30K Trail Running Training Plan: From 20K to Ultra-Distance

30K Trail Running Training Plan: From 20K to Ultra-Distance

A 12-week program to take on 30K, with 1200 to 1800 m of elevation gain

Prepare my 30K

30K is a pivotal distance in trail running: you've already finished a 20K trail or a road half marathon, and now you want a real step up. With 1200 to 1800 m of elevation gain depending on the course, effort time jumps from 1h30-2h30 to 3-5 hours — it's not just farther, it's a different challenge for energy management, nutrition and muscle fatigue on technical descents. This 12-week plan, with 4 sessions per week, progressively builds your ability to handle elevation, run efficiently on rolling terrain, and manage fueling over a longer effort.

Pourquoi choisir RunRun ?

12 weeks, 4 sessions a week

An automatically generated RunRun plan structured in 4 phases: base, development, race-specific and taper, with volume and elevation progression adapted to your level.

Progressive elevation, monitored load

From 400 to 1300 m of elevation gain per week at peak. RunRun tracks your acute:chronic workload ratio (ACWR) to adjust intensity and prevent overload.

The real jump: from 2 to 5 hours of effort

30K isn't just "a longer 20K": effort time goes from 1h30-2h30 to 3-5 hours. This plan specifically prepares you for that extended duration, not just the extra distance.

Nutrition and hydration tested in real conditions

Every long run is a chance to rehearse your fueling strategy (carbs, hydration) before it becomes decisive on race day.

Built-in recovery weeks and targeted strength work

Recovery weeks are scheduled into the plan, paired with strength training (quads, calves, core) to absorb technical descents.

Full tracking: pace, heart rate zones, personal bests

Log every session in your training journal, check your heart rate zones and pace, and track your personal records. Automatic Strava sync, manual FIT/TCX export to your Garmin watch.

30K trail plan — 12 weeks / 4 sessions

S1

Week 1 — Restarting and transitioning from 20K

Build aerobic foundations and re-condition your legs to elevation after a 20K trail or road half marathon.

  • Tuesday: 45 min easy run on rolling trails
  • Thursday: 40 min with 6×2 min uphill (jog down recovery)
  • Saturday: 30 min strength training (core, squats, calves)
  • Sunday: Long run 1h30 on trail with 400 m elevation
S4

Week 4 — First elevation block and nutrition testing

Introduce more demanding long runs and start testing your fueling strategy.

  • Tuesday: 50 min easy run with hill surges
  • Thursday: 45 min with 6×3 min sustained climb (descent recovery)
  • Saturday: 35 min strength (proprioception, eccentric squats)
  • Sunday: Long run 2h15 on trail with 700 m elevation — fuel every 30-40 min
S8

Week 8 — 30K-specific block

Sessions close to race conditions, managing effort over 3+ hours.

  • Tuesday: 55 min easy rolling run
  • Thursday: 1h with 30 min continuous climb alternating power hiking and running
  • Saturday: 30 min strength focused on quads/calves
  • Sunday: Long run 3h on trail with 1100 m elevation — practice aid stations and technical descent
S11

Week 11 — Peak volume

Last big week before the taper. The longest and most elevation-heavy run of the plan.

  • Tuesday: 1h easy rolling run
  • Thursday: 55 min with 25 min climb + fast technical descent
  • Saturday: 20 min light strength
  • Sunday: Long run 3h45 on trail with 1500 m elevation — test full race gear
S12

Week 12 — Taper + race

Volume cut in half, intensity maintained. Arrive fresh and confident at the start line.

  • Monday: 35 min easy run on trail
  • Wednesday: 25 min with 4×30s hill accelerations
  • Friday: 20 min easy jog + gear check
  • Saturday/Sunday: Race day — your 30K!

Tips to succeed on your 30K trail

1

Rehearse your fueling before you need it

Over 3 to 5 hours of effort, start fueling within the first 45 minutes: 60-90g of carbs per hour (gels, bars, dried fruit), and drink regularly (500-750ml/hour depending on heat). Test everything during long runs.

2

Master your downhill technique

Short quick steps, torso slightly forward, eyes ahead. Technical descents are where a 30K breaks quads that haven't been trained for it — practice on real trails, not just flat roads.

3

Decide on poles before race day

Not mandatory, but useful above 1500 m of elevation gain or on sustained climbs. Poles relieve your legs uphill and stabilize technical descents. Train with them if you plan to race with them.

4

Pace your climbs economically

Beyond a certain gradient, power hiking is more efficient than running. Learn to switch to a fast hike on steep sections — it saves energy for the rest of the race.

5

Check your gear before the start

Broken-in trail shoes, hydration vest, weather-appropriate layers. Nothing new on race day — test everything during your long runs.

Questions fréquentes

How do I move up from a 20K to a 30K trail?

The main change is effort duration (3-5h vs 1h30-2h30) and elevation volume. Progressively extend your long runs up to 3-4 hours and add more elevation gain, while keeping your training load in check with ACWR monitoring. Having finished a 20K trail or road half marathon is a solid base to build from.

How much elevation gain should I train for a 30K trail?

Between 1200 and 1800 m depending on the course, sometimes more in mountain terrain. In training, aim for a weekly elevation progression from 400 up to 1300 m at peak load.

What should I eat and drink during a 30K trail?

Over 3 to 5 hours of effort, start fueling within the first 45 minutes: 60-90g of carbs per hour (gels, bars, dried fruit), and drink regularly — 500-750ml per hour depending on heat. Test everything during your long training runs.

How many sessions per week do I need to prepare a 30K?

The RunRun plan uses 4 sessions a week: two shorter midweek runs (one with elevation), one strength session, and a long run on the weekend. That's a good balance between progression and recovery for an amateur runner.

Do I need trekking poles for a 30K trail?

Not mandatory, but useful above 1500 m of elevation gain or on sustained climbs. Poles relieve your legs uphill and improve balance on technical descents. Train with them beforehand if you plan to use them.

Prepare your 30K trail with RunRun

Set your 30K goal on RunRun and get a personalized training plan adapted to your target elevation, level and availability.

Prepare my 30K