5K Speed to 10K Strength
Workout - 5K Speed to 10K Strength
- 10min @ 6'00''/km
- 2 lots of:
- 1.0km @ 4'00''/km
- 2min 30s rest
- 5 lots of:
- 1.0km @ 4'30''/km
- 1min 30s rest
- 8min @ 6'00''/km
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Thinking about moving up from 5K racing to the 10K without losing the speed you’ve built? Elite runner Lee Grantham’s recent video lays out a straightforward approach to the transition. Here’s his method unpacked, with a sample workout you can run this week.
Key Points:
- Most runners stumble by doubling their weekly volume all at once. Grantham’s answer: add to your interval work at a measured pace week by week. This methodical approach shapes the training philosophy covered in Mastering Interval Training: Science-Backed Workouts and How a Smart App Can Personalize Them.
- Your long run distance can stay roughly where it is. The payoff comes from doing more 5K-style repeats at your new 10K pace.
- To absorb the extra distance without burning out, dial back your 10K-pace repeats at first—something in the 3:06–3:10 min/km range works well. This pacing strategy and much more sits in our full 10K training guide at Mastering the 10K: Proven Training Plans, Pace Strategies, and How a Smart App Can Elevate Your Performance.
- Steady week-to-week progress beats the occasional big-volume shock.
Workout Example:
- Base 5K session: Start with something you know—say, 6 × 1 km at your current 5K pace (3:00 min/km is a good example). This is reliable territory if you’ve been focused on Mastering 5K Speed: Proven Interval Strategies to Cut Minutes off Your Time.
- First transition: Extend your interval total to 6.5 km (for instance, 6 × 1 km plus 1 × 0.5 km), keeping the same 5K pace.
- Gradual progression: Each week, tack on another 0.5 km of intervals until you hit 8 km total (such as 8 × 1 km). As the volume climbs, you can either hold your 5K pace or shift down toward your 10K target (around 3:06–3:10 min/km) to deepen your aerobic fitness.
- Speed element: To keep your finishing speed intact, mix in a few quicker repeats at 5K pace (like 2 × 1 km at 2:50 min/km) during the session. Most of the work stays at 10K pace, but these faster efforts maintain your leg snap.
Closing Note:
Give this progression a shot over the coming weeks. Adjust your paces to match where you actually are now—they should fit your current fitness level, not someone else’s. Tweak your own distances and speeds in the Pacing app to suit your goals. Get after it.