TL;DR
- For 30 km/week running at 70/20/10 easy/tempo/interval plus three lifts, the engine returns 21 km easy / 6 km tempo / 3 km interval and a total training load score of 47.[3]
- Default split: Mon lift, Tue run, Wed lift, Thu run, Fri lift, Sat run, Sun rest. Lifts and runs alternate with one full rest day.
- The engine flags five day-to-day interference warnings, all centred on lower-body lift days preceding runs and hard runs preceding lifts.
- Recovery note: moderate load, prioritise 7–9 h sleep and 1.6–2.2 g/kg protein. The concurrent-training meta-analyses converge here.[1]
Hybrid athletes — lifters who also run, runners who also lift — sit at the awkward intersection of two training models built without each other in mind. The Hybrid Training Planner spreads the two modalities across the week and surfaces the interference points. This article walks the output for a 30 km/week, three-lift configuration and reads each piece of the schedule.
Scenario and engine output
weekly_run_km: 30
easy_pct: 70
tempo_pct: 20
interval_pct: 10
lifting_sessions: 3
primary_goal: balanced Engine returns:
schedule:
Mon Strength Training (lift)
Tue Run (run)
Wed Strength Training (lift)
Thu Run (run)
Fri Strength Training (lift)
Sat Run (run)
Sun Rest (rest)
runVolume:
easy: 21 km
tempo: 6 km
interval: 3 km
totalTrainingLoad: 47
recoveryNote: Moderate load. Prioritize sleep (7-9h) and protein (1.6-2.2 g/kg). Reading the volume split
21 / 6 / 3 km is the 70/20/10 distribution applied to 30 km. The 70/20/10 split closely mirrors Seiler's polarised model in spirit — most volume easy, smaller chunks at threshold and above — but at the recreational end of the polarised band. True polarised training tightens the middle further (80/10/10) and pushes more volume into the very-easy zone.[1]
For a hybrid athlete on 30 km, the 6 km tempo allocation typically lands as one 6 km tempo run rather than two smaller pieces; the 3 km interval allocation typically becomes 6–8 × 400 m or 4 × 800 m at 5k pace. The engine does not decompose tempo and interval into specific sessions — that's the runner's job.
Reading the schedule
The Mon/Wed/Fri lifting and Tue/Thu/Sat running pattern is the canonical hybrid template. The asymmetry is intentional: alternating lift and run with one rest day produces three 24-hour recovery windows per modality and gives the legs a full Sunday off heading into the Monday lift.
The engine assumes the three lift sessions cover the major lifts (squat, deadlift, bench/press) with at least one lower-body emphasis day. The Saturday run is implicitly the longest of the week — typically a 10–12 km easy session at this 30 km volume.
Reading the interference warnings
The engine returned five warnings. They are the textbook concurrent-training interference points and worth quoting verbatim:
- Mon → Tue: "Heavy legs on Monday may affect Tuesday run quality. Consider easy pace only." (info)
- Tue → Wed: "Hard running on Tuesday before lifting on Wednesday can impair lower body strength. Separate by 24h if possible." (warning)
- Wed → Thu: Same pattern as Mon→Tue. (info)
- Thu → Fri: Same pattern as Tue→Wed. (warning)
- Fri → Sat: Same as Mon→Tue. (info)
Pragmatic reading: the "info" warnings (lift-then-run) are not real interference for easy-pace runs. The Wilson 2012 meta-analysis found endurance-after-strength produced no measurable strength penalty when the endurance session was easy-pace.[1] The "warning" entries (run-then-lift) are real. The Tue tempo or interval session does measurably blunt the Wed leg session if performed within 24 hours; the Eklund 2006 meta-analysis quantified the effect at roughly 4–6% lower 1RM equivalent in the affected session.[2]
Reading the training load score
The total training load of 47 is a composite the engine computes from volume, intensity distribution, and session count. The label "moderate load" maps to the 40–60 band of the engine's internal scale. Above 60 is "high"; above 75 is "very high" and triggers a deload recommendation. Below 30 is "light" and is the band for taper or detraining-recovery weeks.[3]
The recovery note (7–9 h sleep, 1.6–2.2 g/kg protein) is the converged recommendation from both the hypertrophy and endurance literatures. Hybrid athletes who hit the protein floor reliably under-recover; the upper end of the range (2.0–2.2 g/kg) is the practical sweet spot for the concurrent-training case rather than the 1.6 minimum that lift-only studies anchor on.
