Enter Your Threshold Data
Per mile or per kilometer
How to Find Your LT Pace
1. Run a 30-minute time trial at maximum sustainable effort
2. Use average pace from minutes 10-30
3. Or use pace from recent 15K-10 mile race
Race Time Predictions
Enter your lactate threshold pace to see predicted race times
Test Your Actual Lactate Threshold
Eaglenos Blood Lactate Meter
Get precise lactate threshold pace data with professional-grade blood lactate testing. The Eaglenos meter allows you to perform lactate step tests at home to identify your exact threshold pace.
- ✓ Identify LT1 and LT2 thresholds precisely
- ✓ Track lactate curve improvements
- ✓ Optimize training zones scientifically
- ✓ Test during actual running workouts
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Gear for threshold training
Threshold pace is only useful if you can hold it. A GPS watch with live pace and heart rate alerts keeps threshold work in range.
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Training Pace Guide
Lactate Threshold & Race Pace
What is LT Pace?
The fastest pace you can sustain for 45-60 minutes with steady lactate levels. Corresponds to ~15K-half marathon race effort.
Why It Predicts Performance
LT pace reflects your metabolic efficiency and aerobic capacity. Faster race paces add anaerobic contribution, slower paces require more endurance. Our guide to using your lactate threshold pace in workouts covers the prescriptions.
Accuracy Factors
Experience level, training background, race distance specialization, and environmental conditions all affect prediction accuracy.
Typical Pace Relationships
Note: Relationships vary by individual. Elite runners have smaller gaps between paces than recreational runners.
Race Time Improvement Calculator
Improve LT Pace by 10 seconds:
How to Improve LT Pace:
- • 2×20 min threshold intervals weekly
- • 80% easy aerobic base training
- • Tempo runs (85-95% LT pace)
- • Consistent training over 8-12 weeks
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Wahoo ELEMNT BOLT 3
Pair with any ANT+ or Bluetooth HR monitor. Displays training zones in real time.
Find your heart rate zones, build an aerobic base with 8- and 12-week plans, and use pace and power tables to train easy and race faster. Inside: zone tables by age, max HR, heart rate reserve (Karvonen) and LTHR, field tests for max HR, LTHR and FTP, four ways to verify Zone 2 without trusting your watch, and complete base plans for running and for cycling.
Frequently Asked Questions
How accurate is lactate threshold pace for predicting race times?
LTHR pace predictions are 85-95% accurate for well-trained runners. Accuracy is highest for 10K-half marathon distances, which closely match threshold intensity. 5K and marathon predictions require adjustments for anaerobic and aerobic capacity.
What is the relationship between lactate threshold pace and race paces?
Lactate threshold pace typically corresponds to ~15K-half marathon race pace. 10K pace is 10-15 seconds faster per mile, 5K pace is 25-35 seconds faster, while marathon pace is 15-30 seconds slower per mile.
How do I find my lactate threshold pace?
Run a 30-minute time trial at maximum sustainable effort. Your average pace from minutes 10-30 is your lactate threshold pace. Alternatively, use the pace from a well-executed 15K or 10-mile race.