Im on a pretty flat 12km (7.5mile) one way trip to work. Once I get out the door I can get there in about 25 minutes on my mountain bike. But I have some Schwalbe Marathons to make the commute a bit faster.

The big factor for me is wind. With it on my tail the ride can be made in 20 minutes. In front, 35-40 minutes depending on severity.

At this distance the biggest factor in the bed to desk travel is the preparation on both ends. getting dressed (bike gear) showers etc...

6 miles with a mountain in the middle - 3o to 40 minutes depending on the shape I'm in.

10km, 25 minutes. All flat, all bike paths :) Got to drop someone today, haven't done that in ages :D

9 miles, 45 minutes to an hour depending on the time of day and traffic.
Yesterday it took me an hour and 20 minutes. I left for work at 12:15 PM. The sun was out and it was ~70F (21C). I just took my time and enjoyed the day. I stopped at a park a few blocks from work and enjoyed the warm sunshine and the solitude for about 10-15 minutes. My kind of day. :beer:

12.4 miles - 38-45 minutes

Takes me about 28-32 minutes to ride 7.8 miles in the morning.
Takes about 25-27 to ride the same in the afternoon.
Add a few minutes each way for a light or two and I probably average about 30 minutes each way total.

Was 17.5 miles in just over 52 min.
Change jobs so now:
3.25 miles in just under 10 min.

same

In the morning: 8 miles, about 35 minutes. In the evening: 8 miles (unless I opt to take a longer route): 40 minutes...this tends to be cause the wind is always in my face on the ride home and it's pretty darn strong.

I was trying to estimate this morning how much time I waste at stop lights, as I hit quite a few of them on my way in. If I hit every single green light, I could easily shave off 5 or 6 minutes. This is of course on the commuter bike (old mountain bike, steel, 40 pounds + gear). When I ride the road bike I'm sure it'll be less (havent done it yet)

9.3 mi, 40-45 min.

My commute to work is just shy of 13 miles and takes about 40min.

The ride home is a little different due to traffic and is a tit-hair longer at just over 14 miles and takes me around 45min.

My winter times: 35 to 45 minutes for my 6.5 mile commute. One big hill.

Spring/summer times: 27.5 to 35 minutes. Depends on the direction (going home is 3 minutes faster), wind and my load.

I was greatly relieved to find my time come down so much when I took off the studs (and the snow melted). I made it home in 29 minutes yesterday and was tickled pink.

I felt like I was slipping or getting worse, when in reality, I was working harder. Kind of funny how that works.:)

4.2 miles one way with a hill at each end. Commute transitions from rural 2 lane road to a small town, 4 lane road with bike lanes. Route takes 12-18 minutes depending on weather, traffic signals & which bike I'm riding. In the Summer, I can choose to detour onto a multi-use path & extend the ride greatly. Don

School:
20km, 50min to an hour, average is 22-23 km/h

Work:
3km, 5 min, average 25 km/h

5m each way, 20-25 mins. Mountainbike with road tyres.

21.5 miles each way.

Ranges from 75-90 minutes depending on the bike and conditions. (On an icy day two weeks ago, it took 2 hours-had to walk the bike for 1.5 miles).

Roughly 850 feet of climbing each way, with the return home about 5-10 minutes faster than the trip inbound.

Doing the trip by car takes 45 minutes minimum. If there are any traffic backups, the trips get a lot closer in time......

Did 7.75 miles in 24:54 last night. That's riding time. Total elapsed time was 30 minutes due to 2 traffic lights.
Normal average speed is between 15 and 16 mph.

I do 5-6 miles in about 40 min. that's with three-four traffic lights.

7.5 miles each way.

22-25 min summer depending on traffic stops, closer to 30 min in the heart of winter thanks to studded tires/snow/ice. Mostly flat, majority MUP.

When I have time I go the opposite way on the MUP loop which connects back up to my regular route, it adds an extra 4 miles, and about 15min.

on the ride into work this morning, 9.46 (mostly flat) miles, 33:06 ride time, probably 40 - 45 minutes actual time with the umpteen lights i have to wait at. probably about the same on the way home. maybe a bit faster if i can suck on to someone's wheel going down san tomas expwy. *hint, hint*

7 miles - 28-30 minutes. touring bike with racks and panniers. I average 13 - 13.5 mph. These guys riding at 18-25 mph are screaming! That's downhill speed for me.

This morning: 47:20 rolling, 48:22 overall. My first time under 50:00 - woohoo :D :D I left home earlier for less traffic, happened to catch several lights green, and detoured .5 mile longer on a MUP instead of the congested arterial freeway overpass.

15 miles each way. About 1:10 total time. Not time the bike is moving. Very traffic dependent. I wonder why commuters are concerned with setting pr's on a work commute. It just leads to silly, risky riding. If you really want to set pr's take up racing.

Why do you assume those riding faster are doing anything risky or unsafe?

6.5 miles, 30 min w/ traffic, lights, detours, etc... (casual goal of 24 min pedalling)