Carlos Sainz marked his girlfriend Rebecca Donaldson’s 30th birthday on July 24, 2025, with a heartfelt two-word wish that caught the attention of fans worldwide. The Scottish model received numerous birthday messages on social media, but the brief and affectionate note from her partner, the Spaniard F1 driver, stood out for its simplicity and warmth.
The couple has been together since the summer of 2023 and has frequently appeared side by side at various Grand Prix events. Donaldson has become a familiar presence in the racing paddock, supporting Sainz through his demanding Formula 1 career.
To celebrate her special day, Sainz posted a photo of them together along with his unique birthday wish, capturing the affection between them as Donaldson reached this milestone age.
Looking Ahead: Carlos Sainz Prepares for the Upcoming Belgian Grand Prix
As the racing season continues, Carlos Sainz is gearing up for the Belgian Grand Prix scheduled for July 27 at the Circuit de Spa-Francorchamps. Despite the circuit‘s challenges in recent years, where Sainz’s past performance included a pole position in 2022 but only managed a podium finish, the Spaniard remains enthusiastic about the race weekend.
Since switching to the Williams team, the chances of securing a podium at Spa are slimmer, especially because the last Williams podium there occurred in 2021 under safety car conditions. However, the low-downforce nature of the track could work in Williams’ favor due to their strength in this setup under the current ground-effect regulations.

Reflecting on the upcoming race, Sainz expressed optimism about the new car updates and the unique challenges Spa presents:
“As we head to Belgium for the penultimate race before the summer break, we’ve all had some time off since Silverstone, so I’m feeling rested and ready to get out on track for one of the best circuits of the year! Spa always presents challenges and opportunities, whether that being the track characteristics or the unpredictable weather, it always makes for an interesting weekend. With the Sprint format adding to this year, let’s hope this can create some exciting opportunities for us.” —Carlos Sainz, Williams F1 Driver
“We’re coming with some updated package items, so it will be great to see how these perform on a more difficult track. I’m excited to get back out there and have a strong weekend!” —Carlos Sainz, Williams F1 Driver
Currently ranked 15th in the driver standings, Sainz aims to improve his position before the Formula 1 summer break begins.
The Significance of This Stage in Sainz’s Season and Relationship
Carlos Sainz’s simple yet meaningful birthday wish highlights the strong bond between him and Rebecca Donaldson, who remains a steady support in his professional and personal life. Their growing presence together in the racing world symbolizes a balance of love and career as Sainz navigates a critical part of his Formula 1 journey with Williams.
On the track, the Belgian Grand Prix represents not only a test of skill but also an opportunity for Sainz and his team to showcase improvements and build momentum ahead of the summer break. His determination to perform well at Spa could signal positive developments for both his championship campaign and his morale.
Fans will be watching closely to see how this optimistic phase in Sainz’s season unfolds, both for his racing achievements and the continued partnership with Donaldson off the track.
Our Reader’s Queries
Q. Why does Carlos Sainz have 55?
A. Over his career, the number 55 has become closely linked with the Spanish racer. This number is important both in racing and personal life. Sainz picked this number because it cleverly relates to his name: Carlo5 5ainz.
