Should I book buses in advance or wing it?

Wing it. Book buses 1-2 days ahead maximum, same-day is often fine except during holidays (Christmas, Easter, local festivals). The flexibility to stay longer somewhere or skip a place entirely is worth more than advance booking discounts.

How do I handle altitude sickness on this route?

Ascend gradually when possible. Fly into Cusco but spend 2-3 days there before Machu Picchu. Take the bus to La Paz rather than flying - the gradual ascent helps. Carry diamox (altitude sickness medication) and stay hydrated. Coca tea helps with mild symptoms.

What's the minimum time for a meaningful overland trip?

6-8 weeks minimum for the Pacific coastal route (Colombia to Chile), spending 4-5 days in major stops. Anything shorter and you'll spend more time traveling than experiencing places. The full continental loop needs 3-4 months minimum.

How much cash should I carry?

Always carry $500-1000 USD cash. Many rural areas and border crossings don't accept cards. US dollars are widely accepted. Avoid damaged bills - they're often rejected. Exchange for local currency in major cities where rates are better.

How to plan an overland route through South America

Plan your South America overland route by choosing either the Pacific coast (Colombia to Chile, 2-4 months) or a continental loop (3-6 months including Brazil and Argentina). Book buses as you go rather than in advance, budget $40-70 per day, and plan around dry season (May-September) for easier mountain crossings.

Choose your route backbone. Pick either the Pacific Spine (Colombia → Ecuador → Peru → Bolivia → Chile, 2-3 months) or the Continental Loop (add Brazil, Argentina, Uruguay, Paraguay, 4-6 months). The Pacific route follows the Andes and ancient trade routes. The loop covers more diverse landscapes but requires more border crossings.
Map your border crossings. Identify your crossing points early. Popular crossings: Ipiales (Colombia-Ecuador), Aguas Verdes (Ecuador-Peru), Desaguadero (Peru-Bolivia), San Pedro de Atacama (Bolivia-Chile). Research visa requirements for each country. Some nationalities need visas for Brazil or Bolivia in advance.
Plan around seasons and elevation. Time high-altitude sections (Bolivia, Peru mountains) for dry season (May-September). Wet season makes some routes impassable. Plan Patagonia for October-March (summer). The Amazon is accessible year-round but drier months (June-November) have fewer mosquitoes.
Build your transportation strategy. Use buses for 80% of travel - South America has excellent bus networks. Book same-day or 1-2 days ahead except during holidays. Budget airlines work for long jumps (Lima-Buenos Aires). Avoid booking entire route in advance - you'll want flexibility for weather and personal pace changes.
Set your base cities and side trips. Choose 3-5 base cities where you'll stay 4-7 days each: Quito/Cusco/La Paz/Santiago are natural stops. Plan day trips and 2-3 day excursions from these bases (Machu Picchu from Cusco, Uyuni from La Paz). This prevents constant packing while covering ground efficiently.

Should I book buses in advance or wing it?: Wing it. Book buses 1-2 days ahead maximum, same-day is often fine except during holidays (Christmas, Easter, local festivals). The flexibility to stay longer somewhere or skip a place entirely is worth more than advance booking discounts.
How do I handle altitude sickness on this route?: Ascend gradually when possible. Fly into Cusco but spend 2-3 days there before Machu Picchu. Take the bus to La Paz rather than flying - the gradual ascent helps. Carry diamox (altitude sickness medication) and stay hydrated. Coca tea helps with mild symptoms.
What's the minimum time for a meaningful overland trip?: 6-8 weeks minimum for the Pacific coastal route (Colombia to Chile), spending 4-5 days in major stops. Anything shorter and you'll spend more time traveling than experiencing places. The full continental loop needs 3-4 months minimum.
How much cash should I carry?: Always carry $500-1000 USD cash. Many rural areas and border crossings don't accept cards. US dollars are widely accepted. Avoid damaged bills - they're often rejected. Exchange for local currency in major cities where rates are better.