Bertie, from Adventure Valley in County Durham, covered 18ft (5.48m) in 19.59 seconds - smashing the previous best of 43.7 seconds, which stood since 1977.
He clocked his time in July last year, but the achievement has now been ratified and appears in the new edition of the Guinness Book of Records.
Owner Janine Calzini said he could be tempted to make another attempt on TV.
She added: "He's just like the real-life Usain Bolt as he loves the attention his run has brought and meeting people.
"They're amazed when they see how fast he moves.
"He lives with his girlfriend, Shelly, but she's the opposite as she hides away."
Bertie, who raced to his record on a diet of strawberries, is thought to be about 10 years old.
Leopard tortoises typically live to between 80 and 100 years old and Mrs Calzini, who runs the adventure park with her husband Marco, believes Bertie could be spurred on to an even faster time by the media spotlight.
"There's nothing to say he couldn't beat his own record. We had a lot of inquiries after Bertie's run but had to turn them down while we waited for the record to be confirmed.
"If someone asked him to make another attempt on TV then maybe he could do it."
Bertie was given to Adventure Valley four years ago when his owners went abroad.
Befitting his status as a record-breaker, he and Shelly now live in a larger enclosure.
The record was on a running track specified by Guinness with an incline of 1 in 12.
The previous best was set at the National Tortoise Championship at Tickhill, South Yorkshire, on 2 July 1977.

This is their first major operation in CAR since about 150 troops were deployed in recent weeks to Bangui, amid warnings of a genocide.
Around a quarter of CAR's 4.6 million population have fled their homes since conflict erupted in March 2013 between mainly Muslim and Christian militias.
The African Union and France have about 7,000 troops in the country.
They have been battling to curb the conflict, and the EU has pledged to send up to 1,000 troops and the United Nations (UN) about 12,000 troops.
French troops handed control of the airport in the capital, Bangui, to the EU force on Wednesday.
Bangui has seen some of the worst fighting, and AU troops escorted more than 1,200 Muslims out of the city on Sunday to protect them from the mainly Christian anti-balaka militia.
The EU force is under the command of a French officer, Maj-Gen Philippe Ponties, and is made up of French and Estonian troops.
Source: Index Mundi
Their deployment to the airport is intended to allow French troops to move elsewhere in the country.
UN officials and aid agencies have warned that hatred between Christians and Muslims could lead to a genocide and the partition of the country.
Few Muslims remain in Bangui, with most of them fleeing to the north or neighbouring states.
Christians form the majority in CAR, and the anti-balaka say they took up arms after coming under attack from the mainly Muslim Seleka rebels who seized power in March 2013.
Seleka leader Michel Djotodia was forced to step down in January, because of his failure to stem the violence.
He had been the CAR's first Muslim ruler. His supporters accuse troops loyal to the president he overthrew, Francois Bozize, of fuelling the conflict.

The furry explorer climbed inside the child's plaything and jammed its head through a small hole at the rear.
Despite its owners attempts to free it, the plastic proved too tough and the "unusual" emergency call-out was made.
Oxfordshire Fire and Rescue Service said the kitten was unharmed but its experience served as a warning against "diving into your presents too early".
Crews were called to a house in Stanford-in-the-Vale at about midday on Wednesday.
The Usain Bolt of the tortoise world has raced into the record books as the fastest ever.
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European Union (EU) troops have taken control of security at the Central African Republic's (CAR) main airport.
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A three-month old kitten had to be rescued by firefighters after it got stuck in a toy car.