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SF MARATHON 2026

Bolei Zhou

Bib: 10177•M•Age: 39

Los Angeles, CA

0:00
0:00
/ mi
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Overall
#0 / 7166
Gender (Male)
#0 / 5052
Division (M35-39)
#0 / 717
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
2M
22:07
Rank: #5934
Start → 2M
22:07 | 11:03/mi
4M
44:54
Rank: #6002 (-68)
2M → 4M
22:47 | 11:24/mi
6M
1:07:22
Rank: #5825 (+177)
4M → 6M
22:28 | 11:14/mi
8M
1:30:34
Rank: #5966 (-141)
6M → 8M
23:12 | 11:36/mi
9.6M
1:54:29
Rank: #6354 (-388)
8M → 9.6M
23:55 | 14:57/mi
10M
1:57:27
Rank: #6317 (+37)
9.6M → 10M
2:58 | 7:26/mi
10.5M
2:05:06
Rank: #6234 (+83)
10M → 10.5M
7:39 | 15:18/mi
12M
2:21:47
Rank: #6118 (+116)
10.5M → 12M
16:41 | 11:07/mi
14M
2:47:14
Rank: #6052 (+66)
12M → 14M
25:27 | 12:43/mi
16M
3:10:43
Rank: #6079 (-27)
14M → 16M
23:29 | 11:44/mi
18M
3:34:11
Rank: #5868 (+211)
16M → 18M
23:28 | 11:44/mi
20M
3:57:12
Rank: #5731 (+137)
18M → 20M
23:01 | 11:30/mi
22M
4:18:27
Rank: #5573 (+158)
20M → 22M
21:15 | 10:37/mi
24M
4:41:03
Rank: #5348 (+225)
22M → 24M
22:36 | 11:18/mi
Finish· 26.22 mi
5:04:34
Rank: #5146 (+202)
24M → Finish
23:31 | 10:36/mi

Course Map & Elevation

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Half Splits

1st Half· via 14M
Distance14.00 mi
Time2:47:14
Pace11:57 /mi
2nd Half✓ Faster
Distance12.22 mi
Time2:17:20
Pace11:14 /mi
📊Negative Split: 17.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi05:56:1522:0711:0322:07
11:03
-
4M
4.00 mi06:19:0244:5411:1422:47
11:24
+0:21
6M
6.00 mi06:41:301:07:2211:1422:28
11:14
-0:10
8M
8.00 mi07:04:421:30:3411:1923:12
11:36
+0:22
9.6M
9.60 mi07:28:371:54:2911:5623:55
14:57
+3:21
10M
10.00 mi07:31:351:57:2711:452:58
7:26
-7:31
10.5M
10.50 mi07:39:142:05:0611:557:39
15:18
+7:52
12M
12.00 mi07:55:552:21:4711:4916:41
11:07
-4:11
14M
14.00 mi08:21:222:47:1411:5725:27
12:43
+1:36
16M
16.00 mi08:44:513:10:4311:5523:29
11:44
-0:59
18M
18.00 mi09:08:193:34:1111:5423:28
11:44
0:00
20M
20.00 mi09:31:203:57:1211:5223:01
11:30
-0:14
22M
22.00 mi09:52:354:18:2711:4521:15
10:37
-0:53
24M
24.00 mi10:15:114:41:0311:4322:36
11:18
+0:41
Finish
26.22 mi10:38:425:04:3411:3723:31
10:36
-0:42

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

7:26 /mi

Average Pace

11:37 /mi

Slowest Pace

15:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:58

1% of race

Time at Steady Pace

4:04:35

80% of race

Time at Slower Pace

57:01

19% of race

Average Pace: 11:37 /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...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
2M
2.00 mi05:56:1522:0711:0322:07
11:03
#5934
4M
4.00 mi06:19:0244:5411:1422:47
11:24
#6002
6M
6.00 mi06:41:301:07:2211:1422:28
11:14
#5825
8M
8.00 mi07:04:421:30:3411:1923:12
11:36
#5966
9.6M
9.60 mi07:28:371:54:2911:5623:55
14:57
#6354
10M
10.00 mi07:31:351:57:2711:452:58
7:26
#6317
10.5M
10.50 mi07:39:142:05:0611:557:39
15:18
#6234
12M
12.00 mi07:55:552:21:4711:4916:41
11:07
#6118
14M
14.00 mi08:21:222:47:1411:5725:27
12:43
#6052
16M
16.00 mi08:44:513:10:4311:5523:29
11:44
#6079
18M
18.00 mi09:08:193:34:1111:5423:28
11:44
#5868
20M
20.00 mi09:31:203:57:1211:5223:01
11:30
#5731
22M
22.00 mi09:52:354:18:2711:4521:15
10:37
#5573
24M
24.00 mi10:15:114:41:0311:4322:36
11:18
#5348
Finish
26.22 mi10:38:425:04:3411:3723:31
10:36
#5146
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Garmin Challenge
Featured Segment

