Open Source vs Closed AI: Which Is Easier to Audit for Safety?

Open source AI models are generally easier to audit for safety than closed models, because their weights, training data, and code are publicly available for independent inspection. That said, open source does not automatically mean safe—it means the audit is possible, while closed models only allow the limited testing the vendor chooses to permit. This article explains why access matters, what an AI safety audit actually involves, and how to weigh the trade-offs for your own use case.

Formula

The calculator works out your average pace and speed for a run or ride. You enter the total time in minutes and the distance in kilometers, and it returns:

• Average pace = time ÷ distance, in minutes per kilometer (min/km)
• Average speed = distance ÷ (time ÷ 60), in kilometers per hour (km/h)

Variables: t = time in minutes, d = distance in kilometers. Pace is the time it takes to cover one kilometer; speed is how many kilometers you cover in one hour. The two are reciprocals when you account for units: pace (min/km) × speed (km/h) = 60.

Worked Example

Using the default values from the calculator—finish time 50 minutes, distance 10 km—the steps are:

1. Pace = 50 ÷ 10 = 5.0 min/km
2. Speed = 10 ÷ (50 ÷ 60) = 10 ÷ 0.8333 = 12.0 km/h

So an average pace of 5:00 per kilometer corresponds to a speed of 12 km/h. The calculator rounds both to two decimals, so you see 5.00 min/km and 12.00 km/h.

When to Use This Calculator

Use it after any timed run, bike ride, hike, or walk where you know the total time and distance. It is especially handy for training plans that specify a target pace (e.g., “run 5K at 6:00 min/km�) or for comparing two workouts of different lengths. Race organizers often list finish times and course distances, so you can quickly see what pace you held and what speed that translates to on a treadmill or a flat road.

How to Read the Result

The pace is the more common metric for runners and walkers—lower is faster. The speed is useful if you think in kilometers per hour, like on a bike or treadmill display. Note that the calculator assumes a constant pace; real-world efforts with hills, stops, or wind will vary. The result is an average, not a measure of your fastest or slowest segment.

Common Mistakes and Unit Mix-Ups

• Entering time in hours instead of minutes. If you run for 1.5 hours, enter 90, not 1.5. The calculator expects minutes.
• Mixing miles and kilometers. If your distance is in miles, convert to km first (1 mile = 1.60934 km) or use a separate miles-based calculator.
• Confusing pace and speed. A 5 min/km pace is 12 km/h, not 5 km/h. The two numbers are not interchangeable.
• Rounding too early. If you round time to the nearest minute and distance to the nearest kilometer, the pace can be off by several seconds. Use the exact numbers you recorded.

Limits of the Formula

The formula assumes a flat, steady effort. It does not account for elevation gain, terrain, weather, or stops. For trail runs or hilly routes, the average pace will understate the effort you put in. Also, the calculator gives a single average—it cannot tell you about pacing strategy (e.g., negative splits) or heart rate zones. For those, you need a GPS watch or a training log that records per-kilometer splits.

Frequently Asked Questions

Is 5 min/km a good pace?

It depends on your fitness and experience. For a recreational runner, 5 min/km (12 km/h) is a moderately fast pace—roughly a 25-minute 5K. For a competitive runner, it might be a slow jog. Use your own recent times as a baseline rather than comparing to strangers.

How do I convert pace to speed in my head?

Divide 60 by the pace in minutes. For example, 6 min/km → 60 ÷ 6 = 10 km/h. Conversely, speed in km/h → 60 ÷ speed = pace in min/km. This works because there are 60 minutes in an hour.

What if I run on a treadmill that shows mph?

Convert mph to km/h by multiplying by 1.60934. Then use the same formula. For example, 6 mph ≈ 9.66 km/h, which is about 6:13 min/km.

Does the calculator work for walking?

Yes. Walking pace is usually between 10 and 20 min/km, and the formula is identical. Just enter your walking time and distance.

Why does the speed output show 12.00 and not 12.0?

The calculator is set to two decimal places for both outputs to keep them consistent. You can ignore the extra zeros; they don’t change the meaning.

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in t | Finish time | min | 50 | 0
in d | Distance | km | 10 | 0
out pace | Average pace | min/km | t / d | 2
out speed | Average speed | km/h | d / (t / 60) | 2