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SF MARATHON 1ST HALF 2026

Justin Chu

San Mateo, CA

Bib: 17910 M 45

0:00
0:00
/ mi
Masters
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Overall
#0 / 6575
Gender (Male)
#0 / 3619
Masters (Masters Men)
#0 / 1030
Division (M45-49)
#0 / 220
Race Day Weather
59°/49°F
scattered clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
12:28/mi
24:56
→ flat
4M
13:58/mi
52:51
↑ 67↓ 69
6M
14:39/mi
1:22:10
↑ 123
8M
15:36/mi
1:53:23
↑ 166↓ 53
9.6M
11:17/mi
2:11:26
↑ 68↓ 193
10.26M
16:13/mi
2:22:08
↓ 114
10.5M
13:46/mi
2:25:26
→ flat
12M
20:01/mi
2:55:27
↑ 280
Finish· 13.11 mi
14:17/mi
3:11:17
↑ 14↓ 89
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6M
1:22:1013:42 /mi⚡ faster
2nd Half
1:49:0715:21 /mi+32.8%
Positive split — 32.8% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
2M
24:5612:282.00 mi24:56
12:28
-
4M
52:5113:132.00 mi27:55
13:58
+1:30
6M
1:22:1013:422.00 mi29:19
14:39
+0:41
8M
1:53:2314:102.00 mi31:13
15:36
+0:57
9.6M
2:11:2613:411.60 mi18:03
11:17
-4:19
10.26M
2:22:0813:510.66 mi10:42
16:13
+4:56
10.5M
2:25:2613:510.24 mi3:18
13:46
-2:27
12M
2:55:2714:371.50 mi30:01
20:01
+6:15
Finish(13.11 mi)
3:11:1714:361.11 mi15:50
14:17
-5:44
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

11:17 /mi

Average Pace

14:36 /mi

Slowest Pace

20:01 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

42:59

22% of race

Time at Steady Pace

1:16:22

40% of race

Time at Slower Pace

1:11:56

38% of race

Average Pace: 14:35 /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 90%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

14:00

Segment Time

15:34/mi

Pace

0.90 mi

Distance

Overall

5947

Men

3346

Division

194

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
2M2.00 mi6213351020561533427205
4M2.00 mi6363-1503560-50210-564023568210
6M2.00 mi6386-233563-3208+263883570209
8M2.00 mi6411-253576-13211-363643558214
9.6M1.60 mi6373+383561+1521152803042164
10.26M0.66 mi6359+143552+9212-159923364201
10.5M0.24 mi6362-3355221260143389207
12M1.50 mi6335+273540+1221261533427205
Finish(13.11 mi)1.11 mi6311+243531+921260433375196

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 94%
~flat
+5ft-3ft

Overall

6153

Males

3427

M45-49

205

2M→4M

2.0 - 4.0 mi

Top 97%
×4story building
+67ft-69ft

Overall

6402

Males

3568

M45-49

210

4M→6M

4.0 - 6.0 mi

Top 97%
×9story building
+123ft-9ft

Overall

6388

Males

3570

M45-49

209

6M→8M

6.0 - 8.0 mi

Top 97%
×12story building
+166ft-53ft

Overall

6364

Males

3558

M45-49

214

8M→9.6M

8.0 - 9.6 mi

Top 80%
×13story building
+68ft-193ft

Overall

5280

Males

3042

M45-49

164

9.6M→10.26M

9.6 - 10.3 mi

Top 91%
×9story building
+0ft-114ft

Overall

5992

Males

3364

M45-49

201

10.26M→10.5M

10.3 - 10.5 mi

Top 91%
~flat
+1ft-0ft

Overall

6014

Males

3389

M45-49

207

10.5M→12M

10.5 - 12.0 mi

Top 94%
×21story building
+280ft-26ft

Overall

6153

Males

3427

M45-49

205

12M→Finish

12.0 - 13.1 mi

Top 92%
×7story building
+14ft-89ft

Overall

6043

Males

3375

M45-49

196

Passing Analysis

Category:
▼Net Change
0
0 passed by0* passed
SegmentMovementRank
Start → 2M-#6213
2M → 4M
17727*-150
#6213 → #6363
4M → 6M
5734*-23
#6363 → #6386
6M → 8M
5934*-25
#6386 → #6411
8M → 9.6M
1250*+38
#6411 → #6373
9.6M → 10.26M
822+14
#6373 → #6359
10.26M → 10.5M
63-3
#6359 → #6362
10.5M → 12M
835*+27
#6362 → #6335
12M → Finish
630*+24
#6335 → #6311
TOTALS
333235*-98
#6213 → #6311

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

Passing Visualized

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

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