Garmin Challenge

The climb, presented by Garmin

Top 71%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

10:37

Segment Time

11:48/mi

Pace

0.90 mi

Distance

Overall

5112

Men

3812

Division

539

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM35-39Seg. OverallSeg. MalesSeg. M35-39
2M2.00 mi2.00 mi593443576005291(Top 74%)3934(Top 78%)547(Top 76%)
4M4.00 mi2.00 mi6002-684393-36597+36033(Top 84%)4411(Top 87%)604(Top 84%)
6M6.00 mi2.00 mi5825+1774279+114586+115638(Top 79%)4168(Top 83%)571(Top 80%)
8M8.00 mi2.00 mi5966-1414368-89601-156394(Top 89%)4667(Top 92%)656(Top 91%)
9.6M9.60 mi1.60 mi6354-3884600-232640-396993(Top 98%)4955(Top 98%)694(Top 97%)
10M10.00 mi0.40 mi6317+374580+20638+24865(Top 68%)3682(Top 73%)515(Top 72%)
10.5M10.50 mi0.50 mi6234+834525+55633+55373(Top 75%)3974(Top 79%)559(Top 78%)
12M12.00 mi1.50 mi6118+1164468+57623+105291(Top 74%)3934(Top 78%)547(Top 76%)
14M14.00 mi2.00 mi6052+664420+48618+55781(Top 81%)4236(Top 84%)600(Top 84%)
16M16.00 mi2.00 mi6079-274426-66186024(Top 84%)4355(Top 86%)620(Top 86%)
18M18.00 mi2.00 mi5868+2114297+129604+144205(Top 59%)3156(Top 62%)446(Top 62%)
20M20.00 mi2.00 mi5731+1374200+97589+154346(Top 61%)3199(Top 63%)463(Top 65%)
22M22.00 mi2.00 mi5573+1584088+112578+113861(Top 54%)2846(Top 56%)405(Top 56%)
24M24.00 mi2.00 mi5348+2253933+155558+203148(Top 44%)2328(Top 46%)333(Top 46%)
Finish26.22 mi2.22 mi5146+2023802+131540+183003(Top 42%)2222(Top 44%)321(Top 45%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 74%
×1human
+6ft-11ft

Overall

5291

Males

3934

M35-39

550

2M→4M

2.0 - 4.0 mi

Top 84%
×4stories
+75ft-70ft

Overall

6033

Males

4411

M35-39

611

4M→6M

4.0 - 6.0 mi

Top 79%
×5stories
+71ft-18ft

Overall

5638

Males

4168

M35-39

578

6M→8M

6.0 - 8.0 mi

Top 89%
×9stories
+106ft-21ft

Overall

6394

Males

4667

M35-39

661

8M→9.6M

8.0 - 9.6 mi

Top 98%
×13stories
+117ft-177ft

Overall

6993

Males

4955

M35-39

699

9.6M→10M

9.6 - 10.0 mi

Top 68%
×1story
+17ft-12ft

Overall

4865

Males

3682

M35-39

518

10M→10.5M

10.0 - 10.5 mi

Top 75%
×9stories
+0ft-102ft

Overall

5373

Males

3974

M35-39

562

10.5M→12M

10.5 - 12.0 mi

Top 74%
×18stories
+304ft-125ft

Overall

5291

Males

3934

M35-39

550

12M→14M

12.0 - 14.0 mi

Top 81%
×9stories
+99ft-125ft

Overall

5781

Males

4236

M35-39

602

14M→16M

14.0 - 16.0 mi

Top 84%
×9stories
+124ft-78ft

Overall

6024

Males

4355

M35-39

621

16M→18M

16.0 - 18.0 mi

Top 59%
×8stories
+106ft-45ft

Overall

4205

Males

3156

M35-39

447

18M→20M

18.0 - 20.0 mi

Top 61%
×3stories
+52ft-26ft

Overall

4346

Males

3199

M35-39

464

20M→22M

20.0 - 22.0 mi

Top 54%
×21stories
+17ft-266ft

Overall

3861

Males

2846

M35-39

406

22M→24M

22.0 - 24.0 mi

Top 44%
×3stories
+70ft-85ft

Overall

3148

Males

2328

M35-39

333

24M→Finish

24.0 - 26.2 mi

Top 42%
~flat
+2ft-2ft

Overall

3003

Males

2222

M35-39

321

Passing Analysis

Category:
Athletes Passed
1748*
Passed By
960
Net Change
+788
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#5934
2M → 4M114*182-68#5934#6002
4M → 6M20932+177#6002#5825
6M → 8M37*178-141#5825#5966
8M → 9.6M16*404-388#5966#6354
9.6M → 10M370+37#6354#6317
10M → 10.5M896+83#6317#6234
10.5M → 12M13014+116#6234#6118
12M → 14M92*26+66#6118#6052
14M → 16M75*102-27#6052#6079
16M → 18M212*1+211#6079#5868
18M → 20M142*5+137#5868#5731
20M → 22M164*6+158#5731#5573
22M → 24M226*1+225#5573#5348
24M → Finish205*3+202#5348#5146
TOTALS1748*960+788

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

📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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