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BOSTON MARATHON 2023

Xuetao Bi

Bib: 31973•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:08
Rank: #20678
Start → 5K
9:03/mi
28:08 split
10K· 6.21 mi
55:46
Rank: #20542 (+136)
5K → 10K
8:54/mi
27:38 split
15K· 9.32 mi
1:24:42
Rank: #20972 (-430)
10K → 15K
9:19/mi
28:56 split
20K· 12.43 mi
1:54:10
Rank: #21148 (-176)
15K → 20K
9:29/mi
29:28 split
Half· 13.11 mi
2:00:47
Rank: #21223 (-75)
20K → Half
9:42/mi
6:37 split
25K· 15.53 mi
2:24:51
Rank: #21358 (-135)
Half → 25K
9:56/mi
24:04 split
30K· 18.64 mi
2:56:57
Rank: #21461 (-103)
25K → 30K
10:20/mi
32:06 split
20M
3:11:01
Rank: #21461
30K → 20M
10:21/mi
14:04 split
21M
3:22:16
Rank: #21441 (+20)
20M → 21M
11:15/mi
11:15 split
35K· 21.75 mi
3:29:16
Rank: #21361 (+80)
21M → 35K
9:21/mi
7:00 split
23M
3:43:15
Rank: #21468 (-107)
35K → 23M
11:10/mi
13:59 split
24M
3:53:26
Rank: #21459 (+9)
23M → 24M
10:11/mi
10:11 split
40K· 24.85 mi
4:02:09
Rank: #21419 (+40)
24M → 40K
10:12/mi
8:43 split
25.2M
4:05:47
Rank: #21370 (+49)
40K → 25.2M
10:32/mi
3:38 split
Finish· 26.22 mi
4:15:50
Rank: #21359 (+11)
25.2M → Finish
9:52/mi
10:03 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:47
Pace9:13 /mi
2nd Half
Distance13.11 mi
Time2:15:03
Pace10:18 /mi
📊Positive Split: 11.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:0728:089:0328:08
9:03
-
10K
6.21 mi12:11:4555:468:5827:38
8:54
-0:09
15K
9.32 mi12:40:411:24:429:0528:56
9:19
+0:25
20K
12.43 mi13:10:091:54:109:1129:28
9:29
+0:10
Half
13.11 mi13:16:462:00:479:136:37
9:42
+0:13
25K
15.53 mi13:40:502:24:519:1924:04
9:56
+0:14
30K
18.64 mi14:12:562:56:579:3032:06
10:20
+0:24
20M
20.00 mi14:27:003:11:019:3314:04
10:21
+0:01
21M
21.00 mi14:38:153:22:169:3811:15
11:15
+0:54
35K
21.75 mi14:45:153:29:169:377:00
9:21
-1:54
23M
23.00 mi14:59:143:43:159:4213:59
11:10
+1:49
24M
24.00 mi15:09:253:53:269:4410:11
10:11
-0:59
40K
24.85 mi15:18:084:02:099:458:43
10:12
+0:01
25.2M
25.20 mi15:21:464:05:479:453:38
10:32
+0:20
Finish
26.22 mi15:31:494:15:509:4610:03
9:52
-0:40

