A Rules for Foot Orienteering Events - Orienteering USA

A.19.2.2 The Middle format will be included in the United States Individual
Orienteering Championships event.
A.19.3 Technical Rules
A.19.3.1 MAP: Middle format uses map Scale 1:10,000 with Contours 5m or 2.5m, or
other intervals if explicitly approved by Sanctioning Committee. ISOM
standards apply.
A.19.3.2 TERRAIN SELECTION: Middle course terrain should be very technical, or at
least as technical as possible for a given region. Technical difficulty should be
created by the presence and complexity of details, not the absence of features,
or their lack of definition. Variety in the terrain character and vegetation
conditions is desirable. Suitable terrain for beginner courses must still be
provided.
A.19.3.3 COURSE TYPE: A Middle format course will be a point to point course.
A.19.3.4 COURSE PLANNING: The Middle course should be full of technical
orienteering. Courses shall promote detail intensive navigation and use
technically difficult, but fair, control sites. Variety in the terrain conditions,
leg lengths, and changes in direction are desirable. Route choice is desirable,
but not at the expense of reducing the technical challenge.
A.19.4 Scoring and timing
A.19.4.1 The start interval for middle format will be no less than 2 minutes.
A.19.4.2 The time limit for middle format will be 2 hours
A.19.4.3 WINNING TIME: Winning time for Middle race is 30 – 40min for M/F-21+,
25-35 min for other classes. If part of a multiple-course day, the winning times
for all courses should be reduced to 20 – 30min.
A.19.4.4 Lowest elapsed time determines winner for Middle format races.
A.20 Long/Classic
A.20.1 Definition
A.20.1.1 EMPHASIS: The Long format emphasizes all orienteering skills.
A.20.1.2 COMPETITON: Long format races are individual competitions.
A.20.1.3 The term Classic refers to Long Format courses designed for multiple days of
competition and with corresponding reduced winning times.