Sun Trip Alps 2022: the movie!

This film immerses us in the adventure of the Sun Trip Alpes 2022, a rally of solar bikes which embarked 40 participants in France, Switzerland, Austria, Slovenia and Italy. Over the 3 weeks of travel, we discover the beauty of the alpine landscapes, the friendly atmosphere between participants, the challenges between climbers. This event demonstrates the effectiveness of solar mobility for covering long distances with steep gradients.
Film directed by Isaya Chaillou – Zeppelin Agency
© TheSunTrip

Views: 249

Sun Trip Europe 2021: the movie!

This fresco traces the adventure of the Sun Trip 2021 which took on board 35 participants all around Europe. This gentle mobility allowed them, each at their own pace, to discover this territory in all the diversity of its cultures and landscapes. This film also reflects the diversity of the participants, their motivations and their adventure.
Film directed by Sophie Planque and Jérémy Vaugeois.

english subtitles

Views: 337

Energy balance of Sun Trip Europe by solar bike

In this report, I take into account the Sun Trip but also my journey to reach Brussels and the return from Lyon to my home. I excluded the days when I did not cycle: 3 days in Brussels for presentations to schools and partner institutions and 2 days of immobility for breakdown and other.

– 57 days of cycling
– 14 countries crossed, 18 borders
– distance of travel: 8,600 km
– positive elevation: 50,000 m

– total solar production: 91,000 Wh
– energy produced by regeneration: 4,000 Wh
– motor + devices consumption: 95,000 Wh

– average solar production: 1,590 Wh/d
– energy produced by regeneration: 65 Wh/d on average
– average consumption: 1,655 Wh/d

This summer, the sunshine conditions were extremely variable:
– mini solar production: 200 Wh in one day
– maximum solar production: 3,000 Wh in one day
The distances traveled were influenced by these weather conditions, the traffic conditions (roads with heavy traffic), the type of road surface (deteriorated asphalt, unpaved surfaces: cobblestones, sand, gravel, etc.). The wind was not often frontal, sometimes lateral, therefore destabilizing for the 2 wheels with solar roofs.

Solar consumption and production graph

Table of the route, distance, elevation, consumption and solar production

Views: 396

The itinerary of my Sun Trip Europe

In the end, I mostly followed the route I had traced back home, with maps and apps. As expected, I went through the city of Magdeburg in Germany, through the primary forest of Białowieża in Poland, through the city of Cluj Napoca in Romania, twinned with Dijon.

Voir en plein écran

But obviously many unforeseen events have affected my course:
– in Germany, I finally crossed Berlin to find Patrice and Jean-Louis, two other suntripeurs,
– in Lithuania, I preferred to follow the GPS track given by Bernard, to avoid improbable roads and dirt roads,
– back from Riga, Lithuania, I took a detour via Vilnius to visit a little cousin married to a Finnish woman;
– in Poland, around Lublin, I turned east all morning to follow those who had opted for Ukraine, then at midday, I changed my mind, I decided to come back to my first choice, I headed for Slovakia,
– in Romania, arrived in Cluj-Napoca, I diverted to Alba Iulia to respond to the invitation of Sophie Planque and Jérémy Vaugeois, and thus find other participants with I then traveled,
– in Romania, to arrive in Constanta, we opted for a very pleasant route, without any traffic, which we also took on the return,
– we came back via Bulgaria rather than Romania, for the pleasure of discovering a new country,
– in Serbia, we have carefully avoided the traffic of the capital Belgrade,
– in Croatia, we have long walked along the border with Hungary without ever crossing it, to avoid time-consuming health checks,
– in Slovenia, we have consciously changed the planned route to enjoy the Slovenian landscapes, visit the capital Ljubljana and meet great people there,
– after Slovenia, we thought to cross Austria, but in the end we preferred to go to Italy to visit our friend Daniele,
– in Italy, we decided to end our trip in Lyon, without going through Spain and Portugal, the weather and unforeseen events having slowed our progress too much.

Views: 378

Bruxelles- Riga : 14 days

Hello to all Internet users who follow this blog!
Since leaving Brussels, it has been impossible for me to publish articles on this blog every day. Fatigue at the end of the day, the ups and downs of the trip, the drowning of my computer made it all impossible.
On the other hand, I publish several posts per day on Facebook (fast)
@Stef Xuo
and the best images on Instagram solar adventures
I invite you to find me on these social networks!

