About the Cancer League of Colorado Race 4 Research
Washington Park is the setting, and it is one of Denver's most familiar running spots. The course winds through the park, mostly flat, with tree-lined paths and the lake nearby. The Miracle Mile section of the route is lined with tribute posters honoring people touched by cancer, which gives the middle of the race a quiet, personal weight that most races do not have.
Packet pickup and bib collection happen at the registration desk on race morning, so arriving early helps. There is day-of registration available at the park as well, though online registration beforehand is preferred.
Free race emails
Get the Weekly RunSesh
In for this one or still deciding, keep race season near Denver on your radar: a Monday look ahead and a Thursday rundown of the weekend's races.
Two helpful emails per week. No spam. Unsubscribe anytime.
Finish-Time Stats
Going by the 2025 results, this is a small, friendly field, and the spread of finish times is wide, so this is a mostly recreational race rather than one for club runners.
5K · 2025 results
256finishers
16:26winner
44:26median
1:14:57cutoff
Top 3: Adam Rich (16:26) · Andy Rinne (19:03) · Drew Sullivan (19:59)
The Cancer League of Colorado Race 4 Research has been held every year since at least 2020. That is as far back as RunSignup's records for this race go, so it may well be older.
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Jul 27, 2026.
Distances & Start Times
Going for a Time?
Set a goal and get a pace band: every mile split on a card sized for your phone lock screen, so race morning needs no math.
Plan Your TripWhere to Stay
Traveling for this race? The map shows hotels and rentals in and around Denver — pan or zoom to compare what's nearby.
The map is provided by Stay22. If you book through it, RunSesh may earn a commission at no extra cost to you — it never affects the races we list.