Why do I misjudge travel time so badly with ADHD
Many people with ADHD misjudge how long travel or preparation will take, often arriving too late or too early despite good intentions. According to NHS guidance on ADHD in adults and NICE guideline NG87, this happens because ADHD affects how time is sensed, remembered, and used for planning. Difficulties with time blindness, executive functioning, and emotional regulation make accurate time estimation harder, not because of laziness or lack of care.
Understanding time perception and planning difficulties
Reviews of time perception in ADHD, such as one published in Frontiers in Human Neuroscience, describe consistent problems estimating how long tasks last and using time effectively to plan behaviour. People with ADHD often overestimate how much they can do in a short period, which leads to running late. Conversely, some may leave excessively early, unsure of how long things really take. Temporal myopia, meaning a focus on the present moment with reduced awareness of future consequences, makes tasks like getting ready or leaving the house feel abstract until the very last minute.
Dopamine, working memory, and task switching
Time perception relies on the brain’s dopamine-based reward system and working memory. In ADHD, differences in these systems make it difficult to hold time intervals in mind, track progress, or switch smoothly between tasks. Research using virtual reality time-based tasks, such as that in Scientific Reports, found that people with ADHD often check the time inconsistently or fail to act when they should. This leads to a mismatch between intention and action, for example knowing they should leave at 3:30 but continuing to focus on something else until 3:45.
Why ADHD brains underestimate or lose track of time
Studies show that adults with ADHD tend to underestimate time, particularly for routine or low-interest tasks. The NHS “Understanding ADHD in Adults” booklet notes that attention and motivation fluctuate, making it hard to judge how long tasks take. The ADHD brain’s reward system prioritises stimulating activities, so “just five more minutes” can repeatedly stretch the schedule. Combined with working-memory lapses and distraction, these tendencies lead to underestimating travel or preparation times and genuine surprise when lateness occurs.
Emotional effects of misjudging time
Repeated difficulties with time and punctuality often trigger feelings of guilt, shame, and frustration. The NHS “Making Sense of Adult ADHD” booklet highlights that these emotional responses can lead to avoidance, such as not checking travel details or resisting time planning because it feels discouraging. Over time, these patterns can increase anxiety and reduce self-confidence, creating a cycle of stress and further misjudgment.
NICE and NHS aligned strategies for better timing
The NICE NG87 recommendations advise combining practical tools with psychological support to improve time management. Strategies suggested by NHS self-help packs include externalising time with phone alarms or visual timers, reviewing past journeys to create realistic estimates, and breaking tasks into smaller steps like shower, dress, pack, and leave. CBT and ADHD-informed coaching can also help reduce self-blame and teach practical routines for leaving on time. Structured post-diagnostic reviews through services such as ADHD Certify can support adults in building sustainable, evidence-based time management plans.
Key takeaway
Misjudging travel time is one of the most common ADHD experiences, caused by differences in time perception, executive functioning, and emotional regulation. With structured tools, self-awareness, and the right professional support, it becomes easier to plan realistically, arrive calmly, and break free from the frustration of running late.
