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BOSTON MARATHON 2023

Yunfeng Zhao

Bib: 13208•M

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 39%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 43%
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:53
Rank: #11326
Start → 5K
23:53 | 7:41/mi
10K· 6.21 mi
47:13
Rank: #10906 (+420)
5K → 10K
23:20 | 7:31/mi
15K· 9.32 mi
1:10:48
Rank: #10894 (+12)
10K → 15K
23:35 | 7:35/mi
20K· 12.43 mi
1:34:39
Rank: #10838 (+56)
15K → 20K
23:51 | 7:41/mi
Half· 13.11 mi
1:39:53
Rank: #10890 (-52)
20K → Half
5:14 | 7:40/mi
25K· 15.53 mi
1:58:41
Rank: #10816 (+74)
Half → 25K
18:48 | 7:45/mi
30K· 18.64 mi
2:23:23
Rank: #10698 (+118)
25K → 30K
24:42 | 7:57/mi
20M
2:34:15
Rank: #10657 (+41)
30K → 20M
10:52 | 8:00/mi
21M
2:42:44
Rank: #10608 (+49)
20M → 21M
8:29 | 8:29/mi
35K· 21.75 mi
2:48:40
Rank: #10614 (-6)
21M → 35K
5:56 | 7:56/mi
23M
2:58:52
Rank: #10614
35K → 23M
10:12 | 8:09/mi
24M
3:06:39
Rank: #10557 (+57)
23M → 24M
7:47 | 7:47/mi
40K· 24.85 mi
3:13:28
Rank: #10507 (+50)
24M → 40K
6:49 | 7:58/mi
25.2M
3:16:23
Rank: #10482 (+25)
40K → 25.2M
2:55 | 8:27/mi
Finish· 26.22 mi
3:24:05
Rank: #10379 (+103)
25.2M → Finish
7:42 | 7:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:53
Pace7:37 /mi
2nd Half
Distance13.11 mi
Time1:44:12
Pace7:57 /mi
📊Positive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:3523:537:4123:53
7:41
-
10K
6.21 mi11:15:5547:137:3623:20
7:31
-0:10
15K
9.32 mi11:39:301:10:487:3623:35
7:35
+0:04
20K
12.43 mi12:03:211:34:397:3723:51
7:41
+0:06
Half
13.11 mi12:08:351:39:537:375:14
7:40
-0:01
25K
15.53 mi12:27:231:58:417:3818:48
7:45
+0:05
30K
18.64 mi12:52:052:23:237:4224:42
7:57
+0:12
20M
20.00 mi13:02:572:34:157:4310:52
8:00
+0:03
21M
21.00 mi13:11:262:42:447:458:29
8:29
+0:29
35K
21.75 mi13:17:222:48:407:455:56
7:56
-0:33
23M
23.00 mi13:27:342:58:527:4710:12
8:09
+0:13
24M
24.00 mi13:35:213:06:397:477:47
7:47
-0:22
40K
24.85 mi13:42:103:13:287:476:49
7:58
+0:11
25.2M
25.20 mi13:45:053:16:237:482:55
8:27
+0:29
Finish
26.22 mi13:52:473:24:057:477:42
7:33
-0:54

