Athens, GR · September 2026
Spartathlon
Spartathlon pacing strategy with effort-based splits, nutrition timing, and course-specific risk notes for the 246 km ultra.
- Distance
- 246.00 km
- Elevation gain
- 2320 m
- Typical temp
- 15–30 °C
- Cutoff
- 36:00:00
The short version
A brutal course
- ▸Big climbing day — 2320 m up. Pace the ascents on effort, not the clock.
- ▸Low sun in your eyes around km 113–125 — bring a cap or shades.
- ▸Full overhead sun from km 42 — sunscreen and run the shaded side.
Next edition
25 September 2026
Typical race-day conditions
15–30 °C
Heat adds ~4% — your plan paces this in.
Course difficulty
BrutalDriven by 2320 m of climbing, typical race-day heat (~23 °C), 2207 m of quad-pounding descent. Harder than Maratón de la Ciudad de México (7.4), easier than Comrades Marathon (8.9) — tougher than 67% of the races we cover.
Race data quality
Medium confidence
Last verified: 24/05/2026
Distance and format are stable. Cutoff and segment data should be imported from official checkpoint files before positioning as high confidence.
Elevation profile
Verified profile
Paid strategy guardrail
Official race packet remains source of truth
Step 1 · Free preview
See the course-adjusted plan first
Enter one recent result. The preview returns course cost, first splits, and fuel target from the deterministic engine and the current course data model.
VDOT
49.1
Estimate
20:43:28
Course cost
+95:57
Fuel target
90 g/h
First 5 km preview
full race locked
- km 14:44
- km 24:48
- km 34:49
- km 44:58
- km 54:56
First race free · then €7 Race Pass · no monthly subscription
Uses an approximate course model; verify final logistics against the official race packet.
Step 2 · Your full Spartathlon plan
The preview shows the shape. The plan races it for you.
Course preview
Free
what you see now
- ✓Difficulty score & course data
- ✓Course-cost & toughest km
- ✓Your first full plan free, ever
Race Pass
€7
one-time, this race
- ✓Every km split, weather-adjusted
- ✓Nutrition & fluid timeline
- ✓Heat, wind & sun race tactics
- ✓Danger zones + watch file (GPX)
- ✓Race-week forecast & reminders
Annual
€19
per year, every race
- ✓Everything in Race Pass
- ✓Unlimited races, all year
- ✓Re-plan as your fitness changes
No subscription required — one race is a one-off €7. Cancel anytime on Annual.
Continue with approximate course data →Course elevation
2320 m total gain · 2207 m loss · max 1061 m, min -1 m.
Fly the course
At Athens to SpartaSun & shade
Sun in your eyes
31 km
Sun on your back
23 km
Side / overhead
71 km
Expect low sun roughly in your eyes around km 113–125 — pack a peaked cap or shades; low glare hides kerbs and potholes. From km 42 the sun sits high overhead — peak UV and radiant heat, so keep sunscreen on and run the shaded side of the road where you can.
Approximate — solar position from the route geometry and a 07:00:00 start (timezone estimated from longitude), for a mid-pack finishing time.
Signature sections
Athens to Sparta · km 0–246
Strict cutoffs and late-race climbing make time-buffer management central.
Aid stations
61 stations on course — plan your fueling around them.
Race overview
Spartathlon is a historic 246 km road ultra from Athens to Sparta with strict checkpoint cutoffs. A useful plan must manage early restraint, heat, night fueling, and time buffers rather than simply predicting a flat equivalent pace.
How hard is this course?
Reference table — how the Spartathlon compares to a flat sea-level course for four typical fitness levels. Computed from the route profile, mean course altitude, and typical race-week climate (23 °C / 60 % humidity). Your personal strategy uses your VDOT, per-km splits, nutrition timing, and the typical climate baseline for this static sample; paid strategies use Open-Meteo when a verified race date is inside the forecast window.
| Runner | Flat-course finish | Spartathlon finish | Course cost | Adjusted pace |
|---|---|---|---|---|
| Beginner (VDOT 35) | 25:03:43 | 27:09:26 | +8.4% | 6:21/km |
| Intermediate (VDOT 45) | 20:30:19 | 22:13:12 | +8.4% | 5:12/km |
| Trained (VDOT 50) | 18:50:09 | 20:24:38 | +8.4% | 4:46/km |
| Competitive (VDOT 60) | 16:15:06 | 17:36:38 | +8.4% | 4:07/km |
Reference nutrition
For a 70 kg runner finishing in 20:24:38 at 23 °C. Adjust to your weight and tolerance — these are ISSN-window targets, not prescriptions.
- Carbs / hour
- 90 g
- Total carbs
- 1837 g
- Fluid / hour
- 765 ml
- Sodium / hour
- 590 mg
FAQ
How should I pace Spartathlon?
Treat the preview as an effort plan, not a fixed road-marathon pace table. The course model includes 3300 m of climbing, so climbs, descents, heat, and aid-station timing matter more than average pace.
How reliable is the current course data?
Distance and format are stable. Cutoff and segment data should be imported from official checkpoint files before positioning as high confidence.
Get your personalized strategy
The numbers above are samples. Sign up free and get the full Spartathlon strategy from your VDOT, the current course model, Open-Meteo race-week forecast when available, and your nutrition preferences.
First race free · €7 per additional race · €19/yr for unlimited
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New to trail and ultra pacing? Start with our trail and ultra pacing guide or run the VDOT calculator.