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

8:54 /mi

Average Pace

9:46 /mi

Slowest Pace

11:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:10

47% of race

Time at Steady Pace

59:38

23% of race

Time at Slower Pace

1:15:02

29% of race

Average Pace: 9:45 /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 mi11:44:0728:089:0328:08
9:03
#20678
10K
6.21 mi12:11:4555:468:5827:38
8:54
#20542
15K
9.32 mi12:40:411:24:429:0528:56
9:19
#20972
20K
12.43 mi13:10:091:54:109:1129:28
9:29
#21148
Half
13.11 mi13:16:462:00:479:136:37
9:42
#21223
25K
15.53 mi13:40:502:24:519:1924:04
9:56
#21358
30K
18.64 mi14:12:562:56:579:3032:06
10:20
#21461
20M
20.00 mi14:27:003:11:019:3314:04
10:21
#21461
21M
21.00 mi14:38:153:22:169:3811:15
11:15
#21441
35K
21.75 mi14:45:153:29:169:377:00
9:21
#21361
23M
23.00 mi14:59:143:43:159:4213:59
11:10
#21468
24M
24.00 mi15:09:253:53:269:4410:11
10:11
#21459
40K
24.85 mi15:18:084:02:099:458:43
10:12
#21419
25.2M
25.20 mi15:21:464:05:479:453:38
10:32
#21370
Finish
26.22 mi15:31:494:15:509:4610:03
9:52
#21359
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi20678124451244521675(Top 81%)13052(Top 86%)13052(Top 582%)
10K6.21 mi3.10 mi20542+13612464-1912464-1920396(Top 77%)12455(Top 82%)12455(Top 556%)
15K9.32 mi3.11 mi20972-43012678-21412678-21421675(Top 81%)13052(Top 86%)13052(Top 582%)
20K12.43 mi3.11 mi21148-17612776-9812776-9821497(Top 81%)12952(Top 85%)12952(Top 578%)
Half13.11 mi0.68 mi21223-7512815-3912815-3922621(Top 85%)13448(Top 89%)13448(Top 600%)
25K15.53 mi2.42 mi21358-13512872-5712872-5722043(Top 83%)13163(Top 87%)13163(Top 587%)
30K18.64 mi3.11 mi21461-10312904-3212904-3221841(Top 82%)13006(Top 86%)13006(Top 580%)
20M20.00 mi1.36 mi2146112892+1212892+1221394(Top 80%)12735(Top 84%)12735(Top 568%)
21M21.00 mi1.00 mi21441+2012874+1812874+1821364(Top 80%)12681(Top 84%)12681(Top 566%)
35K21.75 mi0.75 mi21361+8012829+4512829+4519367(Top 73%)11768(Top 78%)11768(Top 525%)
23M23.00 mi1.25 mi21468-10712863-3412863-3422667(Top 85%)13231(Top 87%)13231(Top 590%)
24M24.00 mi1.00 mi21459+912848+1512848+1521276(Top 80%)12544(Top 83%)12544(Top 560%)
40K24.85 mi0.85 mi21419+4012817+3112817+3120471(Top 77%)12134(Top 80%)12134(Top 541%)
25.2M25.20 mi0.35 mi21370+4912793+2412793+2419203(Top 72%)11575(Top 76%)11575(Top 517%)
Finish26.22 mi1.02 mi21359+1112776+1712776+1721345(Top 80%)12581(Top 83%)12581(Top 561%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21stories
+97ft-345ft

Overall

21675

Males

13052

M40-44

13052

5K→10K

3.1 - 6.2 mi

Top 77%
×5stories
+79ft-138ft

Overall

20396

Males

12455

M40-44

12455

10K→15K

6.2 - 9.3 mi

Top 81%
×3stories
+67ft-78ft

Overall

21675

Males

13052

M40-44

13052

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

21497

Males

12952

M40-44

12952

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

22621

Males

13448

M40-44

13448

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

22043

Males

13163

M40-44

13163

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

21841

Males

13006

M40-44

13006

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

21394

Males

12735

M40-44

12735

20M→21M

20.0 - 21.0 mi

Top 80%
×8stories
+106ft-24ft

Overall

21364

Males

12681

M40-44

12681

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

19367

Males

11768

M40-44

11768

35K→23M

21.8 - 23.0 mi

Top 85%
×5stories
+23ft-63ft

Overall

22667

Males

13231

M40-44

13231

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

21276

Males

12544

M40-44

12544

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20471

Males

12134

M40-44

12134

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

19203

Males

11575

M40-44

11575

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2stories
+22ft-21ft

Overall

21345

Males

12581

M40-44

12581

Passing Analysis

Category:
Athletes Passed
1169
Passed By
1850
Net Change
-681
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20678
5K → 10K389253+136#20678#20542
10K → 15K53483-430#20542#20972
15K → 20K96272-176#20972#21148
20K → Half580-75#21148#21223
Half → 25K66201-135#21223#21358
25K → 30K90193-103#21358#21461
30K → 20M73730#21461#21461
20M → 21M7252+20#21461#21441
21M → 35K822+80#21441#21361
35K → 23M38145-107#21361#21468
23M → 24M4839+9#21468#21459
24M → 40K6525+40#21459#21419
40K → 25.2M501+49#21419#21370
25.2M → Finish4231+11#21370#21359
TOTALS11691850-681
📊

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