# Train 4 Ultra > Adaptive ultramarathon training plans. An athlete enters their race, their > current fitness and the days they can actually run; Train 4 Ultra builds a > week-by-week plan and adjusts the nearest three weeks when they review and > confirm a weekly check-in, using their check-ins and logged training. Train 4 Ultra is a web application at https://train4ultra.com/ — it is aimed at runners preparing for distances beyond the marathon — 50K, 50-mile, 100K and 100-mile road and trail races. ## What the plan is built from The athlete supplies the race name, date, distance and elevation gain, a target finish time, their current weekly volume and longest recent run, which days of the week they can train, their preferred long-run day, experience level (beginner, intermediate or advanced) and maximum heart rate. Course technicality, aid-station spacing and fuelling carbohydrate targets are set for race-day strategy. A GPX file of the course can be uploaded to derive the elevation profile. ## How the plan works Each plan runs in phases sized to the weeks available: Foundation, Aerobic Base, Volume Build, Ultra Development, Race Specific, Peak and Taper. Every week has a distance and elevation target, one long run, and sessions placed only on days the athlete said they are available, with heart-rate zone guidance per session. Training adapts through weekly check-ins. The athlete reports fatigue and average perceived effort. Check-ins and logged training guide adjustments to the nearest three weeks, which the athlete previews and confirms. Past training and logged sessions stay as recorded. Sessions are marked completed or skipped, which produces an adherence score measured against sessions that have already come due. Athletes can invite friends to a shared plan and see each other's completed sessions. The training schedule is shared, while training load is personalized to each runner's fitness. A race-strategy view produces pacing and fuelling guidance from the course profile. ## Pricing New accounts get 28 days free without a payment card. Continued access costs 49 NOK per month if the user chooses to subscribe. Subscriptions renew monthly and can be cancelled online. Payment is handled by Stripe. ## Homepages and readable product information - [English homepage](https://train4ultra.com/): Product, pricing, shared plans and frequently asked questions. - [Norwegian homepage](https://train4ultra.com/no/): The same product information in Norwegian Bokmål. - [Product overview in Markdown](https://train4ultra.com/product.md): This readable product overview. - [Produktoversikt på norsk](https://train4ultra.com/no/produkt.md): Norwegian product facts in Markdown. ## Documentation - [Complete EcoTrail 80 km example plan](https://train4ultra.com/no/eksempelplan-ecotrail-80-km): An explicitly fictional Norwegian example generated by the production planner. All weeks and workout instructions are readable without an account or JavaScript. Includes actual adjustments after a difficult example week. - [How Train 4 Ultra builds a plan](https://train4ultra.com/no/slik-lages-treningsplanen): Norwegian explanation of progression, long runs, terrain, rest, check-ins and limitations. Planning heuristics are not independently validated coaching. - [Norwegian races](https://train4ultra.com/norske-ultralop): Norwegian race entrances for EcoTrail Oslo 80 km, Nøsen Hundreds 50/100 km, Norefjell Trail 42 km (a mountain marathon), UltraBirken 60 km, Romeriksåsen på langs 50 km, Lysefjorden Inn 62 km, Lofoten Ultra-Trail 48/88/162 km, Hornindal Rundt 38/75 km, Hardangerjøkulen Ultra 95 km, Skogvokteren Ultra 88 km, Meråker Mountain Challenge 50/70/100 km and Nordmarka Skogsmaraton Ultra 63.3 km (mainly gravel road). Each page links to a Norwegian plan setup with organizer-sourced race details and a preloaded GPX profile. Course years and unconfirmed dates are disclosed. Train 4 Ultra is independent of the organizers. The full app journey supports Norwegian Bokmål and English, including accounts, plan review, workouts, check-ins, training logs and race strategy. - [Norsk ordliste](https://train4ultra.com/no/ordliste): Norwegian training terms. - [Hvorfor ultra](https://train4ultra.com/no/hvorfor-ultra): Norwegian guide to motivation, health and responsible preparation. - [Tid til ultratrening](https://train4ultra.com/no/hvor-lenge-trene-til-ultra): Norwegian guide to planning preparation for different race distances. - [How long does it take to train for an ultramarathon](https://train4ultra.com/how-long-to-train-for-an-ultra): training timelines for 50K, 50-mile, 100K and 100-mile races from a base and from scratch; why bone remodelling and tendon adaptation rather than aerobic fitness set the length of a build; and why the 10% rule for increasing weekly mileage has no evidence behind it. Cites primary literature. - [Why train for an ultramarathon](https://train4ultra.com/why-ultra): the motivation, health evidence, mental benefits, training process and real risks of running beyond a marathon. Covers time on feet, course specificity, run–hike decisions and recovery. - [Ultramarathon training glossary](https://train4ultra.com/glossary): plain-English definitions of ultra training vocabulary — session types, effort and load measures including RPE and heart-rate zones, and planning terms such as taper, peak week and long run. ## Notes for agents The public homepages, race pages and guides are readable without JavaScript or an account. Creating a plan and using the interactive training tools requires JavaScript. Saving and sharing training data requires a signed-in account; an athlete's plan and training log are private and are not reachable without their credentials. There is no public API. The documentation and race pages above are static HTML and are the authoritative readable description of the product. Use the canonical URLs listed here when citing the service. Race information is independent of the organizers and should be checked against the organizer links. Training suggestions do not replace individual medical advice or a coach.