last 10 days are a taper: less running, a little intensity, so you start the race fresh.

  • Blocks at your goal race pace, so it feels familiar when it counts.
  • Threshold runs of 15 to 30 minutes at a comfortably hard pace. You could say a few words, not hold a conversation.
  • Intervals: repeats a little faster than race pace, with easy jogging in between.

Setting your paces

Start with a 5K time trial. Your result sets the paces for the rest of the plan, so run it honestly and on fresh legs.

Later benchmarks: a 10K time trial. Use them to adjust your paces rather than to chase a number.

Making it stick

  • Keep easy days slow. Most plateaus come from running them too fast.
  • Put an easy day or a rest day after every hard session.
  • If you miss a week, pick up where you left off instead of cramming the sessions in.