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BOSTON MARATHON 2023

Zhijian Liang

Bib: 14555•M

AB

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 35%
Gender (Male)
#0 / 15176
Top 50%
Masters (Masters Men)
#0 / 9891
Top 38%
Division (M50-54)
#0 / 2052
Top 36%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:48/mi
24:14
↑ 97↓ 3451.5%
10K· 6.21 mi
7:43/mi
48:11
↑ 79↓ 1380.4%
15K· 9.32 mi
7:41/mi
1:12:02
↑ 67↓ 78
20K· 12.43 mi
7:43/mi
1:36:01
↑ 106↓ 860.1%
Half· 13.11 mi
7:37/mi
1:41:13
↑ 19↓ 370.5%
25K· 15.53 mi
7:37/mi
1:59:42
↑ 66↓ 880.2%
30K· 18.64 mi
7:41/mi
2:23:34
↑ 181↓ 1480.2%
20M
7:36/mi
2:33:53
↑ 64↓ 500.2%
21M
8:02/mi
2:41:55
↑ 106↓ 241.6%
35K· 21.75 mi
7:24/mi
2:47:27
↑ 17↓ 861.7%
23M
7:36/mi
2:56:58
↑ 23↓ 630.6%
24M
7:24/mi
3:04:22
↓ 821.3%
40K· 24.85 mi
7:28/mi
3:10:45
↓ 200.3%
25.2M
7:53/mi
3:13:28
↑ 13↓ 160.2%
Finish· 26.22 mi
7:00/mi
3:20:36
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:41:13
Pace7:43 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:39:23
Pace7:35 /mi
📊Negative Split: 1.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:0924:147:4824:14
7:48
-
10K
6.21 mi11:17:0648:117:4523:57
7:43
-0:05
15K
9.32 mi11:40:571:12:027:4423:51
7:41
-0:02
20K
12.43 mi12:04:561:36:017:4423:59
7:43
+0:02
Half
13.11 mi12:10:081:41:137:435:12
7:37
-0:06
25K
15.53 mi12:28:371:59:427:4218:29
7:37
0:00
30K
18.64 mi12:52:292:23:347:4223:52
7:41
+0:04
20M
20.00 mi13:02:482:33:537:4210:19
7:36
-0:05
21M
21.00 mi13:10:502:41:557:438:02
8:02
+0:26
35K
21.75 mi13:16:222:47:277:425:32
7:24
-0:38
23M
23.00 mi13:25:532:56:587:429:31
7:36
+0:12
24M
24.00 mi13:33:173:04:227:417:24
7:24
-0:12
40K
24.85 mi13:39:403:10:457:406:23
7:28
+0:04
25.2M
25.20 mi13:42:233:13:287:412:43
7:53
+0:25
Finish
26.22 mi13:49:313:20:367:397:08
7:00
-0:53

