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BOSTON MARATHON 2023

Shihong Ni

Bib: 20142•F

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 35%
Masters (Masters Women)
#0 / 6539
Top 21%
Division (F45-49)
#0 / 1817
Top 23%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:15
Rank: #14922
Start → 5K
25:15 | 8:08/mi
10K· 6.21 mi
49:49
Rank: #14509 (+413)
5K → 10K
24:34 | 7:54/mi
15K· 9.32 mi
1:14:22
Rank: #14208 (+301)
10K → 15K
24:33 | 7:54/mi
20K· 12.43 mi
1:39:13
Rank: #13970 (+238)
15K → 20K
24:51 | 8:00/mi
Half· 13.11 mi
1:44:36
Rank: #13937 (+33)
20K → Half
5:23 | 7:53/mi
25K· 15.53 mi
2:04:13
Rank: #13842 (+95)
Half → 25K
19:37 | 8:05/mi
30K· 18.64 mi
2:30:07
Rank: #13704 (+138)
25K → 30K
25:54 | 8:20/mi
20M
2:42:06
Rank: #13873 (-169)
30K → 20M
11:59 | 8:49/mi
21M
2:51:05
Rank: #13815 (+58)
20M → 21M
8:59 | 8:59/mi
35K· 21.75 mi
2:57:07
Rank: #13756 (+59)
21M → 35K
6:02 | 8:04/mi
23M
3:07:34
Rank: #13632 (+124)
35K → 23M
10:27 | 8:21/mi
24M
3:15:41
Rank: #13526 (+106)
23M → 24M
8:07 | 8:07/mi
40K· 24.85 mi
3:22:44
Rank: #13427 (+99)
24M → 40K
7:03 | 8:15/mi
25.2M
3:25:52
Rank: #13406 (+21)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:34:17
Rank: #13428 (-22)
25.2M → Finish
8:25 | 8:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:36
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:49:41
Pace8:22 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4325:158:0825:15
8:08
-
10K
6.21 mi11:43:1749:498:0124:34
7:54
-0:14
15K
9.32 mi12:07:501:14:227:5924:33
7:54
0:00
20K
12.43 mi12:32:411:39:137:5924:51
8:00
+0:06
Half
13.11 mi12:38:041:44:367:595:23
7:53
-0:07
25K
15.53 mi12:57:412:04:138:0019:37
8:05
+0:12
30K
18.64 mi13:23:352:30:078:0325:54
8:20
+0:15
20M
20.00 mi13:35:342:42:068:0611:59
8:49
+0:29
21M
21.00 mi13:44:332:51:058:098:59
8:59
+0:10
35K
21.75 mi13:50:352:57:078:096:02
8:04
-0:55
23M
23.00 mi14:01:023:07:348:0910:27
8:21
+0:17
24M
24.00 mi14:09:093:15:418:098:07
8:07
-0:14
40K
24.85 mi14:16:123:22:448:097:03
8:15
+0:08
25.2M
25.20 mi14:19:203:25:528:103:08
9:05
+0:50
Finish
26.22 mi14:27:453:34:178:118:25
8:16
-0:49

