77 FOUNDING SPOTS REMAINING

Your training is only half
the picture.

Blood-based performance intelligence for endurance athletes. Personalised ranges. Evidence-based protocols. Know exactly what is limiting your race.

Analyse My Blood Markers →See how it works

Free to start · No credit card required · Results in 90 seconds

8 min
Average time lost on race day to undetected deficiencies
35%
Of female endurance athletes have suboptimal ferritin
8 wks
To move ferritin — the sooner you test, the more time you have
HOW IT WORKS

From blood test to race protocol
in four steps

01
Build your athlete profile
Age, sex, weekly training distance, sport, and race date. PaceLab uses this to calibrate every reference range to you — not generic population averages.
02
Get your blood test
Use our personalised test list and GP request script, or book directly with Medichecks or Thriva from £49. Results in 24-72 hours.
03
Enter your results
PaceLab analyses all 8 markers against athlete-specific ranges and calculates your Race Readiness Score — a single number from 0-100.
04
Execute your protocol
Targeted 6-week protocols for every out-of-range marker. Supplement dosing, food sources, training adjustments, and retest timing.
THE 8 MARKERS

Every marker linked to
race performance

Not a general health panel. Every marker was selected for its direct impact on endurance performance.

🫁
Oxygen Efficiency
Ferritin · ug/L
Up to 15% VO2 max reduction when low
ALL MARKERS
THE EVIDENCE

The numbers behind the science

0%
VO2 max reduction from ferritin under 30 ug/L
0%
Female endurance athletes with suboptimal ferritin
0x
Higher stress fracture risk with vitamin D deficiency
0%
Less training adaptation when CRP exceeds 2 mg/L
ATHLETE STORIES

The gap between training hard
and training smart

Ferritin: 14 ug/L

"Eight minutes off my PB. Ferritin was 14. Three months of iron protocol later, I ran an 11-minute PB. I had no idea."

T
Tom, 38
Marathon
Vitamin D: 28 nmol/L

"Two stress fractures in 18 months. Vitamin D was 28. Once I got it to 95, I have not had a single injury in two years."

S
Sarah, 31
Triathlon
Testosterone: 7.2 nmol/L

"Trained 80km a week for six months and got slower. Testosterone was 7.2. Reduced load and dropped 40 minutes off my ultra time."

M
Marcus, 44
Ultra Running
PRICING

Start free. Upgrade when
you see your results.

First 23 founding members get locked-in rates — forever.

FREE
£0
forever
✓Race Readiness Score
✓All 8 blood markers
✓Waiting room tools
✓GP request script
✓Daily training log
Get Started Free
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FOUNDING PRO
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/month
or £49/year — save 18%
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✓Everything in Free
✓6-week targeted protocols
✓Athlete benchmarking
✓Trajectory projections
✓Protocol commitment tracking
✓Founding Member badge
✓Priority support
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PRO
£9.99
/month
or £99.99/year — save 17%
✓Everything in Free
✓6-week targeted protocols
✓Athlete benchmarking
✓Trajectory projections
✓Protocol commitment tracking
✓Priority support
Start Free Trial
FAQ

Common questions

GET STARTED

Stop guessing.
Start knowing.

The average athlete loses 8 minutes on race day to undetected deficiencies. You now know that. The question is what you do about it.

Analyse My Blood Markers →

Free to start · No card required · 77 founding spots remaining