London Daily

Focus on the big picture.
Sunday, Apr 05, 2026

Why A Bulgarian Ultra-Marathon Runner Shut Himself In A Glass Box

Why A Bulgarian Ultra-Marathon Runner Shut Himself In A Glass Box

Krasse Gueorguiev, who began his experiment on Sunday, will have a bed and a treadmill and no access to books, a computer or phone, only speaking to members of the public for 30 minutes every day.
Bulgarian ultra-marathon runner, Krasse Gueorguiev, will live in a glass box for 15 days in a park in Sofia, to raise money to help young people fight addictions.

Mr Gueorguiev, a motivational speaker and charity ambassador, has run some 30 ultra-marathons worldwide, from the Arctic to Cambodia, as well as a 217-kilometre race in California's Death Valley.

"I want to challenge myself," Mr Gueorguiev told Reuters. "I want to show when you put someone in the box how psychologically they change."

The funds raised will be used for various projects to prevent addictions among children under 18, including drugs, alcohol, digital media and energy drinks.

A box with three glass walls has been put on a pedestal in front of the National Palace of Culture in Sofia. Mr Gueorguiev, who began his experiment on Sunday, will have a bed and a treadmill and no access to books, a computer or phone, only speaking to members of the public for 30 minutes every day.

"This is not a physical experiment it is psychological experiment," he said.

In 2019 Gueorguiev ran 1,200 kilometres (about 746 miles) through Bulgaria, North Macedonia and Albania to urge governments to build better infrastructure to connect people.

In 2003, American illusionist David Blaine spent 44 days sealed in a transparent box suspended over the bank of the River Thames in London with only water to drink, in a stunt criticised by media and the public at the time.
Newsletter

Related Articles

0:00
0:00
Close
UK Considers Deploying Aircraft Carrier for US Independence Day Celebrations Amid Renewed Transatlantic Focus
United Kingdom Moves to Attract AI Firm Anthropic Amid Tensions with US Defense Officials
RAF Intercepts Iranian Drones in Middle East to Defend Allied Security Interests
Labour Signals Shift on Foie Gras and Fur Restrictions to Advance EU Trade Talks
Seven Arrested Near RAF Base as UK Authorities Respond to Protest Activity
Economic Pressures Mount as Analysts Warn UK Growth Is Being Constrained by Policy Burdens
UK Green Party’s Push for Church-State Separation Sparks Debate Over National Identity
Strategic Island Emerges as Growing Challenge for United States and United Kingdom Defense Planning
Pepsi Pulls Sponsorship from UK Festival Following Backlash Linked to Kanye West
Signs Emerge of Declining Enthusiasm for Social Media in the United Kingdom
Security Alert Raised Ahead of Meghan Markle’s Planned Visit to Australia
UK Food Halls Defy Hospitality Slowdown, Emerging as Bright Spot in Challenging Market
UK Sets Firm Conditions for Military Action, Insisting on Legal Mandate and Clear Strategy
UK Medicines Regulator Launches Probe into Peptide Clinics Over Health Claims
New North Sea Drilling Unlikely to Significantly Cut UK Gas Imports, Analysis Finds
Woman Linked to UK’s First All-Female Terror Plot Faces Deportation
Downed US Aircraft Over Iran Linked to Operations from UK Airfield
Two Men and Teen Detained in UK Following Attack on Jewish Charity Ambulance
UK Police Launch Inquiry After Firearms Left Unattended Outside Mayor’s Residence
Giuffre Family Calls on King Charles to Meet Epstein Survivors During US Visit
Amber Wind Warning Issued as Storm Dave Approaches Parts of the United Kingdom
Prince Harry and Meghan’s Australia Visit Set to Draw Heightened Global Attention
UK Considers Entry Fees for Overseas Visitors at Major Museums Ahead of 2026 Travel Season
UK Prime Minister and Kuwait Crown Prince Coordinate Security Response After Regional Escalation
Calls Grow to Expand Fully Paid Maternity Leave for UK Teachers Amid Workforce Pressures
UK Secures Tariff-Free Access to US Market in Landmark Pharmaceuticals Agreement
Trump Projects Strength in Critique of UK Leadership and Naval Readiness
UK FinTech Setback as VibePay and Smartlayer Cease Operations Amid Funding Pressures
UK Leads Global Coalition of Over Forty Nations to Address Strait of Hormuz Crisis
UK Firms Urged to Accelerate Preparation as New Sustainability Reporting Rules Take Shape
UK Moves Rapid Sentry Air Defence System to Kuwait After Drone Strike Escalation
Transatlantic Relations Tested as UK Seeks Balance While Trump Reshapes Strategic Approach
Trump’s Strategic Pressure on UK Seen as Push for Stronger Alignment and Fairer Terms
UK Focuses on Trade Finance to Secure Critical Materials for Defence and Energy Sectors
Majority of UK Businesses Hit by Middle East Conflict While Confidence Holds Firm
UK Royal Navy Faces Renewed Scrutiny as Debate Intensifies Over Capability and Readiness
Reform UK Faces Mounting Distractions as Policy Agenda Struggles to Gain Traction
Investigation Launched Into Northern Cyprus IVF Clinics After UK Families Receive Incorrect Sperm
International Meeting Issues Unified Call to Safeguard Navigation Through Strait of Hormuz
Potential Strait of Hormuz Closure Raises Concerns Over UK Food and Medicine Supply Chains
UK Leads Coalition of Over Forty Nations Urging Iran to Reopen Strait of Hormuz
UK Secures Tariff-Free Access for Medicines in Landmark US Pharma Trade Agreement
King Charles III Invited to Address Joint Session of U.S. Congress in Rare Diplomatic Honor
Debate Grows Over Whether Expanded North Sea Drilling Can Reduce UK Energy Bills
UK Faces Heightened Risk of Jet Fuel Shortages, Airline Chief Warns
UK Ends Police Investigations into Lawful Social Media Posts After Review Finds Overreach
Abramovich Moves to Establish Charity for Frozen Chelsea Sale Proceeds Amid UK Dispute
Starmer Reaffirms NATO Commitment While Responding to Trump’s Strategic Critique
UK Aid Reductions Raise Fears of Severe Human Impact Across Parts of Africa
UK Signals Renewed Push for EU Cooperation as Iran Conflict Reshapes Security Landscape
×