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

7:31 /mi

Average Pace

7:47 /mi

Slowest Pace

8:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:41

94% of race

Time at Steady Pace

11:24

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:47 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:52:3523:537:4123:53
7:41
#11326
10K
6.21 mi11:15:5547:137:3623:20
7:31
#10906
15K
9.32 mi11:39:301:10:487:3623:35
7:35
#10894
20K
12.43 mi12:03:211:34:397:3723:51
7:41
#10838
Half
13.11 mi12:08:351:39:537:375:14
7:40
#10890
25K
15.53 mi12:27:231:58:417:3818:48
7:45
#10816
30K
18.64 mi12:52:052:23:237:4224:42
7:57
#10698
20M
20.00 mi13:02:572:34:157:4310:52
8:00
#10657
21M
21.00 mi13:11:262:42:447:458:29
8:29
#10608
35K
21.75 mi13:17:222:48:407:455:56
7:56
#10614
23M
23.00 mi13:27:342:58:527:4710:12
8:09
#10614
24M
24.00 mi13:35:213:06:397:477:47
7:47
#10557
40K
24.85 mi13:42:103:13:287:476:49
7:58
#10507
25.2M
25.20 mi13:45:053:16:237:482:55
8:27
#10482
Finish
26.22 mi13:52:473:24:057:477:42
7:33
#10379
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi113268809880910921(Top 41%)8610(Top 57%)8610(Top 382%)
10K6.21 mi3.10 mi10906+4208614+1958614+19510522(Top 40%)8440(Top 56%)8440(Top 375%)
15K9.32 mi3.11 mi10894+128604+108604+1010921(Top 41%)8610(Top 57%)8610(Top 382%)
20K12.43 mi3.11 mi10838+568562+428562+4210714(Top 40%)8435(Top 56%)8435(Top 375%)
Half13.11 mi0.68 mi10890-528593-318593-3111542(Top 43%)8855(Top 58%)8855(Top 393%)
25K15.53 mi2.42 mi10816+748543+508543+5010715(Top 40%)8351(Top 55%)8351(Top 371%)
30K18.64 mi3.11 mi10698+1188430+1138430+11310505(Top 39%)8100(Top 53%)8100(Top 360%)
20M20.00 mi1.36 mi10657+418383+478383+4710217(Top 38%)7870(Top 52%)7870(Top 349%)
21M21.00 mi1.00 mi10608+498339+448339+4410372(Top 39%)7792(Top 51%)7792(Top 346%)
35K21.75 mi0.75 mi10614-68318+218318+2111577(Top 43%)8369(Top 55%)8369(Top 372%)
23M23.00 mi1.25 mi106148287+318287+3110780(Top 40%)7857(Top 52%)7857(Top 349%)
24M24.00 mi1.00 mi10557+578230+578230+579638(Top 36%)7217(Top 48%)7217(Top 320%)
40K24.85 mi0.85 mi10507+508175+558175+559851(Top 37%)7267(Top 48%)7267(Top 323%)
25.2M25.20 mi0.35 mi10482+258157+188157+189213(Top 35%)6873(Top 45%)6873(Top 305%)
Finish26.22 mi1.02 mi10379+1038078+798078+798945(Top 34%)6723(Top 44%)6723(Top 299%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

10921

Males

8610

M45-49

8610

5K→10K

3.1 - 6.2 mi

Top 40%
×5stories
+79ft-138ft

Overall

10522

Males

8440

M45-49

8440

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

10921

Males

8610

M45-49

8610

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

10714

Males

8435

M45-49

8435

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

11542

Males

8855

M45-49

8855

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

10715

Males

8351

M45-49

8351

25K→30K

15.5 - 18.6 mi

Top 39%
×9stories
+181ft-148ft

Overall

10505

Males

8100

M45-49

8100

30K→20M

18.6 - 20.0 mi

Top 38%
×5stories
+64ft-50ft

Overall

10217

Males

7870

M45-49

7870

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10372

Males

7792

M45-49

7792

21M→35K

21.0 - 21.8 mi

Top 43%
×7stories
+17ft-86ft

Overall

11577

Males

8369

M45-49

8369

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

10780

Males

7857

M45-49

7857

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

9638

Males

7217

M45-49

7217

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9851

Males

7267

M45-49

7267

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9213

Males

6873

M45-49

6873

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2stories
+22ft-21ft

Overall

8945

Males

6723

M45-49

6723

Passing Analysis

Category:
Athletes Passed
2051*
Passed By
1104
Net Change
+947
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11326
5K → 10K569149+420#11326#10906
10K → 15K183171+12#10906#10894
15K → 20K187131+56#10894#10838
20K → Half1567-52#10838#10890
Half → 25K15783+74#10890#10816
25K → 30K240122+118#10816#10698
30K → 20M99*58+41#10698#10657
20M → 21M9546+49#10657#10608
21M → 35K5157-6#10608#10614
35K → 23M85850#10614#10614
23M → 24M10043+57#10614#10557
24M → 40K9343+50#10557#10507
40K → 25.2M4116+25#10507#10482
25.2M → Finish13633+103#10482#10379
TOTALS2051*1104+947

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

📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing