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SF MARATHON 1ST HALF 2026

Naichuan Zhang

Bib: 20327•M•Age: 31

Mountain View, CA

0:00
0:00
/ mi
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Overall
#0 / 6575
Top 42%
Gender (Male)
#0 / 3619
Division (M30-34)
#0 / 772
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
10:05/mi
20:10
→ flat
4M
10:39/mi
41:27
↑ 67↓ 69
6M
10:23/mi
1:02:14
↑ 1231.1%
8M
9:55/mi
1:22:04
↑ 166↓ 531.1%
9.6M
9:55/mi
1:37:56
↑ 68↓ 1931.5%
10M
17:56/mi
1:45:06
↓ 241.1%
10.5M
5:12/mi
1:47:42
↓ 732.7%
12M
12:53/mi
2:07:01
↑ 2803.2%
Finish· 13.11 mi
10:05/mi
2:18:12
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:02:14
Pace10:22 /mi
2nd Half
Distance7.11 mi
Time1:15:58
Pace10:41 /mi
📊Positive Split: 22.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:00:2320:1010:0520:10
10:05
-
4M
4.00 mi07:21:4041:2710:2221:17
10:39
+0:34
6M
6.00 mi07:42:271:02:1410:2220:47
10:23
-0:16
8M
8.00 mi08:02:171:22:0410:1519:50
9:55
-0:28
9.6M
9.60 mi08:18:091:37:5610:1215:52
9:55
0:00
10M
10.00 mi08:25:191:45:0610:317:10
17:56
+8:01
10.5M
10.50 mi08:27:551:47:4210:152:36
5:12
-12:44
12M
12.00 mi08:47:142:07:0110:3519:19
12:53
+7:41
Finish
13.11 mi08:58:252:18:1210:3311:11
10:05
-2:48

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

5:12 /mi

Average Pace

10:33 /mi

Slowest Pace

17:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:36

2% of race

Time at Steady Pace

1:49:07

79% of race

Time at Slower Pace

26:29

19% of race

Average Pace: 10:32 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

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

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
2M
2.00 mi07:00:2320:1010:0520:10
10:05
#3155
4M
4.00 mi07:21:4041:2710:2221:17
10:39
#3484
6M
6.00 mi07:42:271:02:1410:2220:47
10:23
#3324
8M
8.00 mi08:02:171:22:0410:1519:50
9:55
#3000
9.6M
9.60 mi08:18:091:37:5610:1215:52
9:55
#3111
10M
10.00 mi08:25:191:45:0610:317:10
17:56
#3017
10.5M
10.50 mi08:27:551:47:4210:152:36
5:12
#3030
12M
12.00 mi08:47:142:07:0110:3519:19
12:53
#2758
Finish
13.11 mi08:58:252:18:1210:3311:11
10:05
#2759
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 39%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

9:46

Segment Time

10:51/mi

Pace

0.90 mi

Distance

Overall

2570

Men

1776

Division

391

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
2M2.00 mi2.00 mi315521214441831(Top 28%)1318(Top 36%)294(Top 38%)
4M4.00 mi2.00 mi3484-3292308-187467-233757(Top 57%)2451(Top 68%)504(Top 65%)
6M6.00 mi2.00 mi3324+1602230+78464+33143(Top 48%)2137(Top 59%)444(Top 58%)
8M8.00 mi2.00 mi3000+3242076+154436+282290(Top 35%)1671(Top 46%)355(Top 46%)
9.6M9.60 mi1.60 mi3111-1112119-43439-33897(Top 59%)2349(Top 65%)497(Top 64%)
10M10.00 mi0.40 mi3017+942056+63429+102337(Top 36%)1636(Top 45%)351(Top 45%)
10.5M10.50 mi0.50 mi3030-132062-6433-43628(Top 55%)2348(Top 65%)504(Top 65%)
12M12.00 mi1.50 mi2758+2721903+159404+291831(Top 28%)1318(Top 36%)294(Top 38%)
Finish13.11 mi1.11 mi2759-11897+6405-12949(Top 45%)1941(Top 54%)433(Top 56%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 28%
~flat
+5ft-3ft

Overall

1831

Males

1318

M30-34

295

2M→4M

2.0 - 4.0 mi

Top 57%
×4story building
+67ft-69ft

Overall

3757

Males

2451

M30-34

507

4M→6M

4.0 - 6.0 mi

Top 48%
×9story building
+123ft-9ft

Overall

3143

Males

2137

M30-34

446

6M→8M

6.0 - 8.0 mi

Top 35%
×12story building
+166ft-53ft

Overall

2290

Males

1671

M30-34

356

8M→9.6M

8.0 - 9.6 mi

Top 59%
×13story building
+68ft-193ft

Overall

3897

Males

2349

M30-34

498

9.6M→10M

9.6 - 10.0 mi

Top 36%
×2story building
+0ft-24ft

Overall

2337

Males

1636

M30-34

352

10M→10.5M

10.0 - 10.5 mi

Top 55%
×6story building
+1ft-73ft

Overall

3628

Males

2348

M30-34

506

10.5M→12M

10.5 - 12.0 mi

Top 28%
×21story building
+280ft-26ft

Overall

1831

Males

1318

M30-34

295

12M→Finish

12.0 - 13.1 mi

Top 45%
×7story building
+14ft-89ft

Overall

2949

Males

1941

M30-34

433

Passing Analysis

Category:
Athletes Passed
1101*
Passed By
705
Net Change
+396
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#3155
2M → 4M67396-329#3155#3484
4M → 6M19838+160#3484#3324
6M → 8M344*20+324#3324#3000
8M → 9.6M57168-111#3000#3111
9.6M → 10M1039+94#3111#3017
10M → 10.5M518-13#3017#3030
10.5M → 12M28715+272#3030#2758
12M → Finish40*41-1#2758#2759
TOTALS1101*705+396

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

📊

Passing Visuals

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

Race Place Events

Race Place Events