Views: 359

My planned itinerary for the Sun Trip Europe

This is a route I mapped out at home, with maps and apps. Apart from the compulsory checkpoints, we have complete freedom to choose the route. So I chose to go through a few specific places:
– in Germany, the city of Magdeburg, to see The Green Citadel created in 2005 by Hundertwasser, brilliant Austrian architect and environmentalist,
– in Poland, the forest of Białowieża, which is the last primary lowland forest in Europe, a forest unexploited by man for centuries,
– in Romania, the city of Cluj Napoca, which is twinned with Dijon where I live,
– as well as Pécs in Hungary,
– and Guimarães in Portugal.

Voir en plein écran

But of course, lots of unforeseen events await us: meeting people who warmly recommend a place, a city, the desire to take the road for a while with other solar cyclists, breakdowns perhaps …
This map is therefore a landmark today, but it is impossible to know which course will be mine in the end.

Views: 382

Follow the participants of the Sun Trip 2021 on their social network!

48 solar cyclists of 10 different nationalities are registered for Sun Trip Europe, which departure is scheduled for June 15 in Brussels.

Hopefully the health context will be favorable and allow everyone to participate!

Below, find each participant on their social network or blog: discover their preparation, their expectations, their enthusiasms before the big departure …
Notice to participants: for any addition or correction, contact:

1Dirk Huygue

Belgiquelogo facebook
2Kris WuytsBelgiquelogo facebook
3Géry Gevers

Belgiquelogo facebook
4Baudouin de HemptinneBelgiquelogo facebook
5Raf Van HulleBelgiquelogo facebooklogo instagram
6Bernard CauquilFrancelogo facebooklogo instagram
7Alessandra Sorrentino

Suisselogo facebooklogo instagram
8Pirmin BütlerSuisselogo facebooklogo instagram
9Patrice Plozner

Francelogo facebooklogo instagram
10Marisol SoutoFrancelogo facebooklogo instagram
11Sibylle Felder

Suisselogo facebook
12Daniel JenniSuisselogo facebook
13Nina WollnerNorvège½logo instagram
14Frédéric KochFrancelogo facebooklogo instagram
15Stéphane BujadouxFrancelogo facebooklogo instagram
16Didier VanderhoveBelgique½logo facebook
17Arnaud NegrierFrancelogo facebook
18Herman SegersBelgiquelogo facebook
19Jean-Marc DuboulozFrancelogo facebooklogo instagram
20Jean-Louis MachadoFrancelogo facebooklogo instagram
21Ralf LewienAllemagnelogo facebook
22Arnaud RoullandFrancelogo facebook
23Sofia Zaki
24Nicolas DelauneyFrance
25Michel BertetFrance
26Gaël BornetSuisselogo facebook
27Philippe PassardFrance
28Patrick TschiggAutriche½logo facebook
29Jacques CharpinetBelgiquelogo facebook
30Patrick AbramsBelgiquelogo facebook
31Laurence Surugue
32Christian SurugueFrance
33Baptiste Costes
34Samuel Certain-ChambaultFrance½logo facebook
35Valérie Nerincx
36Bertrand NerincxBelgique½
37Robert LucasFrancelogo facebook
38Frédéric VerronsFrance
39John MooneyRoyaume-Unilogo facebook
40Axel JustAllemagne
41Jean-Marc QuéauFrancelogo facebook
42Ivan ChicoisFrance
43Nicolas HenrysNouvelle-Zélande
44Akmaral MazhitovaKazakhstanlogo facebook
45Emil BarbutRoyaume-Unilogo facebook
46Patrick Noël

47Fakroudine AkbaralyFrance
48Sebastian MeyerFrancelogo instagram

Views: 498

Prologue to the Sun Trip: from the Jura to the Vosges

Leaving Lyon on June 1, the participants in the Sun Trip prologue continue their journey. They went from the Jura mountains to the Vosges mountains, with unfavorable weather: the brave had to pedal in the rain, sometimes the storm, they climbed the Ballon d’Alsace under the clouds! Find them in this video by Sophie Planque and Jérémy Vaugeois.

Views: 534

Lyon: start of the Sun Trip Europe prologue

This morning, in Lyon, the start of the Sun Trip Europe prologue was given at the Town Hall, in the presence of the mayor Grégory Doucet, elected officials of the city and the Metropolis, Ferran Tarradellas Espuny, representative in France of the European Commission.

