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Seb | dnf ultra marathon coach


Stop guessing. Train with a plan. Finish what you start with an expert ultra marathon coach.

From GB triathlete to 145-mile trail winner, Seb blends a Strength & Conditioning degree with lived grit to build runners who are fast, durable, and hard to break.

Seb — Strength, Speed & Ultras

From hospital bed to GB triathlete to 145-mile trail winner — Seb’s walked the long road himself. He rebuilt after ACL surgery, qualified to represent Great Britain at the European Championships (Bilbao), ran sub-3 marathons, and pushed deep into ultra territory (33–145 miles), winning the Hope 36 Ultra and setting a new course record by 10 miles.

He backs lived experience with a degree in Strength & Conditioning, so his athletes get both endurance savvy and smart, injury-resistant training.

Coaching philosophy

Simple: strong runners last longer. As an ultra marathon coach, Seb blends intelligent S&C with periodised run training so you can handle the workload, stay healthy, and peak when it matters. He’ll meet you where you are, build the engine, and harden the chassis.

Who Seb is great for

  • Road or trail runners stepping up to their first ultra (50K–100M)
  • Marathoners chasing a sub-3 / new PB without breaking down
  • Ultra runners who keep getting niggles and need a stronger base
  • Busy people who want no-fluff, high-impact plans that fit real life

Highlights

  • GB Age-Group Triathlete — European Championships (Bilbao)
  • Sub-3 marathon & multiple ultra finishes (33–145 miles)
  • Winner & course record: Hope 36 Ultra (145 miles, hilly trail)
  • BSc Strength & Conditioning — performance + resilience focused

What you get each month

Personalised 4-week plan built in TrainingPeaks (structured workouts, targets, comments) - Worth £120

Weekly check-in + adjustments (voice/text): we fix the week you actually had - Worth £50

Race fuelling & electrolytes plan (g/hr + mg/hr targets that fit - Worth £50

Course strategy (pacing by terrain, aid-station timing, drop-bag plan) - Worth £80

Race-week protocol (taper, carb-load, sleep, nerves) - Worth £60

Accountability nudges when the wheels wobble - Worth £50 to Priceless

Early access to DNF tools, challenges, and partner discounts - Worth £50

Total Value: ~ £460

Pricing: £99/month — limited time offer.

Once they’re gone, new spots will revert to full pricing - £129.99

The DNF Method

what actually moves the needle

Mind: anti-DNF tactics, “quit scripts,” pressure-proof pacing.

Miles: time-on-feet, back-to-backs, terrain-matched vert.

Fuel: carbs + electrolytes per hour, gut training, simple rules.

Course-specific: night running, heat/cold, technical skills.

Dress rehearsals: test kit, shoes, fuelling, drop-bag flow.

Who this is for

First 50K/100K/100M, or coming back from a DNF.

Busy life, limited time — want clarity and accountability.

Ready to do the boring work that gets you across the line.

Who this isn’t for

Looking for magic hacks, not habits.

Won’t track sessions or communicate honestly.

Want “fun” over finishing.

Who this is for

First 50K/100K/100M, or coming back from a DNF.

Busy life, limited time — want clarity and accountability.

Ready to do the boring work that gets you across the line.

Who this isn’t for

Looking for magic hacks, not habits.

Won’t track sessions or communicate honestly.

Want “fun” over finishing.

How it works (simple + selective)

Apply: Complete form below.

Fit Call (20–30 min): we map goals, risks, and non-negotiables. If it’s not a fit, I’ll say so.

Baseline & Build: TrainingPeaks set-up, zones dialled, first 4-week block inside 48 hours.

Execute + Adjust: weekly check-ins, live tweaks, no ego.

Dress Rehearsal: full kit + fuelling test under fatigue.

Race-Week War Room: pacing plan, aid-station timing, mental scripts.

Debrief: lessons, recovery plan, next target.


Straight-up promise

You’ll always know what to do, why you’re doing it, and how it gets you to the finish. No fluff. No guesswork.


Guarantee – “Worth It”: Do the first 4 weeks (hit 80% of sessions).


If you feel it wasn’t worth £99, I’ll credit your next month. Zero drama.

Free UK shipping

When you spend £40

Give us a call

+44777 553 0160

Chat with us

We offer running chat support

RUN WITH US

Join us for a run!