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BOSTON MARATHON 2023

Xiaoli Yang

Bib: 23003•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 43%
Division (F55-59)
#0 / 815
Top 19%
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
8:38/mi
26:49
↑ 97↓ 3451.5%
10K· 6.21 mi
8:32/mi
53:20
↑ 79↓ 1380.4%
15K· 9.32 mi
8:38/mi
1:20:08
↑ 67↓ 78
20K· 12.43 mi
8:30/mi
1:46:33
↑ 106↓ 860.1%
Half· 13.11 mi
8:27/mi
1:52:19
↑ 19↓ 370.5%
25K· 15.53 mi
8:37/mi
2:13:12
↑ 66↓ 880.2%
30K· 18.64 mi
8:52/mi
2:40:46
↑ 181↓ 1480.2%
20M
8:57/mi
2:52:56
↑ 64↓ 500.2%
21M
9:48/mi
3:02:44
↑ 106↓ 241.6%
35K· 21.75 mi
8:29/mi
3:09:05
↑ 17↓ 861.7%
23M
8:48/mi
3:20:06
↑ 23↓ 630.6%
24M
8:25/mi
3:28:31
↓ 821.3%
40K· 24.85 mi
8:40/mi
3:35:56
↓ 200.3%
25.2M
9:14/mi
3:39:07
↑ 13↓ 160.2%
Finish· 26.22 mi
8:30/mi
3:47:47
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:19
Pace8:34 /mi
2nd Half
Distance13.11 mi
Time1:55:28
Pace8:48 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:2026:498:3826:49
8:38
-
10K
6.21 mi12:08:5153:208:3526:31
8:32
-0:06
15K
9.32 mi12:35:391:20:088:3626:48
8:38
+0:06
20K
12.43 mi13:02:041:46:338:3426:25
8:30
-0:08
Half
13.11 mi13:07:501:52:198:345:46
8:27
-0:03
25K
15.53 mi13:28:432:13:128:3420:53
8:37
+0:10
30K
18.64 mi13:56:172:40:468:3727:34
8:52
+0:15
20M
20.00 mi14:08:272:52:568:3912:10
8:57
+0:05
21M
21.00 mi14:18:153:02:448:429:48
9:48
+0:51
35K
21.75 mi14:24:363:09:058:426:21
8:29
-1:19
23M
23.00 mi14:35:373:20:068:4211:01
8:48
+0:19
24M
24.00 mi14:44:023:28:318:418:25
8:25
-0:23
40K
24.85 mi14:51:273:35:568:417:25
8:40
+0:15
25.2M
25.20 mi14:54:383:39:078:423:11
9:14
+0:34
Finish
26.22 mi15:03:183:47:478:428:40
8:30
-0:44

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

8:25 /mi

Average Pace

8:42 /mi

Slowest Pace

9:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:37:59

96% of race

Time at Steady Pace

9:48

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:41 /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 mi11:42:2026:498:3826:49
8:38
#18432
10K
6.21 mi12:08:5153:208:3526:31
8:32
#18435
15K
9.32 mi12:35:391:20:088:3626:48
8:38
#18470
20K
12.43 mi13:02:041:46:338:3426:25
8:30
#18045
Half
13.11 mi13:07:501:52:198:345:46
8:27
#18006
25K
15.53 mi13:28:432:13:128:3420:53
8:37
#17781
30K
18.64 mi13:56:172:40:468:3727:34
8:52
#17509
20M
20.00 mi14:08:272:52:568:3912:10
8:57
#17395
21M
21.00 mi14:18:153:02:448:429:48
9:48
#17392
35K
21.75 mi14:24:363:09:058:426:21
8:29
#17303
23M
23.00 mi14:35:373:20:068:4211:01
8:48
#17172
24M
24.00 mi14:44:023:28:318:418:25
8:25
#17027
40K
24.85 mi14:51:273:35:568:417:25
8:40
#16925
25.2M
25.20 mi14:54:383:39:078:423:11
9:14
#16881
Finish
26.22 mi15:03:183:47:478:428:40
8:30
#16812
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi184326833683318606(Top 70%)6859(Top 60%)6859(Top 842%)
10K6.21 mi3.10 mi18435-36782+516782+5118466(Top 69%)6746(Top 59%)6746(Top 828%)
15K9.32 mi3.11 mi18470-356794-126794-1218606(Top 70%)6859(Top 60%)6859(Top 842%)
20K12.43 mi3.11 mi18045+4256540+2546540+25416881(Top 63%)5864(Top 51%)5864(Top 720%)
Half13.11 mi0.68 mi18006+396515+256515+2517492(Top 66%)6175(Top 54%)6175(Top 758%)
25K15.53 mi2.42 mi17781+2256405+1106405+11016885(Top 63%)5944(Top 52%)5944(Top 729%)
30K18.64 mi3.11 mi17509+2726261+1446261+14416512(Top 62%)5798(Top 51%)5798(Top 711%)
20M20.00 mi1.36 mi17395+1146215+466215+4616309(Top 61%)5758(Top 50%)5758(Top 707%)
21M21.00 mi1.00 mi17392+36228-136228-1317268(Top 65%)6345(Top 56%)6345(Top 779%)
35K21.75 mi0.75 mi17303+896185+436185+4315303(Top 57%)5307(Top 46%)5307(Top 651%)
23M23.00 mi1.25 mi17172+1316116+696116+6915017(Top 56%)5188(Top 45%)5188(Top 637%)
24M24.00 mi1.00 mi17027+1456062+546062+5414021(Top 53%)4695(Top 41%)4695(Top 576%)
40K24.85 mi0.85 mi16925+1026019+436019+4314406(Top 54%)4978(Top 44%)4978(Top 611%)
25.2M25.20 mi0.35 mi16881+446002+176002+1713924(Top 52%)4735(Top 41%)4735(Top 581%)
Finish26.22 mi1.02 mi16812+695967+355967+3515481(Top 58%)5528(Top 48%)5528(Top 678%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21story building
+97ft-345ft

Overall

18606

Females

6859

F55-59

6859

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

18466

Females

6746

F55-59

6746

10K→15K

6.2 - 9.3 mi

Top 70%
×3story building
+67ft-78ft

Overall

18606

Females

6859

F55-59

6859

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

16881

Females

5864

F55-59

5864

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

17492

Females

6175

F55-59

6175

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

16885

Females

5944

F55-59

5944

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

16512

Females

5798

F55-59

5798

30K→20M

18.6 - 20.0 mi

Top 61%
×5story building
+64ft-50ft

Overall

16309

Females

5758

F55-59

5758

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

17268

Females

6345

F55-59

6345

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

15303

Females

5307

F55-59

5307

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

15017

Females

5188

F55-59

5188

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

14021

Females

4695

F55-59

4695

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

14406

Females

4978

F55-59

4978

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

13924

Females

4735

F55-59

4735

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

15481

Females

5528

F55-59

5528

Passing Analysis

Category:
Athletes Passed
2474
Passed By
854
Net Change
+1620
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18432
5K → 10K325328-3#18432#18435
10K → 15K164199-35#18435#18470
15K → 20K44823+425#18470#18045
20K → Half5213+39#18045#18006
Half → 25K25530+225#18006#17781
25K → 30K32452+272#17781#17509
30K → 20M13925+114#17509#17395
20M → 21M8784+3#17395#17392
21M → 35K10112+89#17392#17303
35K → 23M15524+131#17303#17172
23M → 24M1527+145#17172#17027
24M → 40K11210+102#17027#16925
40K → 25.2M539+44#16925#16881
25.2M → Finish10738+69#16881#16812
TOTALS2474854+1620
📊

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