The speeches present the exemplary values ​​carried by the Sun Trip: the search for sustainable mobility to meet climate challenges, a challenge that we must face together within Europe. Mr. Ferran Tarradellas Espuny recalls the motto of Europe: “united in diversity”, this diversity that we will discover and taste throughout our journey.

This motto also reflects the spirit of the Sun Trip, with its values ​​of inclusiveness: a group of people with disabilities participate in the prologue with adapted solar bikes, the Benur , designed by a Lyon company.

Views: 415

Video presentation of the Sun Trip Europe!

The organization of the Sun Trip has published the trailer for the event, with the 5 compulsory passage points for all solar bikes.
The rest of the itinerary is at the discretion of the participants. Some plan a fairly direct route, others announce detours through Sweden. Further on, participants will be tempted to cut through Belarus and Ukraine, while most will cross Slovakia and Hungary to join Romania.

But the evolution of the health situation in each country could shake up the projects …

Views: 309

A solar bike for people with reduced mobility!

The Benur bicycle meets the travel needs of people with reduced mobility. Its ramp at the rear allows independent access with a wheelchair and, if necessary, to take a passenger.
Going to work, shopping, taking children to school, going to the cinema, everything is possible with Benur! And thanks to its removable bench, it can also carry heavy loads.
The Benur bike is available in a version with a solar roof, which allows the battery to be recharged throughout the day.
Learn more:

This bike is developed by a company that hosted the Sun Trip on its premises on July 30, 2020.

Views: 271

Preparation of the Sun Trip Europe in April

Obviously, this month of April will have been marked by the re-containment and the limit of 10 km around the home! Luckily, half of my perimeter was surrounded by nature and was quite hilly. It was also the opportunity to discover or rediscover side roads and small forgotten roads … I saw spring unfold visibly, despite an episode of snow and night frost.

By knitting in this perimeter, I increased the distance covered each week. For my longest outing, I managed to do a 200 km lap with 2600m of vertical drop!
April ends with rain! Suddenly, the bike remains in the garage and I take this opportunity to refine the itinerary for this summer and publish a few articles.

Date GPS Dist.
h : mn
27/04 164 5:42 28,9 2355 1902
24/04 203 6:49 29,7 2732 2327
23/04 104 3:38 28,6 1372 1178
15/04 81 3:06 26,1 1175 633
10/04 71 2:48 25,4 825 159
08/04 52 2:00 27,9 670 171
02-04 232 8:40 26,8 2545 2010
Avril 908 32:19 28,1 11674 8380

Views: 182

Preparation of the Sun Trip Europe (March)

At the end of March, I took advantage of a period of full sun to restart my solar bike. I was able to carry out 3 outings before confinement, with several objectives:
– test the various modifications or repairs carried out on the bike this winter,
– get used to pedaling again for a whole day,
– test different settings to better manage engine consumption (my average consumption in Wh / km on the Sun Trip France in 2020 was quite high).

Another objective, not the least, was to take advantage of this beautiful spring atmosphere by visiting the Côte-d’Or and the Saône-et-Loire.


Date GPS Dist.
D +
h: mn
24-03  188 1625 6:45 27.8 2129 1722
31-03  210 1975 7:44 27.2 2354 1982
02-04  232 1590 8:40 26.8 2545 2010

Solar production

In this season, the solar radiation is obviously less strong than in summer, the available energy is about 60% of what it is in July. If during the summer of 2020 I collected around 3000 Wh / d on the best days, here I have recovered up to 2000 Wh / d, which is already not so bad.
The solar charge was increased thanks to the absence of wind which made it possible to ride with the panels tilted at the start and end of the day. But the wooded parts of the course made it difficult to catch the light, even with trees without leaves!

Engine consumption

To maintain a balance between consumption and production, I tested different settings in the Cycle Analyst depending on the terrain (maximum speed, maximum power, etc.)
On the first ride, I used too little the battery in the morning. So much so that during the meal break, with the panels perfectly oriented, my battery recharged very quickly. At half-time during the break, I had the feeling of “losing” this precious solar energy which could no longer enter my full battery!
During the next 2 outings, I corrected the shooting by increasing the speed in the morning and therefore the fuel consumption. Downtime is in fact privileged moments of charging when the panels can be perfectly oriented towards the sun.

