Upcoming running races in and near Centennial, Colorado - 5Ks, 10Ks, half marathons and more, with dates, pricing, finish-time stats, start-line maps, and local run clubs to train with.
Centennial is threaded together by greenbelts in a way that makes it feel built for running. The High Line Canal, Cherry Creek State Park, and the Willow Creek corridor give everyday miles real variety - paved paths, soft-surface trails, and enough hills, gullies, and ravines that even a neighborhood loop earns some honest climbing. Post-run culture is real here, with runners clustering around trail-adjacent spots like Resolute Brewing.
The race calendar here reflects that same character: a mix of charity fun runs, community 5Ks, and a handful of events that get you off the pavement and into the open space. Front Range seasons shape everything - fall is the busiest time to race, and the winter calendar is quieter but far from empty, because Colorado runners do not hibernate.
By the numbers
The Biggest and Longest-Running
The Centennial races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
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.
Common Questions About Racing in Centennial
I am thinking about my first race. Where should I start?
Every race in Centennial offers a 5K, and most also offer a 10K and a half marathon alongside it, so you can pick your distance and still show up to the same event as friends running something longer.
The only race here with published finish-time results - the Arapahoe Warrior 5K, with a field of 162 - had a median finish of 27:31, which gives you a concrete sense of the pace a competitive local 5K draws.
What does a race in Centennial typically cost?
Entry fees run from $10 to $39. The typical entry fee is $30. Two races already have a price increase scheduled, so if you spot one you want, registering early is worth it. No races here are free to enter.
Will I get a shirt at the finish line?
30 of the 31 races say they give a shirt. No race here says it gives a medal. One race has not published any giveaway details at all, so check that one's event page directly if finisher swag matters to you.
When is the best time of year to find a race in Centennial?
Fall is the busiest stretch, with 12 races running September through November and August seeing the single heaviest month at 7 races. Winter is the quietest window - February has just 2 - but with 10 races across December through February, the calendar does not go dark. Summer and fall together cover the bulk of the year's racing.
What distances can I race in Centennial?
All 31 races offer a 5K, 29 offer a 10K, and 28 offer a half marathon. Several events bundle multiple distances under one race-day umbrella - including a 1-mile option - so you can often choose your distance at registration and still share the course and the finish-line atmosphere with runners at other distances.
Are there trail races near Centennial?
Yes, 2 races around Centennial get you off the pavement: 2 are trail races. Surfaces are not always published, so it is worth checking a specific race before you register.
