Race Pace Calculator

Enter any pace and see what it means across every race distance, from a 1K to a full marathon.
Flip it around and enter your goal finish time instead, and it hands you back the pace you need to hold.

Run With Cip — Pace Calculator

EXPECTED PACE
5:30min/km
MIN/MI
8:51
DistanceFinish Time

Work Out the Pace You Need

Enter a distance and your goal finish time — I'll tell you the pace you need to hold.

REQUIRED PACE
4:58min/km
MIN/MI
7:59

Pace Percentage Calculator

Race Pace Percentage
Base pace
5:00
min/mi8:03
3:007:3012:00
Effort percentage
100%
50%100%150%
Adjusted pace
5:00
min/mi8:03
km/h
12.0
mph
7.5

Training plans love percentages, like running 93% of marathon pace for a workout.
Set your base pace, pick the percentage, and get the exact pace and speed you should be hitting.

Heat and Humidity Pace Calculator

Hot, sticky days slow everyone down, and that is normal, not a sign you are losing fitness.
Add today's temperature and humidity and see what your pace really equals in ideal conditions, so you can judge the effort fairly and train smart in the heat.

Pace Adjustments for Heat and Humidity
Pace in these conditions
7:00
min/km4:21
3:007:3012:00
Conditions
80°F temperature
50% humidity
Equivalent effort in ideal conditions
6:49
min/km4:14
These conditions are costing you about 2.7% off your ideal-conditions pace.
These numbers are an estimate based on temperature and humidity alone. Heat acclimatization, hydration, and individual tolerance all affect how you actually respond to heat, so use this as a rough guide rather than an exact target, and dial back or reschedule sessions on extreme heat days.

GAP Pace Calculator

Hills change everything. This tool takes your pace on a climb or descent and shows you what it actually equals on flat ground, so you can judge a hilly effort fairly instead of chasing a number that was never realistic to begin with.

Grade Adjusted Pace
Actual pace
5:30
min/mi8:51
3:007:3012:00
Average grade
0.0%
-25%0%+25%
Grade adjusted pace
5:00
min/mi8:02
This grade takes about the same effort as 5:00/km on flat ground.

Fueling Calculator

Every run burns through carbs, not just race day. Enter your distance, pace, and how many carbs you want per hour, and this tells you exactly how many gels to carry and roughly how often to take one, whether it's a long training run or the big event itself.

Fueling Calculator
Pace (per km)
Target carbs per hour
60g / hour
20g70g120g
Gels needed
7gels
Race time
2:56:00
Total carbs
176 g
One gel every
25 min