3-minute reps
Use these for the shortest sub-threshold workout of the week. Keep them controlled and quick.
Norwegian Singles Approach / Method
The NSM training method organizes the week around three controlled sub-threshold workouts: long 10-minute reps, medium 6-minute reps, and short 3-minute reps. The goal is sustainable aerobic development, not maximal interval effort.
The calculator gives conservative targets for weeks you can repeat.
Use these for the shortest sub-threshold workout of the week. Keep them controlled and quick.
Use these as the middle session. They sit steadier than the 3-minute reps.
Use these for longer aerobic pressure. Finish the final rep with room left.
Easy runs stay easy enough that you recover for the next workout. If fatigue builds, slow them down first.
Run key sessions below threshold. Keep them near 20-25% of weekly volume.
Use paces you can repeat week after week. Finish with room left.
Recover around 60 seconds so the workout keeps moving.
Consistency over variety. Repeat a solid weekly structure and let your paces progress as your VDOT improves.
The calculator gives you the paces. These books explain how to apply them week after week.
Weekly structures, session progression and practical NSM guidance.
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The training ideas and physiology behind the Norwegian approach.
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The NSM training method organizes the week around three controlled sub-threshold workouts: long 10-minute reps, medium 6-minute reps, and short 3-minute reps. The goal is sustainable aerobic development, not maximal interval effort.
The original Norwegian Method uses two threshold sessions per day, one in the morning and one in the evening. Most runners cannot hold that volume. NSM keeps three pieces: sub-threshold intensity, short recoveries, and a stable week.
Every week follows the same repeatable structure: three sub-threshold workouts (Tuesday, Thursday, Saturday) plus easy runs on the other days. The sub-threshold sessions use three different interval lengths:
The calculator uses your current 5K or 10K race time to set workout targets. You run below lactate threshold and finish with room left.
NSM provides plans from 4.5 to 9 hours per week. As fitness grows, the plan adds reps and easy-run time. Move to the next tier after several comfortable weeks.
For runners targeting a marathon, this app generates a 15-week marathon build with progressive long runs, tune-up races, and marathon-pace specific sessions in the final weeks. Enter your marathon date and the app generates the entire countdown.
NSM works for many levels: from a 30-minute 5K to sub-15 athletes. The tables cover 5K times from 15:00 to 30:00. Use the same structure for a first 10K or a marathon PB.
Quick answers about NSA, NSM, and the calculator.
Yes. This app uses NSA for Norwegian Singles Approach and NSM for Norwegian Singles Method. Approach and Method are treated as the same training concept.
No. This is an independent, unofficial tool that helps runners estimate paces and organize Norwegian Singles training weeks.
You can enter a 5K, 10K, half marathon, marathon, or a custom race distance.
Yes. If you add a marathon date, the app generates a 15-week build with sub-threshold sessions, marathon-pace work, long runs, and tapering.
James Copeland is the author of Norwegian Singles Method. This independent calculator helps turn recent race fitness into practical paces and weekly structures compatible with NSM.
It is not an official Marius Bakken tool. It adapts Norwegian-style threshold principles into single-session weeks for recreational runners.
Select your race time to see the calculated sub-threshold training paces.