If you are reading this in April, you have time to summit a 14er this summer.
The math works out, as long as you start now and match your peak choice to the time you actually have instead of the time you wish you had.
The Four Training Windows
Different 14ers need different amounts of preparation, and different April timelines lead to different peaks.
6 to 8 Weeks: Achievable with the Right Peak
If you are already active and comfortable walking for 60 to 90 minutes at a brisk pace, six to eight weeks of focused training can get you to the summit of one of Colorado's most forgiving 14ers.
Coming in, you need a base of regular cardio, healthy joints, and no significant injuries.
Over those weeks, you need to build sustained uphill endurance and the ability to carry a 10 to 15 pound pack for 5 to 6 hours.
10 to 12 Weeks: The Sweet Spot for Most Beginners
Ten to twelve weeks is enough time to take someone with a modest fitness base and prepare them for a 14er with more mileage or elevation gain. Most people starting in April are working with this window for a late July or early August summit.
You have time to build a real aerobic base, practice loaded hiking, and complete at least two multi-hour training days before your trip.
13 to 16 Weeks: The Full Build
Sixteen weeks gives you the most room for gradual progression and recovery weeks. If you are starting from a lower fitness level or have had previous injuries, the extra time matters. A late July or August summit is still easily within reach.
The 13-week training plan is designed for this scenario: a structured week-by-week program that builds from short walks to summit-ready conditioning.
Under 6 Weeks: Not the Summer for a 14er
If you have fewer than six weeks and are starting from scratch, this summer is probably not your year. Use the extra time to plan a fall or next-summer trip and build the right base.
Rushed training is how people get hurt on the mountain, so give yourself the time to prepare properly.
Match Your Timeline to a Peak
Your training window determines which tier of peaks is realistic.
Tier 1: 6 to 8 Weeks of Training
These peaks have clear trails, moderate mileage, and manageable elevation gain. Quandary and Sherman are Class 1. Bierstadt is Class 2 because of a short boulder section below the summit, but a trail still leads all the way up. All three are the right starting point for anyone who needs to be summit-ready in under two months.
Best picks:
- Mount Bierstadt: The route is 7.25 miles round trip with 2,850 feet of gain. The well-maintained trail is excellent for beginners, and the Guanella Pass trailhead at 11,669 feet gives you a head start on elevation.
- Quandary Peak: The route is 6.75 miles round trip with 3,450 feet of gain. Quandary is one of the most popular beginner 14ers in the state, with a clear trail and minimal navigation required.
- Mount Sherman: The route is 5.25 miles round trip with 2,100 feet of gain. Sherman is the shortest and lowest-gain option on this list and the ideal pick if your timeline is tight.
Tier 2: 10 to 12 Weeks of Training
These peaks have more mileage, more elevation gain, or a bit more trail complexity than Tier 1. They are still beginner-friendly but reward the extra weeks of preparation.
Best picks:
- Grays Peak via the standard route: The route is 7.5 miles round trip with 3,000 feet of gain. You can tag Torreys the same day once you are comfortable with Grays, which brings the day to 8.25 miles and 3,600 feet.
- San Luis Peak: The route is 13.5 miles round trip with 3,600 feet of gain. It is long but entirely non-technical, and it suits people who want a wilderness experience instead of a crowded trail.
Tier 3: 13 to 16 Weeks of Training
Tier 3 peaks have longer mileage, more elevation gain, or remote trailheads with rough access roads. They are still within reach for a well-prepared beginner, but they demand the full build.
Best picks:
- Handies Peak: The route from the American Basin trailhead is 5.75 miles round trip with 2,500 feet of gain. The numbers are modest, but the last stretch of road requires four-wheel drive or all-wheel drive. Parking at the bottom of that road stretches the hike to 7.75 miles and 2,800 feet. Handies has outstanding views in the San Juan range that are worth every extra week of training.
- Sunshine Peak: The standard route is 12.25 miles round trip with 4,800 feet of gain. It climbs over Redcloud Peak on the way to Sunshine, so you summit two 14ers in one day.
An April-to-August Training Calendar
The table below lays out a 16-week build that starts in early April and targets a late July or August summit.
| Weeks | Phase | Focus |
|---|---|---|
| 1 to 4 | Base building | Three to four days per week of cardio, 30 to 45 minutes. Add one day of stairmaster or incline treadmill. |
| 5 to 8 | Load introduction | Add a light pack (10 pounds) to two sessions per week. Extend one weekly session to 60 to 90 minutes. |
| 9 to 12 | Volume peak | Stairmaster sessions at 45 to 60 minutes. One long day of 2 to 3 hours with a 15 to 20 pound pack. Hill repeats twice per week. |
| 13 to 15 | Maintenance | Hold fitness, reduce volume by 20 percent. Continue one long day per week. |
| Week 16 | Taper | Cut volume in half. Keep one moderate session. Arrive in Colorado rested. |
The full 13-week training plan covers the first three phases in detail as its Foundation, Build, and Peak phases, with specific workouts for each week. If you are starting in April for an August summit, you can run the full 13 weeks and still have a buffer week before your trip.
When to Book the Trip
Booking the trip stalls people more than any other decision, because they wait until they feel ready. People who wait for that feeling often never book.
Book the trip now. Having a fixed summit date is the most effective training motivator you have. When you know the date, every session has a deadline attached to it.
If you are targeting early August, book your flights and accommodations before the end of April. Late July and August weekends at popular 14er campgrounds fill up faster than most people expect.
What About Arriving Early for Acclimatization?
For sea-level residents, plan to arrive in Colorado at least two full days before summit day. Three days is better.
Spend your first day resting at Denver's elevation (5,280 feet). On Day 2, drive to a campground or town above 9,000 feet and take a short hike. This acclimatization time matters more than any single training session in the weeks before the trip.
The sea-level training guide covers the full acclimatization protocol, including hydration schedules and altitude sickness warning signs.
Start This Week
April is an ideal time to start.
Pick your tier, choose a peak, and start the first week of training. The 13-week plan is built for exactly this moment. You can run through Week 1 this week and be sixteen weeks into a real training build before your trip.