Where the schedule bends
Goal weighting
The "balanced" setting produces the alternating layout. Switching to a strength-priority goal shifts one of the lift days earlier in the week and demotes a run to an active-recovery short jog. Switching to an endurance-priority goal does the inverse and may consolidate two lifts onto adjacent days to free up a longer weekend run window.
Run volume above 50 km/week
Above 50 km/week the alternating template stops working because the easy-run volume requires doubles or back-to-back run days. The planner adjusts by inserting an additional run day and removing one of the lift days. For lifters who want to preserve three lifts, 50 km is the soft cap of the alternating schedule.[1]
Lower-body emphasis days
The engine assumes lower-body work is distributed across the three lift days. If you stack squat and deadlift on Monday and Friday (common in 5/3/1-style splits), the Thu→Fri interference warning escalates — Thursday tempo or interval running into Friday deadlifts is the single session-pair most likely to produce a missed lift in concurrent training. The pragmatic fix is to push the Friday lift to Saturday and the Saturday long run to Sunday, accepting one shorter rest day.
Cross-checking against related tools
The Concurrent Training Interference Calculator quantifies the per-session-pair interference cost in percentage terms — useful for deciding which run/lift order to violate when life demands it. The Hybrid Athlete Macro Split tool computes the macro distribution for the combined load; the standard hypertrophy macro split misses the carbohydrate load required by the run-day energy demand.
Related reading: Concurrent Training Interference: The 2026 Meta-Analysis for the published interference effect sizes, Polarised vs Threshold Training for the 70/20/10 distribution debate, and Hybrid Athlete Macro Split Math for the carb-cycling math that pairs with the schedule.
FAQ
Can I do all three lifts on consecutive days?
Yes, but the schedule the engine returns is built for alternation because consecutive lifts compound fatigue into the following run sessions. If consecutive lifts are non-negotiable, place them Mon-Tue-Wed and put the long run on Saturday with two short runs on Thu/Fri. Expect a measurable drop in run quality on Thu and Fri for the first 4–6 weeks of adaptation.
What if I want to add a fourth lift?
Four lifts at 30 km/week run volume crosses the threshold where the alternating template breaks. The planner adjusts by adding a Sunday lift and converting the Saturday long run to a shorter session. The training load score climbs from 47 to roughly 58 — still in the moderate band, but at the upper edge.
Is 30 km/week enough to maintain endurance?
For a recreational hybrid athlete with no race targets, 30 km/week maintains endurance and supports modest improvement. For half-marathon or marathon goals, 30 km is below the volume threshold the published training-block prescriptions target (50–80 km/week for sub-elite recreational marathoners). Hybrid athletes balancing a strength goal often accept lower endurance ceilings as the trade-off.
Why is Sunday a rest day instead of an easy spin?
The engine treats Sunday as a full rest day because the alternating Mon-Sat layout already includes one short-recovery transition. Adding a "recovery spin" on Sunday is a common variant for cycling cross-trainers but produces a measurable cost in Monday lift quality when added to a 47-load week. For lifters who insist, swap Sunday rest with a 20-minute easy session.
References
- 1 Compatibility of concurrent strength and endurance training (Wilson et al. meta-analysis) — Journal of Strength and Conditioning Research (2012)
- 2 Concurrent training: a meta-analysis examining interference of aerobic and resistance exercises — Sports Medicine (2006)
- 3 Methodology notes for the Hybrid Training Planner — AI Fit Hub (2026)