Master the IRONMAN Nice 2025 Course: GPX Map, Strategy & Pro Insights
IRONMAN Nice 2025 Course Guide — GPX, Tips & Strategy
If you’ve searched for “Ironman Nice 2025 course,” “Ironman Nice GPX download,” or “how to save watts on the Riviera,” this is the definitive guide you need.
The 2025 IRONMAN World Championship returns to Nice, France: 3.8 km swim · 180 km bike · 42.2 km marathon. Nice is breathtaking… and unforgiving. Knowing the course before race day can be the difference between finishing strong or breaking down.
1. Ironman Nice 2025 Bike Course GPX Download
Download GPX ▸ IRONMAN Nice Bike Course
- Bike distance: 180 km
- Total elevation gain: 2,400 m
- Key segments: Col d’Eze · Col de Vence · St-Jeannet descent · Final flat section along the Promenade des Anglais
Garmin/Wahoo tip: Menu › Workouts › Courses › Import GPX.
2. Ironman Nice Swim Course — Bay of Angels (3.8 km)
| Data | 2025 Value |
|---|---|
| Water temperature | 22 – 24 °C |
| Format | 2 laps of 1,900 m |
| Current | West→East 0.05 m/s |
| Waves | > 20 km/h → chop 0.3 – 0.5 m |
Swim start strategy
- Line up 20 m to the right of the start arch to avoid congestion.
- Swim the first 300 m at ~85% effort and settle into your stroke rhythm.
- Key sighting points: Old Port tower (buoy 1) and Hotel Negresco (buoy 3).
Swim checklist
- □ Mirrored goggles for glare
- □ Long-sleeve wetsuit
- □ 30 g carbohydrate gel 10 min before the start
3. Ironman Nice Bike Course — Segment-by-Segment Analysis
- km 0-20 — coastal flat · 180-200 W
- km 20-40 — Col d’Eze · 11 km @ 5% · Lower stack by 5 mm → save 3-4 W
- km 60-100 — Col de Vence · 6% · 25 mm tires at 90 psi
- km 120-160 — St-Jeannet · Gusts 20-25 km/h · Rotate wrist 5° for stability
- km 160-180 — Promenade des Anglais · Cadence 90-95 rpm · -10 W below threshold
Recommended bike pacing
| Finish goal | Climb | Flat | Descent |
|---|---|---|---|
| Sub-10 h | 290-300 W | 240 W | Free watts |
| 10-11 h | 250-260 W | 210 W | Hydration focus |
| 11-12 h | 220-230 W | 190 W | Controlled effort |
4. Ironman Nice Marathon — Promenade des Anglais
4 laps, aid stations every 2 km. Keep cadence at 180 spm, take 30 g gel every 25 min, use cold water sponge every 5 km to manage heat.
5. Ironman Nice Special Needs Bag (Bike)
| Item | Purpose |
|---|---|
| 750 ml bottle with 90 g carbs | Extra fuel at km 110 |
| Dry socks | Prevent blisters |
| Backup goggles | In case of loss during T2 |
| 1 g sodium | Electrolyte support in heat |
| Microfiber towel | Dry feet before marathon |
6. Quick Race-Day Checklist
- □ Tire pressure 90-95 psi
- □ Gel 20 min before Col de Vence
- □ Memorize sharp turn at km 92
- □ Shift to small cog before Col d’Eze
7. Ironman Nice 2025 — FAQ
Where can I download the Ironman Nice GPX?
From the download button above; compatible with Garmin and Wahoo devices.
Can I train on the Ironman Nice course virtually?
Yes, import the GPX file into platforms like Zwift or Rouvy for a realistic simulation.
How many watts can I realistically save?
Up to 30 W with an optimized aero position combined with the Masamune cockpit setup.
8. Downloadable “Race-Day Côte d’Azur” Checklist
Get the complete race-day gear, nutrition, and schedule sheet. Free download here.
See you on September 14 to conquer the Riviera. #RedefineYourLimits
