Pick your league. Drop the field on the grass with your phone. Walk out and place every bag.
Step 01 · Pick your league
Which field are we building?
Bases60 ft
Mound46 ft
Every distance runs from the back point of home plate. No tape? A big step is about 3 ft.
Step 02 · See it on the grass
Drop the field. Walk it. Place the bags.
Stand behind home plate. Tap Open in AR.
Point at the grass and move the phone slowly until the field drops in.
Drag the red home pole onto the back point of home plate.
Twist with two fingers until the thin gold line points at second base.
Walk out. Put a bag at each gold pole and the rubber at the orange pole.
Red pole: back point of home plate. Every distance starts here.
Gold poles: 1st, 2nd, 3rd. 1st and 3rd poles mark the outside back corner of the bag.
Orange pole and ring: front edge of the rubber or pitching plate.
iPhone or iPad. Uses the AR viewer built into your phone, the same one behind Apple's Measure app. Run the tape on one base before you trust the rest. Nothing is recorded and nothing leaves your phone.
Field is up
Now play.
Bases down, kids running. Small-sided games teach the skill for you.
Little League International, Field Specifications. Minors and Majors baseball 60 ft bases and 46 ft pitching. Intermediate 50/70 uses 70 ft bases and 50 ft pitching as its local option. Junior and up 90 ft and 60 ft 6 in. Softball 60 ft bases at every level, 35 ft Minors, 40 ft Majors, 43 ft Junior and Senior. Tee Ball 60 ft, with 50 ft as a local option.
NFHS high school rules. Baseball 90 ft and 60 ft 6 in. Fastpitch softball 60 ft and 43 ft.
Travel baseball (9U to 13U). 65/46, 70/50, and 80/54 are common travel distances. They change by organization, host, and year. Not checked against one rulebook. Flagged uncertain. Use the host's rules.
8U softball. Little League Minors softball uses 35 ft. Many rec and travel leagues use 30 ft at 8U. Flagged uncertain. Pick Custom if your league differs.
Base placement. In the official rules diagram, first and third bags sit inside the lines in fair territory, and second base is centered on its point. Check your league book.
AR view. Uses Apple AR Quick Look and the phone's motion tracking. The model is drawn at true size from the back point of home plate. Tracking can drift over long walks and on plain grass with little texture. Accuracy across a full field has not been measured. Flagged uncertain. Check with a tape. DugoutLab build.
Mound and circle rings. Ring sizes are approximate: 5 ft radius for Little League and teen mounds, 9 ft for the full-size mound, 8 ft for the softball pitching circle. Rubber 18 by 4 in on smaller fields, 24 by 6 in on full size and softball. Check your league book.