About Leo Lundy
Leo Lundy is a researcher at Trinity College Dublin’s Centre for Biomedical Engineering (TBCE), working within the Reilly Lab. His work explores the physiology, psychology, and cognition of lifelong multi-marathoners — runners who have completed 100 or more marathons — to understand how extreme endurance participation influences health, resilience, and ageing.
Through large-scale international datasets and close collaboration with research partners worldwide, his work integrates demographic, physiological, and psychological data to identify both the strengths and risks of sustained endurance sport.
Leo is currently pursuing a PhD at Trinity College Dublin and has personally completed more than 400 marathons across 22 countries.
Leo’s work has been featured in major outlets including The Guardian, The Times, and Runner’s World, and presented at conferences such as ECSS Rimini 2025 and ISSP Hong Kong 2025.
In the Media
Selected media coverage featuring Leo’s personal Multi-Marathon Journey
Marathon man Leo aiming for 100 mark The Down Recorder |
Basingstoke’s Leo Lundy completes century of marathons Basingstoke Gazette |
Coburg Wintermarathon attracts around 200 runners Neue Presse Coburg |
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Leo's multi-marathon milestones
Recognition through international 100 Marathon Clubs and global multi-marathon communities
| Milestone | Description | Verification |
|---|---|---|
| 25/ 50 / 75 / 100 / 200 / 300 / 400 Marathon Club Ireland Awards | Recognised incremental membership achievements | MCI 100 Marathon Club Awards |
| 100 / 200 / 300 / 400 UK 100 Marathon Club Awards | Recognised incremental membership achievements | UK 100 Marathon Club Awards |
| 100 Road Marathons | Road marathon category completion | 100 Road Marathons |
| 50 Counties Challenge | Marathons completed in 50 UK and Ireland counties | 50 county challenge |
| 100 Marathons in Multiple Countries | England and Republic of Ireland | 100 Marathons in Multiple Countries |
| Triple Crown | 100 Road + 100 Trail + 100 Ultra Marathons | 100 Road + 100 Trail + 100 Ultra Marathons |
| 12 in 12 | 12 marathons in 12 months Av time 3:44:32 | 12 marathons in 12 months |
| 10 in 10 | 10 marathons in 10 days | 10 marathons in 10 days |
| 52 in 52 | One marathon every week across a full year | One marathon every week across a full year |
| 100 in 100 | One marathon every week for 100 weeks | One marathon every week for 100 weeks |
| A-Z | A-Z challenge e.g., Amsterdam, Berlin ... Zurich | A-Z challenge |
| 2 Flags | 2 Flags (20 Countries) | Countries challenge |
Full details of selected achievements provided in linked milestone pages.
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