Getting your old Garmin rides into a training app: the two routes that work

Why a new Garmin connection starts with an empty history

Our Garmin connection is forward-only. From the moment you connect, each new ride reaches us a few minutes after your Edge or watch syncs to Garmin Connect. Rides recorded before that moment do not come across the connection at all, so on day one a plan sees no training history from Garmin unless you bring it in another way.

That describes our connection, not every app that connects to Garmin. What it means in practice: a rider with five years and two thousand rides in Garmin Connect connects, and the coach sees zero rides until the first new one syncs. The rides are not lost. They sit in your Garmin account, which Garmin describes as yours to access and export through its Account Management Center at any time [Garmin Privacy Policy].

We also read only rides. The connection does not read Garmin's health data, sleep, HRV, Training Status or Training Readiness, and no history route below changes that. Load comes from each ride's own power and heart rate.

None of this blocks a first plan. Three rides from the last six months are enough to start, and a rider with fewer starts from their answers about a typical week. But a plan built from answers is a plan built from what you think you ride, and the real record is worth the ten minutes it takes to bring it across. The wider picture of what each Garmin feature does on a bike, and where the plan layer starts, is in our guide to training with a Garmin as a self-coached cyclist.

Why the last six months matter more than the last six years

A plan needs your recent load to set a safe starting week. Fitness built over years decays within weeks of reduced training [Mujika & Padilla 2000], and the size of the next step only makes sense against the load you carried recently [Gabbett 2016]. Six months of rides answers both questions. A decade adds little the plan uses.

Detraining is fast enough that old rides describe a different rider. In one classic study of trained endurance athletes who stopped, VO2max fell 7% in the first 21 days and settled 16% below its trained value by day 56 [Coyle et al. 1984]. Short breaks of under four weeks already cut VO2max and blood volume in highly trained athletes, with smaller changes in the recently trained [Mujika & Padilla 2000]. A season from three years ago says little about what you can absorb this Tuesday.

Recent load is the anchor that matters. Work on training load separates the last week from the medium term of weeks and months, and points at excessive and rapid increases in load, not hard training as such, as the trouble [Gabbett 2016]. That framework comes from team-sport injury research, but the planning logic carries straight to cycling: a 7-hour week is a step up for a rider averaging 4 and a step down for one averaging 10, and a plan cannot tell which without the rides.

This is why our history window is 180 days for both routes below. It covers a full build and a break, it shows whether you ride 3 days a week or 6, and it is enough to estimate FTP from your real power curve instead of a guess. If you only have the patience to move one season, move the most recent one.

Route one: intervals.icu linked to Garmin Connect

intervals.icu can download historical data from Garmin to build your training history [intervals.icu]. Link Garmin Connect inside intervals.icu, let it pull your rides, then connect intervals.icu to AdaptCycling. We read the last 180 days of Garmin rides from your intervals.icu account, and every new ride after that.

The order is: in intervals.icu, open Settings, then Connections, and link Garmin Connect. Give it time to fill your calendar with past rides; intervals.icu's own fitness chart is the quick check that the history arrived. Then connect intervals.icu from your AdaptCycling account. One grant covers rides in and planned workouts out, and it lasts until you revoke it.

Two limits apply on our side. We read 180 days back, not your whole intervals.icu archive. And we never store a ride that reached intervals.icu from Strava, on any route. A ride that came to intervals.icu from Garmin Connect or another device platform is read; the same ride, if it arrived there only through Strava, is skipped. If your intervals.icu history came in mostly from Strava, the file route below is the one that carries it.

This route is the low-effort one, and it suits riders who already use intervals.icu for analysis. Keep both connections if you like. With Garmin Connect connected directly, workouts reach your Garmin through our direct push to the Garmin Connect calendar, and the intervals.icu push stands down so the same session never lands twice.

Route two: export your Garmin Connect data and upload the files

Garmin gives every account a self-service portal to access and export its data [Garmin Privacy Policy]. In Garmin Connect, open Account, then Data Management, then Export Your Data, and request the export. Then upload the .fit ride files on the Sources page of your AdaptCycling account. This route has no 180-day limit.

Garmin's portal sits behind your Garmin sign-in, so only you can request the export [Garmin Privacy Policy]. It covers your whole account, not just rides. Our uploader takes .fit and .fit.gz files and does not open a .zip, so if the download is an archive, extract it fully and select the .fit files from inside it.

On the Sources page, the Ride file row takes many files at once. Each file can be up to 25 MB, and you can send up to 100 files per hour; if you select more, the earlier files save and the page tells you when to send the rest. Selecting everything is fine: a file that is not a cycling activity, such as a run, is refused with a message rather than stored. A ride more than 48 hours old arrives as history: it counts toward fitness and plan completion without each one triggering a post-ride review.

Start with the most recent rides. Your newest 3 make the first plan possible, and the last 180 days do most of the work described above. Very old rides recorded in other formats, such as .gpx or .tcx, will not upload; only .fit files carry the power and heart-rate detail the plan needs, so this costs little.

Quick answers

Sources cited in this guide

1. 01
   Garmin Privacy Policy. Garmin Privacy Policy. Garmin.
2. 02
   intervals.icu. Intervals.icu: training analysis and planning. intervals.icu.
3. 03
   Mujika & Padilla 2000. Detraining: loss of training-induced physiological and performance adaptations. Part I: short term insufficient training stimulus. Sports Medicine.
4. 04
   Coyle et al. 1984. Time course of loss of adaptations after stopping prolonged intense endurance training. Journal of Applied Physiology.
5. 05
   Gabbett 2016. The training-injury prevention paradox: should athletes be training smarter and harder?. British Journal of Sports Medicine.

More inside Training with a Garmin

Other articles in this series

1. 01

   How to send a training plan to a Garmin Edge

   TrainingPeaks, TrainerRoad, JOIN, intervals.icu and Garmin's own builder: how far ahead each sends workouts and what happens when the plan changes.

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2. 02

   Garmin FTP auto-detect vs the guided test: which to trust

   What Garmin's FTP estimate, guided test and auto-detect each measure, when each drifts, and how to turn auto-detect off.

   →
3. 03

   Garmin Unproductive status for cyclists: what to ride next

   Why Garmin says Unproductive while you get fitter on the bike, and four rules for what to ride next.

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4. 04

   Garmin Edge training plans: every option compared

   Garmin Cycling Coach, suggested workouts, TrainerRoad, TrainingPeaks or AdaptCycling on a Garmin Edge: what each needs, how it adapts, what it costs.

   →
5. 05

   Garmin workout not showing on your Edge or watch? The causes

   Why a planned workout misses your Garmin Edge or watch: device sync, the service's window, unsent workout types and the import permission.

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6. 06

   Garmin Cycling Coach without a power meter: what you get

   What a heart-rate-only cyclist gets from a Garmin, what needs a power meter, and how to train well on heart rate zones alone.

   →