Balance sheet

Overall, I managed to balance production and consumption until 5:30 p.m., then production became too low to cover consumption. And no question of reducing consumption: I had to be home by 7 p.m., curfew time!

Views: 127

April 2: 3rd Sun Trip Europe preparation outing

It was the 3rd great preparation outing for the Sun Trip Europe before the reconfinement.
I was able to enjoy the beautiful landscapes of Côte-d’Or, visit corners that were unknown to me. And I even drove a bit in Saône-et-Loire. It was good to ride in the sun, without fear of miles.
To say that the confinement will soon lock us into a 10km perimeter around our home!
Tour: 232 km
Elevation +: 1590m
Consumption: 2540 Wh
Production: 2010 Wh

Views: 104

March 31: 2nd Sun Trip Europe preparation outing

The first outing being conclusive, I wanted to continue my momentum and exceed 200 km during the day. The sun was 100% with me, but the solar power is obviously less in March than in summer (between 60% and 70%). I wanted to see the amount of energy produced by the panels under these conditions.
Consumption: 2130 Wh
Production: 1720 Wh

Views: 101

Sun Trip 2021: discovering Europe!

In spring 2020, the departure for China had been postponed to 2021. Unfortunately, the global health situation still does not allow such a destination.
It is the reason why the 2021 edition of the Sun Trip will take place in Europe! We all hope that spring will bring an improvement in the health situation and a relaxation within the European area.

After a prologue between Lyon and Brussels in the first half of June, the big start will be given in mid-June in Brussels for an arrival in Lyon in less than 100 days. Participants will have to go through 5 compulsory check-points:
– Stockholm in Sweden,
– Constantza in Romania,
– the Passo dello Stelvio in Italy,
– the Pico del Veleta in Spain,
– Porto in Portugal.

Between these compulsory passage points, participants are free to choose their route.
Some countries are essential: Belgium, Netherlands, Germany, Denmark, Sweden, Estonia, Latvia, Lithuania, Poland, Romania, Italy, Spain, Portugal.
But in Eastern Europe in particular, many alternative routes are possible between Ukraine, Belarus, Slovakia, Hungary, Bulgaria, Serbia, Croatia, Slovenia, Austria …

Voir en plein écran

Views: 116

Solar bikes in Corsica, with Vécolo association

Cycling as therapy is an objective pursued by the Grenoble-based association Vécolo, which promotes a return to sports. To encourage people to resume physical activity after a long battle with illness or medical treatment, she organized a challenge on the road to GT20 (Grande Traversée). A bike ride through Corsica, which took place in 8 stages from Bastia to Ajaccio, with nearly 500 kilometers covered for more than 8,000 meters of vertical drop.


In total, 16 participants took part in this first edition, which was held from September 19 to 27, 2020. All were equipped with an electric bicycle, in order to offer more autonomy and mobility to everyone, everything. by enhancing self-esteem.
Beyond physical and mental performance, this challenge is a vector of social diversity. The different stages were punctuated by moments of conviviality, which united the whole group.
Interview with Jean Bizet, member of the association, and Christophe Bayard, project manager.

Views: 129

Return via Jura and Saône-et-Loire

August 10, from Albertville (Savoie) to Bois-d'Amont (Jura)
Unlike previous editions of the Sun Trip where my solar bike could get on a train (TER), this year I have to return by road.
I'm not going home by the fastest route, I'm going to go up to cross the Jura where I will find calm roads and landscapes, and too bad for the drop! Or rather, so much the better, because it is the height differences that provide beautiful panoramas!

August 11, from Bois-d'Amont (Jura) to Saint-Désert (Saône-et-Loire)

From Saint-Désert (Saône-et-Loire) to Dijon (Côte-d'Or)

Views: 93

Nice meeting in Bresse

Saint-Germain-du-Bois, 4 p.m.

I sip a soda in the shade of a bistro. Someone is walking down the street. Seeing my bike, all panels exposed to the sun, he stops. And he looks for his owner on the terrace.
Here we are at a table and we are talking about cycling. Tanguy has been riding a bicycle or electric trike for more than a decade, as have his 3 children. For all their trips: work, studies, shopping etc …
His solar panels are installed on the roof of his house, not on the bikes!

Note that Tanguy wears a motorcycle helmet and a motorcycle airbag vest to protect himself from cars … in memory of a bad experience.
Bravo Tanguy, for your radical commitment to the planet!

Views: 126