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SF MARATHON 1ST HALF 2026

Donovan Carlson

Los Altos Hills, CA

Bib: 12460 M 18

0:00
0:00
/ mi
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Overall
#0 / 6575
Top 0.5%
Gender (Male)
#0 / 3619
Top 1.0%
M19 & Under
#0 / 81
Top 12%
Race Day Weather
59°/49°F
scattered clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
10 ft elev
2M
5:47/mi
11:35
→ flat
12 ft elev
4M
5:51/mi
23:16
↑ 67↓ 69
10 ft elev
6M
5:15/mi
33:46
↑ 1231.1%
126 ft elev
8M
5:15/mi
44:16
↑ 166↓ 531.1%
246 ft elev
9.6M
4:27/mi
51:23
↑ 68↓ 1931.5%
126 ft elev
10M
11:21/mi
55:55
↓ 241.1%
90 ft elev
10.5M
3:12/mi
57:31
↓ 732.7%
18 ft elev
12M
14:30/mi
1:19:16
↑ 2803.2%
272 ft elev
Finish· 13.11 mi
9:03/mi
1:29:18
↑ 14↓ 891.3%
205 ft elev
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6M
33:465:38 /mi⚡ faster
2nd Half
55:327:49 /mi+64.5%
Positive split — 64.5% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
2M
11:355:472.00 mi11:35
5:47
-
4M
23:165:492.00 mi11:41
5:51
+0:04
6M
33:465:382.00 mi10:30
5:15
-0:36
8M
44:165:322.00 mi10:30
5:15
0:00
9.6M
51:235:211.60 mi7:07
4:27
-0:48
10M
55:555:360.40 mi4:32
11:21
+6:54
10.5M
57:315:290.50 mi1:36
3:12
-8:09
12M
1:19:166:361.50 mi21:45
14:30
+11:18
Finish(13.11 mi)
1:29:186:491.11 mi10:02
9:03
-5:27
Trend:
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoints & Pacing

Pace Line

Fastest Pace

3:12 /mi

Average Pace

6:49 /mi

Slowest Pace

14:30 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:36

2% of race

Time at Steady Pace

51:23

58% of race

Time at Slower Pace

36:19

41% of race

Average Pace: 6:49 /mi

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Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi3.3mi6.6mi9.8mi13.1mi
Pace:
Faster
Steady
Slower
Featured Segment

Garmin Challenge

Top 0.3%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

6:08

Segment Time

6:49/mi

Pace

0.90 mi

Distance

Overall

23

Men

23

Division

7

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM19 & UnderSeg. OverallSeg. MalesSeg. M19 & Under
2M2.00 mi12823160205162
4M2.00 mi11+17+121172
6M2.00 mi9+25+21+1951
8M2.00 mi951951
9.6M1.60 mi7+23+21731
10M0.40 mi8-14-1168429
10.5M0.50 mi84126268
12M1.50 mi35-2729-257-63160205162
Finish(13.11 mi)1.11 mi36-136-710-31685123945

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 48%
~flat
+5ft-3ft

Overall

3160

Males

2051

M15-19

53

2M→4M

2.0 - 4.0 mi

Top 0.2%
×4story building
+67ft-69ft

Overall

11

Males

7

M15-19

2

4M→6M

4.0 - 6.0 mi

Top 0.1%
×9story building
+123ft-9ft

Overall

9

Males

5

M15-19

1

6M→8M

6.0 - 8.0 mi

Top 0.1%
×12story building
+166ft-53ft

Overall

9

Males

5

M15-19

1

8M→9.6M

8.0 - 9.6 mi

Top 0.1%
×13story building
+68ft-193ft

Overall

7

Males

3

M15-19

1

9.6M→10M

9.6 - 10.0 mi

Top 1%
×2story building
+0ft-24ft

Overall

68

Males

42

M15-19

9

10M→10.5M

10.0 - 10.5 mi

Top 0.4%
×6story building
+1ft-73ft

Overall

26

Males

26

M15-19

8

10.5M→12M

10.5 - 12.0 mi

Top 48%
×21story building
+280ft-26ft

Overall

3160

Males

2051

M15-19

53

12M→Finish

12.0 - 13.1 mi

Top 26%
×7story building
+14ft-89ft

Overall

1685

Males

1239

M15-19

38

Passing Analysis

Category:
Passed
19*
Passed By
43
Net Change
-24
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#12
2M → 4M10+1#12#11
4M → 6M31+2#11#9
6M → 8M000#9#9
8M → 9.6M20+2#9#7
9.6M → 10M01-1#7#8
10M → 10.5M000#8#8
10.5M → 12M027-27#8#35
12M → Finish13*14-1#35#36
TOTALS19*43-24

* Includes athletes who did not complete a segment (DNF/DNQ).

Passing Charts

Category:
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Passing Circle

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Position Flow

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Race Lanes

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