Run The Day vs. Let’s Do This: Registration Platforms Built for Different Races
Ian Campbell | February 23, 2026
Run The Day and Let’s Do This both support races, but were built for different types of races that are different sizes and have different staffing, promotional, operational and software needs.
This blog was written to clarify the different types of race that each piece of software was built for.
What Is Let’s Do This?
Let’s Do This is a UK-based platform designed to help runners discover and register for endurance events. It focuses heavily on large-scale races, offering a marketplace where participants can browse events similar to booking travel or experiences.
Its core focus is:
- Large-scale endurance events
- Marathon and ultra-distance races
- High-participation events (often 50,000+ runners)
- Consumer discovery and marketing at scale
Is Let’s Do This a Good Fit for 5K Races?
While Let’s Do This works well for large endurance events, it may not be ideal for smaller, community-based 5Ks. These races often need simple tools for registration, check-in, and race-day execution rather than marketplace exposure.
The platform is structured around the idea that runners browse, compare, and register for events in the same way they might book travel or experiences.
As a result, Let’s Do This emphasizes:
- Event discovery and promotion
- Complicated event pages and content
- Marketplace visibility
- Extensive configuration options
- Integrations designed for large operational teams
This model works well for:
- Major city marathons
- International and destination races
- Events with paid full-time staff and multi-year execution timelines
- Organizations focused on global reach and participant acquisition
Run The Day Is Built for 5K Races For
Run The Day was built specifically for local 5K races and community events—most of them with fewer than 5,000 runners.
These races are typically:
- Organized by volunteers
- Run by nonprofits, schools, or townships
- Managed by small teams
- Executed with tight timelines
- Require easy-to-use software and race-day simplicity
Run The Day focuses on:
- Clean, participant data
- Simple registration setup
- Direct integration with runner check-in for bib assignments and timing software
- Minimal configuration
- Technology that works on race morning, not just during setup
The platform is designed to reduce:
- Manual data cleanup
- Training needed to use it
- Spreadsheet handoffs
- Last-minute fixes
- Volunteer confusion
Small races need reliable tools for timing and results. If you're unsure what setup to use, here’s a complete guide on how to time a 5K race.
Complexity vs. Operational Fit
Let’s Do This is feature-rich by design.
That complexity supports large events with specialized staff handling marketing, registration, logistics, and operations as separate roles.
Small and mid-sized 5Ks operate differently.
In many local races:
- One person manages registration, emails, and race-day logistics
- Volunteers rotate roles
- There is not a full team of full-time professionals dedicated to event promotion
- Changes happen late and need to work immediately
In those cases, additional layers of configuration don’t add value.
They increase the chance of mistakes.
Run The Day intentionally limits complexity to support:
- Faster setup
- Clear data structures
- Predictable race-day behavior
Marketplace Model vs. Race-Day Model
A key difference between the two platforms is where they focus.
Let’s Do This is marketplace-driven:
- Optimized for discovery and reach
- Built to connect runners with events at scale
- Designed for big full-time race operations teams
Run The Day is race-day-driven:
- Optimized for execution
- Built to make life easier for volunteer race directors be combining registration → check-in → timing → results in a single system
- Designed to make race day seamless
Choosing the right setup depends on your event size. Learn more about different race timing solutions available for 5Ks.
Run The Day vs. Let’s Do This (Quick Comparison)
| Aspect | Run The Day | Let’s Do This |
| Primary Market | USA-focused | UK-based |
| Core Focus | Local races (5Ks, charity runs, triathlons) | Large endurance events & marketplace |
| Typical Event Size | Community races under 5,000 runners | Large marathons and endurance events (30,000+ runners) |
| Core Strength | Integrated registration + timing + check-in | Event discovery and global portfolio reach |
| Platform Style | Simple, practical, organizer-first | Feature-rich, complex |
| Best For | Race directors running community events | Race companies that own multiple massive global races |
| Setup & Learning Curve | Easy to get started | Steep learning curve |
| Tools Emphasis | Registration, timing, race-day operations | Event discovery, listings, brand exposure |
Which Platform Fits Which Race?
Let’s Do This is a strong fit for:
- Large endurance events
- Destination races
- Events with professional staff
- Races prioritizing marketing reach and discovery
Run The Day is a strong fit for:
- Local 5Ks
- Charity and school races
- Volunteer-run events
- Races prioritizing simplicity and reliability
The mistake is assuming one platform should work equally well for both.
How Run The Day Works For Small 5K Races
Run The Day was built around a simple idea:
Small races need 5k race registration software that matches their reality.
That means:
- Registration, check-in, and timing in one connected system
- Clean data with no spreadsheets
- Flexibility for race-week changes
- Human support
- Less complexity, not more
The goal isn’t to build the largest marketplace.
It’s to make race morning seamless.
Final Takeaway
Let’s Do This is building a global endurance ecosystem.
Run The Day is focused on delivering smooth race days to local communities figuring out how to host a 5K, from registration setup to race-day execution.
If you’re organizing a major marathon with tens of thousands of runners, Let’s Do This is a powerful platform.
If you’re running a volunteer-led 5K with 400 runners, simplicity usually wins.
Because at the end of the day, runners don’t remember the size of your race software company’s latest funding round.
They remember how they felt on race day. When check-in runs smoothly, results are accurate and runners leave feeling energized, they are more likely to come back next year.
FAQs
Q1: What is Let’s Do This used for?
A: Let’s Do This is a marketplace platform where runners can discover and register for endurance events like marathons, triathlons, and ultra races.
Q2: Is Let’s Do This good for small 5K races?
A: It depends. While it offers strong marketing reach, smaller 5Ks often need simpler tools focused on race-day execution rather than discovery.
Q3: What makes Run The Day different?
A: Run The Day focuses on local races by combining registration, timing, and check-in into one simple system designed for race directors and volunteers.
Q4: Which platform is better for community races?
A: For most community 5Ks, platforms like Run The Day are better suited because they prioritize ease of use and race-day reliability.
