Task and zones
The declared task drawn with start line, turnpoint sectors and cylinders, against the track you actually flew.
IGC viewer, thermal map and glider polars
Open your flight in the online IGC viewer, explore recorded climbs on the thermal map and compare glider performance. Review your soaring flights with interactive charts and detailed reports.
The original IGC and report remain private to this browser session until removed or the session expires.
1,183,618
thermals on the map
Based on 45,913 accepted IGC files and stored live OGN observations across 418 flying days.
1,397
sailplanes in the polar database
1,696 configurations, 778 of them with a calculated model polar.
162,231
turnpoints in 76 countries
Alongside 20,878 airspaces covering 92 countries.
See the whole system before you upload anything
Seven screens, one place. Flight analysis, thermal maps, the polar database and live traffic.
IGC viewer and flight analysis
Every original IGC fix is kept in the analysis — nothing is thinned out to make the charts draw faster.
Barogram over terrain
Pressure altitude against ground elevation, with terrain context throughout the flight.
Vario and climb rate
Barometric vario for the whole flight, with each climb measured and timed.
Ground and air speed
Ground speed and estimated true airspeed, with wind context along the flight.
Thermals
Every detected climb, with average lift, height gain and time spent.
Glides
Each glide with its distance along the track, speed and achieved L/D.
Circling
Turn by turn: radius, estimated bank angle, direction and drift, shown as ground track or air mass.
Estimated wind
A velocity-circle fit during complete turns, plus a wind profile in 200 m pressure-altitude bands.
Phase timeline
Thermals, glides and failed attempts laid out on one timeline you can zoom into.
Supporting the gliding community
Help your pilots get more from every flight. Clubs, federations, competition and event organisers can apply for our coupon support; we review each request.
- Member coupons with 3 Full Report credits and 20% off report credit packages.
- For competitions, unlimited Full Reports for eligible flights, with separate participant and organiser coupons.
- A shareable coupon code, QR code and personalised A4/A3 posters after approval.
Compact
Pilot, glider and task, the map, the barogram and the headline numbers — the version you send to a friend after a good day.
Full
Everything above plus circling detail, the wind profile, glide and climb statistics and the phase timeline — the version you go through with a coach.
Both reports export to A4 PDF. Explore the charts in detail and save them as PNG or SVG.
Thermal map
Explore detected climbs from recorded IGC flights. Filter by day, week or month; colour is average lift, and the histograms show climb rate and height gain for the current view.
Open the thermal map →
Glider polars and performance comparison
1,397 sailplane records and 1,696 configurations, 778 of them with a calculated model polar. Put up to five aircraft on the same axes: sink rate, glide ratio and final glide.
Compare polars →
Live traffic and live thermals
Follow gliders with altitude, vario, ground speed, tracks and a replay timeline. Live Thermal Map shows thermals detected from OGN traffic over the last 30 or 60 minutes. Follow published competition and practice tasks with their classes and contestants. The live thermal layer is available with active thermal map access.
Open OGN Live →
The story behind your trace.
Find the lift you missed.
Compare your trace with mapped thermals to spot climbs you may have passed.
Every flight tells a story.
Follow the climbs, glides and decisions that shaped your day, point by point.
The landing completes the picture.
Revisit the final glide and arrival to understand how the flight ended.
Ready to look at your last flight properly?
Nothing to upload yet? Explore reports from the latest shared flights.