How to negative split your 400m and 800m
7 min read
Written by DuoSwim Team • 6 Feb 2026

Quick answer
Pacing models and set examples to finish stronger while staying controlled.
7 min read
Written by DuoSwim Team • 6 Feb 2026

Quick answer
Pacing models and set examples to finish stronger while staying controlled.
Every strong performance starts with clear structure. This article highlights practical decisions that help swimmers improve week to week.
Use these insights to choose better workout intent, control effort more effectively, and stay consistent through each training block.
If you apply these points consistently, progress becomes much more predictable.
Pick one idea from this article and apply it in your next two workouts. Small execution upgrades compound quickly over a full plan.
Continue improving
Apply one change at a time, keep the workout conditions comparable, and review several sessions before changing direction.
DuoSwim Team
Ready To Improve
Follow a plan built for your goal, execute workouts on your watch, and keep progressing every week.
Caroline
Started the Marathon Plan
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