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

7:00 /mi

Average Pace

7:39 /mi

Slowest Pace

8:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:41

59% of race

Time at Steady Pace

1:22:55

41% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:39 /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 mi10:53:0924:147:4824:14
7:48
#12319
10K
6.21 mi11:17:0648:117:4523:57
7:43
#12300
15K
9.32 mi11:40:571:12:027:4423:51
7:41
#12037
20K
12.43 mi12:04:561:36:017:4423:59
7:43
#11742
Half
13.11 mi12:10:081:41:137:435:12
7:37
#11718
25K
15.53 mi12:28:371:59:427:4218:29
7:37
#11343
30K
18.64 mi12:52:292:23:347:4223:52
7:41
#10789
20M
20.00 mi13:02:482:33:537:4210:19
7:36
#10506
21M
21.00 mi13:10:502:41:557:438:02
8:02
#10306
35K
21.75 mi13:16:222:47:277:425:32
7:24
#10189
23M
23.00 mi13:25:532:56:587:429:31
7:36
#9956
24M
24.00 mi13:33:173:04:227:417:24
7:24
#9785
40K
24.85 mi13:39:403:10:457:406:23
7:28
#9619
25.2M
25.20 mi13:42:233:13:287:412:43
7:53
#9528
Finish
26.22 mi13:49:313:20:367:397:08
7:00
#9344
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi123199247924711618(Top 44%)8908(Top 59%)8908(Top 434%)
10K6.21 mi3.10 mi12300+199244+39244+312302(Top 46%)9235(Top 61%)9235(Top 450%)
15K9.32 mi3.11 mi12037+2639103+1419103+14111618(Top 44%)8908(Top 59%)8908(Top 434%)
20K12.43 mi3.11 mi11742+2958961+1428961+14211056(Top 42%)8603(Top 57%)8603(Top 419%)
Half13.11 mi0.68 mi11718+248951+108951+1011120(Top 42%)8652(Top 57%)8652(Top 422%)
25K15.53 mi2.42 mi11343+3758767+1848767+1849715(Top 36%)7828(Top 52%)7828(Top 381%)
30K18.64 mi3.11 mi10789+5548480+2878480+2878514(Top 32%)6991(Top 46%)6991(Top 341%)
20M20.00 mi1.36 mi10506+2838319+1618319+1617445(Top 28%)6250(Top 41%)6250(Top 305%)
21M21.00 mi1.00 mi10306+2008191+1288191+1287551(Top 28%)6219(Top 41%)6219(Top 303%)
35K21.75 mi0.75 mi10189+1178123+688123+687770(Top 29%)6366(Top 42%)6366(Top 310%)
23M23.00 mi1.25 mi9956+2337976+1477976+1477096(Top 27%)5891(Top 39%)5891(Top 287%)
24M24.00 mi1.00 mi9785+1717842+1347842+1347063(Top 27%)5759(Top 38%)5759(Top 281%)
40K24.85 mi0.85 mi9619+1667730+1127730+1126504(Top 24%)5350(Top 35%)5350(Top 261%)
25.2M25.20 mi0.35 mi9528+917665+657665+655834(Top 22%)4854(Top 32%)4854(Top 237%)
Finish26.22 mi1.02 mi9344+1847535+1307535+1305222(Top 20%)4430(Top 29%)4430(Top 216%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

11618

Males

8908

M50-54

8908

5K→10K

3.1 - 6.2 mi

Top 46%
×5story building
+79ft-138ft

Overall

12302

Males

9235

M50-54

9235

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

11618

Males

8908

M50-54

8908

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

11056

Males

8603

M50-54

8603

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

11120

Males

8652

M50-54

8652

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

9715

Males

7828

M50-54

7828

25K→30K

15.5 - 18.6 mi

Top 32%
×9story building
+181ft-148ft

Overall

8514

Males

6991

M50-54

6991

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

7445

Males

6250

M50-54

6250

20M→21M

20.0 - 21.0 mi

Top 28%
×8story building
+106ft-24ft

Overall

7551

Males

6219

M50-54

6219

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

7770

Males

6366

M50-54

6366

35K→23M

21.8 - 23.0 mi

Top 27%
×5story building
+23ft-63ft

Overall

7096

Males

5891

M50-54

5891

23M→24M

23.0 - 24.0 mi

Top 27%
×6story building
+12ft-82ft

Overall

7063

Males

5759

M50-54

5759

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6504

Males

5350

M50-54

5350

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

5834

Males

4854

M50-54

4854

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2story building
+22ft-21ft

Overall

5222

Males

4430

M50-54

4430

Passing Analysis

Category:
Athletes Passed
3489*
Passed By
514
Net Change
+2975
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12319
5K → 10K340321+19#12319#12300
10K → 15K34582+263#12300#12037
15K → 20K33843+295#12037#11742
20K → Half4016+24#11742#11718
Half → 25K3805+375#11718#11343
25K → 30K5617+554#11343#10789
30K → 20M286*3+283#10789#10506
20M → 21M21111+200#10506#10306
21M → 35K1225+117#10306#10189
35K → 23M235*2+233#10189#9956
23M → 24M1776+171#9956#9785
24M → 40K169*3+166#9785#9619
40K → 25.2M965+91#9619#9528
25.2M → Finish1895+184#9528#9344
TOTALS3489*514+2975

* 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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing