100 mi bike ride running equivalent?

There are people who can go on a flat 100 mile bike ride who probably couldn't run a mile. So an equivalent could be a long walk.

1 mile of running = 6.85 miles of cycling

obviously assumes conditions and route are same or similar

1mi of running about 8min per mi

6.85mi cycling at 18mph almost 23min

so 8min of running = 23min of cycling?

At the same heart rates, my calories burned are the same whether cycling or running. I definitely burn more calories on the bike. (if the equivalent is kilojoules or calories burned). In the tour or long distance cycling events, those riders are consuming 100+ grams of carbs per hour because the burn!

if you want to go based on time, the general proportion is 2.618 : 1 for cycling : running

Haven't we been through this before?

Every 1 mile of biking = 0 miles of running. If we extrapolate that out to 100 the

Binge watching your favorite TV show for 6 hours.

I would be very surprised if you were burning the same calories at the same HR running or cycling. Running is metabolically significantly more taxing at the same HR because it involves many more muscle groups actively.

Then swimming would burn more than both running and cycling since it uses the most muscles and cardio is through the roof per my heart monitor

Even if we assume it’s entirely flat, windless conditions, this sort of equivalence is still unhelpful. Equipment and positioning on a bike make a large difference. I’ve even seen people apply these 1/4 or 1/6 mileage equivalencies to cross training on gym bikes, where I haven’t the faintest clue how they calculate “speed”. If you want to compare, you need to use time.

This is a tough question to answer. Simple answer is probably a two hour run. It’s something most people don’t do, but if you’ve worked up to it gradually, it’s manageable for most. On the other hand, it’s a standard daily training load for a professional, the same way the century is on the bike.

In general I'd say half marathon

but like others said many cyclists do the equivalent of walking that half marathon

When I bonk I'd compare the experience to a poorly run marathon

It is 4-5 miles of cycling to 1 mile of running unless it's super hilly. Call it a 20-miler.

There’s no equivalent. You cannot sustain the same power output running vs cycling for as long because impact damage to the muscles.

You can always cycle for longer periods than you can run at equivalent intensities.

The equivalent would be a 4-7 hour run but most people cannot maintain a reasonable training pace due to impact stress on their muscles.

22 miler

walking 26.2 miles. you have to be fit to do it, but it's not as impressive as it looks

walking 26.2 miles. you have to be fit to do it, but it's not as impressive as it looks

"The running equivalent of biking 100 miles depends on several factors, including speed, intensity, terrain, and the effort required for each activity. However, a general approximation is based on the fact that running typically burns more calories and requires more effort per mile than biking.
A commonly used comparison is that for every 1 mile of cycling, it takes about 3 to 4 miles of running to match the effort.
So, for 100 miles of cycling, the equivalent running distance would be around:
300 to 400 miles of running.
This is just an approximation, and the exact comparison can vary based on your individual fitness level, bike speed, running pace, and terrain."

Image:i.ibb.co/6RvN8QF/IMG-57185893434.png

Skiing does a little more.

So AI is the future but certainly not the present.