Guide
Race Strategy: your course, turned into decisions
What Race Strategy is, what it does under the hood and what you walk away with on race day: paces, point-by-point weather, fuelling, kit, cut-offs and a dossier.
8 min read
Blog
Blog
Guides, route breakdowns and comparisons to get more out of your GPX files.
Guide
What do I carry to the next aid station (and why grams per hour won't tell you)
Grams per hour are a physiological target, not a plan. What you actually decide mid-race is what fits in the vest until the next point.
7 min read
Guide
How to analyse your race GPX before you line up
An updated, step-by-step guide to analysing your next race's GPX before you line up, using the tools TrackLAB gives you today.
8 min read
Guide
RouteLAB and BioCenter: the route and your body, explained
TrackLAB's two core tools: RouteLAB breaks down the route, BioCenter works out what that route will do to your body.
6 min read
Guide
Slopes, Climbs and Zones: how to read an elevation profile properly
Three layers over the same chart: gradients, categorised climbs and altitude bands. What each one shows and when to use it.
5 min read
Guide
How to Install TrackLAB on Your Phone as a Real App
Turn TrackLAB into a real app on your iPhone or Android in under 30 seconds. No app store, no download, almost no storage used.
9 min read
Guide
How to Import Suunto Routes Straight into TrackLAB
Import Suunto routes into TrackLAB from a URL, with no files to download. How it works, which links are supported and how to fix the common errors.
6 min read
Guide
How to Export Your GPX from Garmin and Suunto and Analyse It in TrackLAB
Step-by-step guide to exporting GPX files from Garmin Connect, Suunto, Polar, Coros and Wahoo, ready to analyse in TrackLAB.
8 min read
Guide
What heat really costs you in an ultra (and why the average lies)
We reviewed the evidence on heat and endurance performance and found a blunt error that almost every pace calculator makes. With the numbers.
9 min read
Comparison
Strava vs TrackLAB: What Does Each One Tell You About Your Route?
We compare Strava and TrackLAB on GPX route analysis: metrics, planning, pro tools and price. Which one is right for you?
6 min read
Guide
How to Analyse Your First GPX: A Complete Guide for Runners and Cyclists (2026)
Learn to read a GPX file: real distance, elevation gain (D+), elevation profile, pace and advanced metrics. A step-by-step guide with TrackLAB.
8 min read
Route analysis
Transvulcania: from sea level to 2,426 m in 74 km
Full GPX analysis of the Transvulcania: 74 km from sea level to 2,426 m. Real profile, segment strategy, kit and estimated times by level.
12 min read
Route analysis
UTMB: full course analysis, 171 km and 10,040 m D+
Full analysis of the UTMB Ultra-Trail du Mont-Blanc: 171 km, 10,040 m D+ around Mont Blanc. Real profile, key climbs, strategy and finish times.
14 min read
Route analysis
TDS by UTMB: The Most Technical Race on the UTMB Circuit, Analysed
Technical analysis of the TDS by UTMB: 153 km through remote Italian and French mountains. Segment strategy, real difficulty and how it differs from UTMB.
13 min read
Route analysis
OCC by UTMB: analysis of the 55 km Alpine course
Technical analysis of the OCC by UTMB: 55 km across the Alps from Switzerland into France. Real profile, key climbs, kit and race strategy.
10 min read
Route analysis
Spain's 4 hardest trail races, analysed with GPX data
Spain's four hardest trail races analysed with real GPX data. TrackLAB difficulty index, elevation gain and what each one has in store.
11 min read
Route analysis
Gran Trail Sobrarbe: A Technical Breakdown of the Route, the Elevation and the Key Climbs
A full breakdown of the Gran Trail Sobrarbe: 68 km through the Aragonese Pyrenees with 3,330 m D+. Real profile, kit, target times and DNF mistakes.
11 min read
Guide
Estimated Time in Trail Running: How to Work It Out From Your Real Level
How to work out your finish time in trail running: Naismith's rule calibrated with UTMB 2025 data, speeds by level, and how to avoid going out too fast.
9 min read
Comparison
Transgrancanaria Classic: course analysis and GPX elevation profile
A GPX breakdown of Transgrancanaria before you run it: 125 km, 8,500 m D+, the crux sections, kit and a full fuelling strategy.
13 min read
Route analysis
CCC by UTMB: a full breakdown of the route and its key climbs
A full breakdown of the CCC by UTMB: 101 km and 6,100 m D+ across Italy, Switzerland and France. Key climbs, sector strategy and target times.
11 min read
Guide
Elevation in trail running: what D+ and D− mean and how they affect you
What D+ and D− really mean in trail running, a quick difficulty guide by elevation gain, and why the descents hurt far more than you'd expect.
7 min read