Commute with fewer missed connections

See if your transfer is realistic before you leave home.

HopGap turns station distances, walking speeds, and schedules into a clear transfer window. It flags risky links, suggests a safer buffer, and lets you save the route for tomorrow.

Open the planner See example routes

3 presets for walking speed
3 risk levels with clear advice
Printable route cards

Transfer planner

Add each leg of your journey. HopGap will estimate the transfer window at every connection point and tell you if the link is safe, tight, or risky.

Walking speed

Custom speed meters per minute

Safety buffer

Extra minutes added to every transfer. Use more for rush hour or unfamiliar stations.

Buffer minutes

Accessibility note

Wheelchair and stroller users often need longer at elevators and ramps. Turn this on to add 2 extra minutes per transfer.

Add accessibility buffer

Route name

Leg 1

From Mode Depart Frequency

Leg 2

Transfer at Walk distance m Mode Depart Frequency

Leg 3

To Walk distance m Mode Depart Frequency

Example routes

These show the kind of advice HopGap gives. Load one to see how the numbers change.

Saved routes

Saved locally in this browser. Nothing leaves your device.

No saved routes yet. Build one above and press Save route.

What the risk levels mean

Safe: At least 4 minutes to spare after walking. You can miss the planned service and likely catch the next one.
Tight: One to four minutes to spare. Workable on a good day, but any delay will probably break the link.
Risky: Less than one minute or already negative. Rework the route or add a bigger buffer.

Common mistakes

Ignoring the walk between far apart platforms.
Forgetting elevator wait times at big stations.
Using the same plan for rush hour and midday.
Assuming buses and trains always arrive on time.
Leaving no buffer for a rainy day.

A note on the numbers

HopGap uses the walking speed you pick, the distance you enter, and the schedule you give. It does not know about escalator outages, roadworks, or today's crowd. Treat the output as a planning guide, not a promise. Add extra time for important trips. If your transfer is marked tight and you cannot afford to miss it, plan the earlier service instead.