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

7:53 /mi

Average Pace

8:11 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:10:11

89% of race

Time at Steady Pace

24:06

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:10 /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 mi11:18:4325:158:0825:15
8:08
#14922
10K
6.21 mi11:43:1749:498:0124:34
7:54
#14509
15K
9.32 mi12:07:501:14:227:5924:33
7:54
#14208
20K
12.43 mi12:32:411:39:137:5924:51
8:00
#13970
Half
13.11 mi12:38:041:44:367:595:23
7:53
#13937
25K
15.53 mi12:57:412:04:138:0019:37
8:05
#13842
30K
18.64 mi13:23:352:30:078:0325:54
8:20
#13704
20M
20.00 mi13:35:342:42:068:0611:59
8:49
#13873
21M
21.00 mi13:44:332:51:058:098:59
8:59
#13815
35K
21.75 mi13:50:352:57:078:096:02
8:04
#13756
23M
23.00 mi14:01:023:07:348:0910:27
8:21
#13632
24M
24.00 mi14:09:093:15:418:098:07
8:07
#13526
40K
24.85 mi14:16:123:22:448:097:03
8:15
#13427
25.2M
25.20 mi14:19:203:25:528:103:08
9:05
#13406
Finish
26.22 mi14:27:453:34:178:118:25
8:16
#13428
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi149224593459313574(Top 51%)3821(Top 33%)3821(Top 210%)
10K6.21 mi3.10 mi14509+4134345+2484345+24814059(Top 53%)4083(Top 36%)4083(Top 225%)
15K9.32 mi3.11 mi14208+3014180+1654180+16513574(Top 51%)3821(Top 33%)3821(Top 210%)
20K12.43 mi3.11 mi13970+2384066+1144066+11413430(Top 50%)3784(Top 33%)3784(Top 208%)
Half13.11 mi0.68 mi13937+334047+194047+1913561(Top 51%)3837(Top 34%)3837(Top 211%)
25K15.53 mi2.42 mi13842+954017+304017+3013460(Top 51%)3899(Top 34%)3899(Top 215%)
30K18.64 mi3.11 mi13704+1383959+583959+5813282(Top 50%)3908(Top 34%)3908(Top 215%)
20M20.00 mi1.36 mi13873-1694084-1254084-12515529(Top 58%)5286(Top 46%)5286(Top 291%)
21M21.00 mi1.00 mi13815+584064+204064+2013338(Top 50%)4125(Top 36%)4125(Top 227%)
35K21.75 mi0.75 mi13756+594045+194045+1912619(Top 47%)3780(Top 33%)3780(Top 208%)
23M23.00 mi1.25 mi13632+1243992+533992+5312247(Top 46%)3658(Top 32%)3658(Top 201%)
24M24.00 mi1.00 mi13526+1063954+383954+3812081(Top 45%)3638(Top 32%)3638(Top 200%)
40K24.85 mi0.85 mi13427+993913+413913+4111713(Top 44%)3525(Top 31%)3525(Top 194%)
25.2M25.20 mi0.35 mi13406+213917-43917-413059(Top 49%)4257(Top 37%)4257(Top 234%)
Finish26.22 mi1.02 mi13428-223953-363953-3613858(Top 52%)4661(Top 41%)4661(Top 257%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21stories
+97ft-345ft

Overall

13574

Females

3821

F45-49

3821

5K→10K

3.1 - 6.2 mi

Top 53%
×5stories
+79ft-138ft

Overall

14059

Females

4083

F45-49

4083

10K→15K

6.2 - 9.3 mi

Top 51%
×3stories
+67ft-78ft

Overall

13574

Females

3821

F45-49

3821

15K→20K

9.3 - 12.4 mi

Top 50%
×5stories
+106ft-86ft

Overall

13430

Females

3784

F45-49

3784

20K→Half

12.4 - 13.1 mi

Top 51%
×2stories
+19ft-37ft

Overall

13561

Females

3837

F45-49

3837

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

13460

Females

3899

F45-49

3899

25K→30K

15.5 - 18.6 mi

Top 50%
×9stories
+181ft-148ft

Overall

13282

Females

3908

F45-49

3908

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

15529

Females

5286

F45-49

5286

20M→21M

20.0 - 21.0 mi

Top 50%
×8stories
+106ft-24ft

Overall

13338

Females

4125

F45-49

4125

21M→35K

21.0 - 21.8 mi

Top 47%
×7stories
+17ft-86ft

Overall

12619

Females

3780

F45-49

3780

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

12247

Females

3658

F45-49

3658

23M→24M

23.0 - 24.0 mi

Top 45%
×6stories
+12ft-82ft

Overall

12081

Females

3638

F45-49

3638

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11713

Females

3525

F45-49

3525

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13059

Females

4257

F45-49

4257

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2stories
+22ft-21ft

Overall

13858

Females

4661

F45-49

4661

Passing Analysis

Category:
Athletes Passed
2460
Passed By
966
Net Change
+1494
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14922
5K → 10K544131+413#14922#14509
10K → 15K37069+301#14509#14208
15K → 20K30668+238#14208#13970
20K → Half5421+33#13970#13937
Half → 25K17580+95#13937#13842
25K → 30K252114+138#13842#13704
30K → 20M53222-169#13704#13873
20M → 21M11961+58#13873#13815
21M → 35K7920+59#13815#13756
35K → 23M15430+124#13756#13632
23M → 24M12620+106#13632#13526
24M → 40K11819+99#13526#13427
40K → 25.2M4524+21#13427#13406
25.2M → Finish6587-22#13406#13428
TOTALS2460966+1494
📊

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