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Why are cycling’s anti-doping tests being carried out at night?
Anti-doping tests carried out in the middle of the night at the 2026 Tour de France have put cycling's drug-testing regime under scrutiny, after yellow jersey holder Tadej Pogačar and his main rival Jonas Vingegaard were woken for checks in the early hours on Saturday. Vingegaard subsequently crashed out of the race the following stage, prompting speculation that disrupted sleep may have played a part, while others in the sport argue such tests are a necessary and effective tool against doping. The move has divided opinion: some, including former Lance Armstrong team-mate Jonathan Vaughters, back the practice as a strong deterrent against micro-dosing, while riders' union the CPA says waking competitors overnight is unnecessary and potentially dangerous.
Reports indicate riders from five teams were tested between 11pm and 6am, well outside the normal testing window and a rare occurrence requiring special permission from French authorities, in this case the Parisian public prosecutors' office. The International Testing Agency, which conducts around 600 tests per Grand Tour on behalf of the UCI, has not disclosed its specific reasons for the night-time checks, though the UCI has defended the measure as an "exceptional" but justified step given that the fight against doping is an "absolute priority". Experts say testing during the normally untested overnight hours could help catch riders using micro-dosing techniques with substances such as EPO, HGH or testosterone, which can clear the body within hours and otherwise evade detection.
In short
- Tour de France riders tested overnight in rare anti-doping move
- Pogačar and Vingegaard woken for checks; Vingegaard later crashed out
- UCI defends tests as targeting hard-to-detect micro-dosing
Steelman: both sides, in good faith
The strongest fair case each way — we don't pick a winner.
The case for
Night-time testing is a necessary tool to catch sophisticated doping methods that would otherwise evade detection. Substances like EPO, HGH and testosterone can leave the system within hours, making them invisible to standard daytime testing protocols. Since preserving sport integrity through rigorous anti-doping measures is paramount, testing during normally unmonitored overnight hours represents a justified, if exceptional, step, with experienced figures in the sport arguing that such unpredictability serves as an essential deterrent against evolving micro-dosing techniques.
The case against
Waking athletes for tests in the middle of the night causes unnecessary disruption to rider welfare and safety. Sleep deprivation impairs performance, judgment and reactions, potentially affecting race outcomes and creating dangerous conditions on the road, as evidenced by Vingegaard's subsequent crash. The riders' union argues such overnight testing is disproportionate—if the sport genuinely prioritised athlete safety, it would pursue alternative detection methods rather than subjecting exhausted competitors to demanding physical competition under compromised conditions.
Explained simply
Professional cycling, particularly the Tour de France (the sport's most prestigious annual race), has a long documented history of doping, where riders use banned substances to enhance performance. Anti-doping testing is a key part of efforts to combat this, with authorities regularly checking riders' samples to detect prohibited drugs.
Cycling's anti-doping authorities have recently begun conducting tests at night during the 2026 Tour de France, a departure from normal daytime procedures that required special approval from French authorities. This unusual step reflects attempts to catch riders using certain drugs—such as EPO and testosterone—that can clear from the body within hours and might otherwise escape detection through standard testing.
The night-time testing has sparked disagreement within the sport. Some argue it is a necessary and effective deterrent against doping, whilst others worry that disrupting riders' sleep during intense competition poses unnecessary safety risks.
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