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BOSTON MARATHON 2023

Siguang Xu

Bib: 21071•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 49%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Top 19%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
25:22
Rank: #15169
Start → 5K
25:22 | 8:10/mi
10K· 6.21 mi
50:24
Rank: #15185 (-16)
5K → 10K
25:02 | 8:03/mi
15K· 9.32 mi
1:15:01
Rank: #14726 (+459)
10K → 15K
24:37 | 7:55/mi
20K· 12.43 mi
1:39:50
Rank: #14349 (+377)
15K → 20K
24:49 | 7:59/mi
Half· 13.11 mi
1:45:20
Rank: #14360 (-11)
20K → Half
5:30 | 8:04/mi
25K· 15.53 mi
2:04:19
Rank: #13893 (+467)
Half → 25K
18:59 | 7:50/mi
30K· 18.64 mi
2:30:06
Rank: #13690 (+203)
25K → 30K
25:47 | 8:18/mi
20M
2:41:19
Rank: #13557 (+133)
30K → 20M
11:13 | 8:15/mi
21M
2:50:05
Rank: #13448 (+109)
20M → 21M
8:46 | 8:46/mi
35K· 21.75 mi
2:56:17
Rank: #13452 (-4)
21M → 35K
6:12 | 8:17/mi
23M
3:06:43
Rank: #13338 (+114)
35K → 23M
10:26 | 8:20/mi
24M
3:14:52
Rank: #13259 (+79)
23M → 24M
8:09 | 8:09/mi
40K· 24.85 mi
3:21:44
Rank: #13124 (+135)
24M → 40K
6:52 | 8:02/mi
25.2M
3:24:42
Rank: #13066 (+58)
40K → 25.2M
2:58 | 8:36/mi
Finish· 26.22 mi
3:32:37
Rank: #12960 (+106)
25.2M → Finish
7:55 | 7:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:20
Pace8:02 /mi
2nd Half
Distance13.11 mi
Time1:47:17
Pace8:11 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:0925:228:1025:22
8:10
-
10K
6.21 mi11:47:1150:248:0725:02
8:03
-0:07
15K
9.32 mi12:11:481:15:018:0324:37
7:55
-0:08
20K
12.43 mi12:36:371:39:508:0224:49
7:59
+0:04
Half
13.11 mi12:42:071:45:208:025:30
8:04
+0:05
25K
15.53 mi13:01:062:04:198:0018:59
7:50
-0:14
30K
18.64 mi13:26:532:30:068:0325:47
8:18
+0:28
20M
20.00 mi13:38:062:41:198:0411:13
8:15
-0:03
21M
21.00 mi13:46:522:50:058:068:46
8:46
+0:31
35K
21.75 mi13:53:042:56:178:066:12
8:17
-0:29
23M
23.00 mi14:03:303:06:438:0710:26
8:20
+0:03
24M
24.00 mi14:11:393:14:528:078:09
8:09
-0:11
40K
24.85 mi14:18:313:21:448:076:52
8:02
-0:07
25.2M
25.20 mi14:21:293:24:428:072:58
8:36
+0:34
Finish
26.22 mi14:29:243:32:378:077:55
7:46
-0:50

