Professional race timing for 5Ks, marathons, ultramarathons, backyard ultras, and loop races. Chip timing or manual bib tracking — family and friends follow along in real time, no matter where the course goes.
// Timing Solutions
Whether your event has chip infrastructure or you need a fast, flexible manual solution — Relentless Timing has you covered either way.
RFID chip technology automatically captures split times as athletes cross timing mats at the start, checkpoints, and finish line. Zero manual entry — fully automated, fully accurate, built for high-volume events.
Our mobile and tablet app lets volunteers at any checkpoint enter a bib number and instantly log the athlete's split time. Perfect for loop races, backyard ultras, and aid-station check-ins where chip infrastructure isn't practical.
// Race Day Process
From setup to results in a few straightforward steps — so you can focus on putting on a great event.
Share your race details — date, format, number of athletes, checkpoints. We configure the timing system to match your course layout exactly.
Upload your participant list with names, bib numbers, and any other details. Everything is pre-loaded into the system before the start gun fires.
Chip mats activate automatically. For bib tracking, volunteers open the app on any phone or tablet and start logging numbers at their checkpoint.
Family, crew, and friends visit your race's live results page — updated the moment each athlete passes through. No refresh needed.
When the last finisher crosses the line, official results are complete — sorted by finish time, category, gender, and age group, ready to share.
// Live Results
Every event gets a dedicated live results page that updates in real time as athletes hit each checkpoint. Family and friends can watch the progress of every runner from anywhere in the world.
The results page shows current checkpoint, elapsed time, and position — updated the instant a bib is entered or a chip is read. No app download required for spectators. Just a link.
For loop races and backyard ultras, the page tracks completed loops, current lap count, and cumulative mileage — exactly what crew and pacers need to know.
| Place | Bib | Athlete | Checkpoint | Elapsed |
|---|---|---|---|---|
| 1st | #042 | J. Martinez | Mile 75 AS | 14:22:08 |
| 2nd | #017 | K. Thompson | Mile 75 AS | 14:38:41 |
| 3rd | #089 | S. Nakamura | Mile 62 AS | 15:05:17 |
| 4th | #031 | A. Williams | Mile 50 AS | 13:12:55 |
| 5th | #104 | R. Chen | Mile 50 AS | 13:41:30 |
// Platform Features
Built by an engineer who has run 100-mile races — so every feature solves a real problem race directors and athletes actually face.
Results push live the moment a bib is entered or chip is read. No polling delays, no page refresh required for spectators.
The volunteer app runs on any smartphone or tablet. No special hardware needed — if it has a browser, it can run a timing checkpoint.
Track loop completions, calculate cumulative mileage per athlete, and display current lap count on the live board — built for the most complex formats.
Automatic sorting by overall place, gender, and age group. Awards reports generated instantly when results are finalized.
Every race gets a public URL. Send it to athletes in their confirmation email so friends and family are ready before race day.
Official results exported to CSV, PDF, or directly publishable on your race website. Full split history for every finisher.
The results platform runs on cloud infrastructure — no single point of failure, available to fans globally regardless of how remote your race venue is.
Mark athletes as Did Not Finish or Did Not Start with a single tap. The live board updates automatically so crew and volunteers are always informed.
// Perfect For
From your neighborhood fun run to a multi-day 100-mile sufferfest deep in the mountains.
Community events, charity runs
Road and trail formats
Point-to-point or out-and-back
50K, 50 Mile, 100K, 100 Mile
Fixed-time, timed-distance loops
Hourly loops until one stands
"I've toed the start line of multiple 100-mile races and crossed those finish lines on my own two feet. I know what it means to have crew waiting at mile 75 with no way to know if you're five minutes out or five hours out. Relentless Timing exists because athletes and their people deserve better than a spreadsheet updated once an hour."
— Ray Smith, Founder | Relentless Timing | 100-Mile Finisher
// Book Your Race
Tell us about your race — format, date, number of athletes, and course layout — and we'll put together the right timing solution for you.