Annecy, FR · April 2027
Marathon du Lac d’Annecy
- Distance
- 42.20 km
- Elevation gain
- 126 m
- Typical temp
- 5–15 °C
- Cutoff
- 7:00:00
The short version
A fair test with a few teeth
- Most runners crack near km 32 — fuel before km 30, not at it.
- Full overhead sun from km 7 — sunscreen and run the shaded side.
Next edition
April 2027
Typical race-day conditions
5–15 °C
We lock the real forecast into your plan in race week.
Course difficulty
ModerateDriven by a flat, fast course with mild conditions. Harder than Maratón Internacional de Buenos Aires (4.9), easier than Prague International Marathon (4.9) — tougher than 41% of the races we cover.
Race data quality
Low confidence
Auto-generated from GPS route + elevation data
Course route imported from a community GPX; race date, start time and climate are NOT set and fall back to generic defaults until verified.
Elevation profile
Route-derived (GPX + DEM)
Paid strategy guardrail
Official race packet remains source of truth
- distanzrunning/gpx (community course route)
- Race month per official race calendar
- Open-Meteo historical climate archive (2022–2024)
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
3:15:01
Course cost
+1:17
Fuel target
60 g/h
60 g/h needs a trained gut — practise it in training, never try new fuelling on race day. Your full plan tunes this to your experience.
First 5 km preview
full race locked
- km 14:46
- km 24:49
- km 34:36
- km 44:59
- km 54:41
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 Marathon du Lac d’Annecy 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. See a full sample plan →
Continue with approximate course data →Course elevation
126 m total gain · 125 m loss · max 553 m, min 441 m.
Fly the course
Sun & shade
Sun in your eyes
17 km
Sun on your back
14 km
Side / overhead
11 km
From km 7 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 09:00 start (timezone estimated from longitude), for a mid-pack finishing time.
Race overview
How hard is this course?
Reference table — how the Marathon du Lac d’Annecy 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 (10 °C / 76 % 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 | Marathon du Lac d’Annecy finish | Course cost | Adjusted pace |
|---|---|---|---|---|
| Beginner (VDOT 35) | 4:16:08 | 4:17:50 | +0.7% | 6:05/km |
| Intermediate (VDOT 45) | 3:28:17 | 3:29:40 | +0.7% | 4:57/km |
| Trained (VDOT 50) | 3:10:41 | 3:11:57 | +0.7% | 4:31/km |
| Competitive (VDOT 60) | 2:43:24 | 2:44:29 | +0.7% | 3:53/km |
Reference nutrition
For a 70 kg runner finishing in 3:11:57 at 10 °C. Adjust to your weight and tolerance — these are ISSN-window targets, not prescriptions.
- Carbs / hour
- 60 g
- Total carbs
- 192 g
- Fluid / hour
- 640 ml
- Sodium / hour
- 500 mg
FAQ
Get your personalized strategy
The numbers above are samples. Sign up free and get the full Marathon du Lac d’Annecy 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
Get my Marathon du Lac d’Annecy strategyRelated races
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New to the marathon? Start with our marathon pacing strategy guide or run the VDOT calculator.