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

7:46 /mi

Average Pace

8:07 /mi

Slowest Pace

8:46 /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

3:20:53

94% of race

Time at Steady Pace

11:44

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:07 /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
5K
3.11 mi11:22:0925:228:1025:22
8:10
#15169
10K
6.21 mi11:47:1150:248:0725:02
8:03
#15185
15K
9.32 mi12:11:481:15:018:0324:37
7:55
#14726
20K
12.43 mi12:36:371:39:508:0224:49
7:59
#14349
Half
13.11 mi12:42:071:45:208:025:30
8:04
#14360
25K
15.53 mi13:01:062:04:198:0018:59
7:50
#13893
30K
18.64 mi13:26:532:30:068:0325:47
8:18
#13690
20M
20.00 mi13:38:062:41:198:0411:13
8:15
#13557
21M
21.00 mi13:46:522:50:058:068:46
8:46
#13448
35K
21.75 mi13:53:042:56:178:066:12
8:17
#13452
23M
23.00 mi14:03:303:06:438:0710:26
8:20
#13338
24M
24.00 mi14:11:393:14:528:078:09
8:09
#13259
40K
24.85 mi14:18:313:21:448:076:52
8:02
#13124
25.2M
25.20 mi14:21:293:24:428:072:58
8:36
#13066
Finish
26.22 mi14:29:243:32:378:077:55
7:46
#12960
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi15169103941039413754(Top 52%)9802(Top 65%)9802(Top 883%)
10K6.21 mi3.10 mi15185-1610400-610400-615208(Top 57%)10388(Top 68%)10388(Top 936%)
15K9.32 mi3.11 mi14726+45910214+18610214+18613754(Top 52%)9802(Top 65%)9802(Top 883%)
20K12.43 mi3.11 mi14349+37710046+16810046+16813302(Top 50%)9577(Top 63%)9577(Top 863%)
Half13.11 mi0.68 mi14360-1110047-110047-114777(Top 56%)10194(Top 67%)10194(Top 918%)
25K15.53 mi2.42 mi13893+4679826+2219826+22111343(Top 43%)8650(Top 57%)8650(Top 779%)
30K18.64 mi3.11 mi13690+2039720+1069720+10613021(Top 49%)9235(Top 61%)9235(Top 832%)
20M20.00 mi1.36 mi13557+1339645+759645+7512036(Top 45%)8726(Top 57%)8726(Top 786%)
21M21.00 mi1.00 mi13448+1099588+579588+5712052(Top 45%)8610(Top 57%)8610(Top 776%)
35K21.75 mi0.75 mi13452-49575+139575+1313990(Top 53%)9409(Top 62%)9409(Top 848%)
23M23.00 mi1.25 mi13338+1149504+719504+7112114(Top 46%)8523(Top 56%)8523(Top 768%)
24M24.00 mi1.00 mi13259+799447+579447+5712235(Top 46%)8508(Top 56%)8508(Top 766%)
40K24.85 mi0.85 mi13124+1359364+839364+8310254(Top 39%)7475(Top 49%)7475(Top 673%)
25.2M25.20 mi0.35 mi13066+589326+389326+3810158(Top 38%)7392(Top 49%)7392(Top 666%)
Finish26.22 mi1.02 mi12960+1069265+619265+6110439(Top 39%)7523(Top 50%)7523(Top 678%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21stories
+97ft-345ft

Overall

13754

Males

9802

M60-64

9802

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

15208

Males

10388

M60-64

10388

10K→15K

6.2 - 9.3 mi

Top 52%
×3stories
+67ft-78ft

Overall

13754

Males

9802

M60-64

9802

15K→20K

9.3 - 12.4 mi

Top 50%
×5stories
+106ft-86ft

Overall

13302

Males

9577

M60-64

9577

20K→Half

12.4 - 13.1 mi

Top 56%
×2stories
+19ft-37ft

Overall

14777

Males

10194

M60-64

10194

Half→25K

13.1 - 15.5 mi

Top 43%
×4stories
+66ft-88ft

Overall

11343

Males

8650

M60-64

8650

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13021

Males

9235

M60-64

9235

30K→20M

18.6 - 20.0 mi

Top 45%
×5stories
+64ft-50ft

Overall

12036

Males

8726

M60-64

8726

20M→21M

20.0 - 21.0 mi

Top 45%
×8stories
+106ft-24ft

Overall

12052

Males

8610

M60-64

8610

21M→35K

21.0 - 21.8 mi

Top 53%
×7stories
+17ft-86ft

Overall

13990

Males

9409

M60-64

9409

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

12114

Males

8523

M60-64

8523

23M→24M

23.0 - 24.0 mi

Top 46%
×6stories
+12ft-82ft

Overall

12235

Males

8508

M60-64

8508

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10254

Males

7475

M60-64

7475

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10158

Males

7392

M60-64

7392

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

10439

Males

7523

M60-64

7523

Passing Analysis

Category:
Athletes Passed
2947
Passed By
738
Net Change
+2209
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15169
5K → 10K293309-16#15169#15185
10K → 15K49132+459#15185#14726
15K → 20K42245+377#14726#14349
20K → Half2233-11#14349#14360
Half → 25K47811+467#14360#13893
25K → 30K28683+203#13893#13690
30K → 20M16027+133#13690#13557
20M → 21M15142+109#13557#13448
21M → 35K5458-4#13448#13452
35K → 23M15339+114#13452#13338
23M → 24M10728+79#13338#13259
24M → 40K14611+135#13259#13124
40K → 25.2M657+58#13124#13066
25.2M → Finish11913+106#13066#12960
TOTALS2947738+2209
📊

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing