About the Summer Sizzler- Denver
The Summer Sizzler runs early in the morning, which is the right call for a summer race in Thornton. Several distance options are on the course, from a short kids dash up through longer routes, so groups with mixed goals tend to show up together. Age group awards go deep, covering a wide range of brackets.
Packet pickup opens on race morning well before the start, so there is no need to make a separate trip the day before. Results and awards are posted at the registration tent right after you finish, so you can stick around and see where you landed without waiting long.
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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.
3.1 Miles · 2025 results
165finishers
17:35winner
40:34median
1:40:16cutoff
Top 3: Xavier Sanchez (17:35) · Logan Clark (19:52) · Diego Garcia (20:20)
6.2 Miles · 2025 results
61finishers
36:54winner
1:08:21median
2:36:35cutoff
Top 3: Julio Santana (36:54) · Jason Sayre (42:42) · Taylor Tvede (47:12)
· 2025 results
33finishers
1:08:08winner
1:40:06median
2:12:00cutoff
Top 3: Tyler Davis (1:08:08) · Julie Shah (1:11:47) · Nate Southam (1:13:39)
The Summer Sizzler- Denver has been held every year since at least 2022. 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
50m8/8/2026 07:00$17
1 Mile8/8/2026 07:00$22
3.1 Miles8/8/2026 07:00$44
6.2 Miles8/8/2026 07:00$44
15K8/8/2026 07:00$44
Virtual Race8/8/2026 07:00$42
Volunteer and Run8/8/2026 07:00$17
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.
Where to Stay
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