What March Times at 5,167 Feet Actually Mean

The Problem

Colorado Times Are Not What They Look Like

A junior girl runs 5:10 at the Niwot Invitational in late March. A college coach in North Carolina pulls up her time on Athletic.net and moves on. She’s not a Division I runner.

Except she is.

That 5:10 was run at 5,167 feet. With a conservative altitude conversion and the progression Colorado athletes typically show from March to May, she’s almost certainly breaking 5:00 at sea level — especially if she gets to a meet like Running Lane the week after the Colorado State Championships.

A junior boy runs 9:30 in the 3200m at the same meet. That time doesn’t show up on any college coach’s radar. But at sea level, with normal late-season fitness, that same athlete is looking at low 9-teens or better if he gets to run a post-season sea-level race. By his senior year, he might be able to dip under nine.

Every time in this document was run at 5,167 feet of altitude. We’re going to show you what those times actually mean, using three years of verified data: 1,153 athletes, 819 tracked progressions, and 44 confirmed sea-level comparisons.

Here’s what we looked at. On Saturday, March 28, the Niwot Invitational produced the fastest results in the meet’s history. We dug into every distance result, applied conservative altitude conversions that fall below NCAA methodology, and layered in historical progression data showing how much Colorado athletes typically improve from late March through the May championship season.

The short version: Colorado kids are faster than their times suggest, and we can prove it.

Methodology

How Much Does Altitude Actually Cost?

The conversions we use are conservative. They align with or fall below the NCAA’s own location-specific conversion tables.

We use the NCAA-standard altitude adjustment tool (TFRRS Mark Converter) at a comparable altitude venue, then apply Riegel’s distance-conversion formula to translate metric results to high school events. Each adjustment is pegged below the smallest estimated benefit in the data range — meaning the number is conservative for every athlete in the field, including the fastest.

Read Our Full Methodology →

Validation

Sea-Level Validation: What Actually Happens When Colorado Kids Travel

The altitude adjustment is not theoretical. Colorado athletes compete at sea-level meets every year. Here is what happened when they did.

Hunter Robbie (Niwot, Class of 2026 — Duke commit)

The most direct altitude comparison in this dataset. Robbie ran at sea level on March 12 and at altitude on March 28 — same athlete, same fitness, 16 days apart.

His sea-level 3200m equivalent is 8:45.82. Our 13-second adjustment applied to his Niwot 3200m of 8:56.61 gives 8:43.61 — within 2 seconds of his actual sea-level performance. And in the 1600m, our 5-second adjustment gives him a 4:10.20 sea-level equivalent — he actually ran 4:08.52 at New Balance Nationals. He ran very close to what the 5-second adjustment would suggest, and that was his second race of the day at Niwot.

Kinley Wolfe (Cherry Creek, Class of 2025 — UNC commit)

Sea-level improvement from State: 13.9 seconds. Our adjustment: 5.0 seconds.

Mia Williams (Fossil Ridge, Class of 2025 — Wake Forest commit)

Sea-level improvement from State 1600m: 13.2 seconds. Our adjustment: 5.0 seconds.

Evan Dann & Wyatt Dann (Castle View, Class of 2028 — freshmen in 2025)

Sea-level improvement: Evan 20.3 seconds, Wyatt 21.9 seconds. Both went sub-9:00 at sea level as freshmen. Our adjustment: 13.0 seconds. They are currently sophomores running 9:03 and 9:13 at the 2026 Niwot Invitational.

See All Sea-Level Comparisons →

Development

What the Data Shows: How Colorado Athletes Develop

Within a Season (March to May)

Across 375 tracked within-season progressions from 2024 and 2025, the median improvement from March meets to May championship meets:

These are population-level trends. Individual athletes vary. Some improve more, some less, some regress. The data describes what has historically happened, not what any individual athlete will do.

Year Over Year

Across 444 tracked between-season progressions:

The Year-Over-Year Numbers

Across 444 tracked between-season progressions, 67% of athletes improved in the 1600m and 64% improved in the 3200m from one year to the next. The 800m shows 59% improving year over year.

Obviously, so much can change from year to year — injuries, coaching changes, burnout, shifting priorities. Not every athlete improves. But across hundreds of data points, the trend is real and significant. Some of the biggest swings in the dataset:

Brogan Collins (Cheyenne Mountain, Class of 2025): Three consecutive Colorado State 4A 3200m appearances: 9:30 → 9:14 → 9:03. That is 28 seconds of improvement across three state meets.

Emry Schwalm (Heritage, Class of 2026): 3200m at state: 11:33 (sophomore) → 10:32 (junior). A 61-second improvement in one year.

Ryder Keeton (Niwot, Class of 2026): 3200m at state: 9:37 (freshman) → 9:23 (sophomore) → 9:02 (junior, won it). 35 seconds across three years.

2026 Results

The 2026 Niwot Invitational: What We See Right Now

The 2026 Niwot Invitational (March 28, 2026) produced the fastest results in the meet's history. For those who want to geek out on conditions:

Notable Doubles

Athletes Who Ran Two Distance Events

The 3200m started at 9:30 AM, the 1600m at 1 PM, and the 800m at 5:30 PM.

Boys

Girls

Full Results

2026 Niwot Invitational with Sea-Level Equivalents

Complete results for all six events — Boys and Girls 3200m, 1600m, and 800m — with conservative altitude-adjusted sea-level equivalents for every athlete.

Looking Ahead

What Happens Next

This analysis will be updated after the Pomona Invitational (~April 13, 2026) and again after the Colorado State Championships (mid-May). As the season progresses, the 2026 dataset will grow to include:

• Pomona Invitational (~April 13): Mid-season update with new times and progression tracking
• St. Vrain Invitational (~May 9): Full-depth results capturing the D2/D3 recruiting tier (500+ athletes)
• Colorado State Championships (~May 15): Championship performances across 5A/4A/3A
• Running Lane Championships (~May 23): Sea-level validation at Huntsville, AL — historically 30-50 Colorado athletes attend
• Brooks PR Invitational, HOKA Festival of Miles: Additional sea-level data points

Each update will include the same altitude adjustments and cross-references to previous meets so coaches can track individual athletes' progression through the season.