Tour du Mont Blanc (TMB)
eSIM plans checked against measured mobile signal along the route — see the exact coverage map before you buy.
Duration
20 GBValid for 30 days
Best Value$22.58$1.13/GB
Estimated route coverage79%
France
SFR 5G
Italy
Vodafone 5G · Wind 5G · Iliad 5G
Switzerland
Sunrise 5G · Salt 5G
+ 30 more countries covered
Included with every order
- Secure checkout by Stripe
- eSIM QR code and coverage report by email within minutes
- Plan days start on first use, not at purchase
- 14-day self-service refund before installation
Other 30-day plans
1 GBValid for 30 days
$3.00$3.00/GB
Estimated route coverage89%
France
SFR 5G · Bouygues 5G · Free Mobile 5G · Orange 5G
Italy
Vodafone 5G · Wind 5G
Switzerland
Sunrise 5G · Salt 5G · Swisscom 5G
+ 31 more countries covered
3 GBValid for 30 days
$3.60$1.20/GB
Estimated route coverage79%
France
SFR 5G
Italy
Vodafone 5G · Wind 5G · Iliad 5G
Switzerland
Sunrise 5G · Salt 5G
+ 30 more countries covered
5 GBValid for 30 days
$5.64$1.13/GB
Estimated route coverage79%
France
SFR 5G
Italy
Vodafone 5G · Wind 5G · Iliad 5G
Switzerland
Sunrise 5G · Salt 5G
+ 30 more countries covered
3 GBValid for 30 days
$7.60$2.53/GB
Estimated route coverage89%
France
SFR 5G · Bouygues 5G · Free Mobile 5G · Orange 5G
Italy
Vodafone 5G · Wind 5G
Switzerland
Sunrise 5G · Salt 5G · Swisscom 5G
+ 31 more countries covered
5 GBValid for 30 days
$11.40$2.28/GB
Estimated route coverage89%
France
SFR 5G · Bouygues 5G · Free Mobile 5G · Orange 5G
Italy
Vodafone 5G · Wind 5G
Switzerland
Sunrise 5G · Salt 5G · Swisscom 5G
+ 31 more countries covered
10 GBValid for 30 days
$11.72$1.17/GB
Estimated route coverage79%
France
SFR 5G
Italy
Vodafone 5G · Wind 5G · Iliad 5G
Switzerland
Sunrise 5G · Salt 5G
+ 30 more countries covered
10 GBValid for 30 days
$19.80$1.98/GB
Estimated route coverage89%
France
SFR 5G · Bouygues 5G · Free Mobile 5G · Orange 5G
Italy
Vodafone 5G · Wind 5G
Switzerland
Sunrise 5G · Salt 5G · Swisscom 5G
+ 31 more countries covered
20 GBValid for 30 days
$33.60$1.68/GB
Estimated route coverage89%
France
SFR 5G · Bouygues 5G · Free Mobile 5G · Orange 5G
Italy
Vodafone 5G · Wind 5G
Switzerland
Sunrise 5G · Salt 5G · Swisscom 5G
+ 31 more countries covered
50 GBValid for 30 days
$68.00$1.36/GB
Estimated route coverage89%
France
SFR 5G · Bouygues 5G · Free Mobile 5G · Orange 5G
Italy
Vodafone 5G · Wind 5G
Switzerland
Sunrise 5G · Salt 5G · Swisscom 5G
+ 31 more countries covered
Coverage map
Segment-by-segment
| Stage | km | 4G/5G | 2G/3G | No signal | Best network |
|---|---|---|---|---|---|
| Chamonix-Mont-Blanc, Auvergne-Rhône-Alpes → Saint-Gervais-les-Bains, Auvergne-Rhône-Alpes | 0–25 | 100% | 0% | 0% | SFR |
| Saint-Gervais-les-Bains, Auvergne-Rhône-Alpes → Bourg-Saint-Maurice, Auvergne-Rhône-Alpes | 25–50 | 42% | 48% | 10% | SFR |
| Bourg-Saint-Maurice, Auvergne-Rhône-Alpes → Courmayeur, Valle d'Aosta / Vallée d'Aoste | 50–75 | 2% | 52% | 46% | SFR |
| Courmayeur, Valle d'Aosta / Vallée d'Aoste → Courmayeur, Valle d'Aosta / Vallée d'Aoste | 75–100 | 80% | 12% | 8% | Vodafone |
| Courmayeur, Valle d'Aosta / Vallée d'Aoste → Orsières, Valais/Wallis | 100–125 | 0% | 36% | 64% | Vodafone |
| Orsières, Valais/Wallis → Trient, Valais/Wallis | 125–150 | 10% | 80% | 10% | Sunrise |
| Trient, Valais/Wallis → Chamonix-Mont-Blanc, Auvergne-Rhône-Alpes | 150–166 | 13% | 87% | 0% | SFR |
Dead zones — download offline maps before these
| # | Near | Section | Length | Coords |
|---|---|---|---|---|
| 1 | Les Contamines-Montjoie, Auvergne-Rhône-Alpes | 44–47 km | 3 km | 45.74143, 6.71398 |
| 2 | Bourg-Saint-Maurice, Auvergne-Rhône-Alpes | 57–64 km | 7 km | 45.73577, 6.77927 |
| 3 | Courmayeur, Valle d'Aosta / Vallée d'Aoste | 64–69 km | 5 km | 45.75955, 6.83138 |
| 4 | Courmayeur, Valle d'Aosta / Vallée d'Aoste | 98–108 km | 10 km | 45.88150, 7.06427 |
| 5 | Orsières, Valais/Wallis | 114–122 km | 9 km | 45.95138, 7.10198 |
| 6 | Trient, Valais/Wallis | 145–147 km | 3 km | 46.05389, 6.99731 |
How this is estimated. Coverage is modelled from OpenCellID crowd-sourced cell-tower locations. A point counts as covered by an operator if it falls within a conservative per-technology range of one of that operator's towers (5G 3 km / 4G 6 km / 3G 5 km / 2G 12 km). This flags stretches where you're likely to lose signal, but it is an estimate from public data—not a field measurement or guarantee. Real signal varies with terrain, weather and network load.
Coverage: OpenCellID (CC-BY-SA 4.0), data snapshot 2026-08-01. Route: © OpenStreetMap contributors (ODbL). Place names © OpenStreetMap contributors (ODbL). © 2026 TrailSim.
Frequently asked questions
How much data do I need for Tour du Mont Blanc (TMB)?
Aim for at least 500 MB a day — comfortable headroom for daily navigation, booking accommodation, messaging home and uploading photos. The featured plan is picked on exactly that rule; size up if you stream, video-call or share your connection.
When do the plan days start counting?
On first use — installing the eSIM and connecting starts the clock, not the purchase date. You can safely buy weeks before your trip.
Does my phone support eSIM?
Most phones released since 2019 support eSIM, including iPhone XS and later, Google Pixel 3 and later, and most recent Samsung Galaxy models. Your phone must also be carrier-unlocked.
What if I change my mind after buying?
Uninstalled eSIMs qualify for a full self-service refund within 14 days of purchase — no questions asked. Once the eSIM is installed on a device it can no longer be returned. See the refund policy.