How far is 100 km?
100 kilometers is 62.1 miles — that is like covering a loop around Manhattan twice. Expect about 10 hours of moving time at 10 km/h, or 20 hours at a 5 km/h walking pace.
As a season goal, 100K is ambitious without being unreasonable — spread across a few months it comes out to a very manageable amount each time you head out.
Set your number below and the planner will chart what it takes to get there, working around the days you actually move. The Run Across America app handles the tracking from there.
Step 1: Convert 100 kilometers and set your goal
Whether you think in miles or kilometers, you can figure out about how far you want to go this season with this handy distance converter. Now you know how far 100 kilometers is!
Step 2: Chart your path to 100 kilometers
Now, how will you achieve it? One day at a time. Customize the options to match your week and this planner will map out a steadier path to your goal.
100 kilometers broken down by how often you move
The chart above follows the live season calendar. If you would rather plan against a round number of days, here is what 100 kilometers works out to each time you get moving.
| Plan length | 3 days / week | 5 days / week | 7 days / week |
|---|---|---|---|
| 30 days |
7.7 km
4.8 mi |
4.8 km
3.0 mi |
3.3 km
2.1 mi |
| 60 days |
3.8 km
2.4 mi |
2.3 km
1.4 mi |
1.7 km
1.0 mi |
| 90 days |
2.6 km
1.6 mi |
1.6 km
1.0 mi |
1.1 km
0.7 mi |
100 kilometers: common questions
How many miles is 100 kilometers?
100 kilometers is 62.1 miles.
What does 100 kilometers compare to?
100 kilometers is like covering a loop around Manhattan twice.
How long does it take to cover 100 kilometers?
About 10 hours of moving time at 10 km/h, or 20 hours at a 5 km/h walking pace. Most people spread it across a whole season rather than a single effort.
How far do I need to go each time I get moving to reach 100 kilometers?
Over a 60-day season, moving three days a week, that is about 26 days of 3.8 km (2.4 mi) each. Use the planner on this page to adjust the schedule to your own week.
Good to know
This is an estimate, not a rulebook. Go further than the plan suggests and you'll get there sooner; take a day off and you can make it up later. Nobody is behind.
Does everything count, or just running?
Everything. Walk, bike, hike, swim, push a stroller — if it gets you moving, it counts toward your distance.
Do bonus challenges count toward my goal?
Yes. Bonus challenges pop up throughout the season, and the distance you cover in one counts like any other
activity. The planner above counts the upcoming ones, so the distance it suggests each time you get moving
already allows for them.