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BOSTON MARATHON 2023

Tracy Ma

Bib: 22776•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:48
Rank: #18414
Start → 5K
26:48 | 8:38/mi
10K· 6.21 mi
53:21
Rank: #18461 (-47)
5K → 10K
26:33 | 8:33/mi
15K· 9.32 mi
1:20:09
Rank: #18484 (-23)
10K → 15K
26:48 | 8:38/mi
20K· 12.43 mi
1:47:10
Rank: #18348 (+136)
15K → 20K
27:01 | 8:42/mi
Half· 13.11 mi
1:53:03
Rank: #18346 (+2)
20K → Half
5:53 | 8:37/mi
25K· 15.53 mi
2:14:14
Rank: #18218 (+128)
Half → 25K
21:11 | 8:44/mi
30K· 18.64 mi
2:44:26
Rank: #18705 (-487)
25K → 30K
30:12 | 9:43/mi
20M
2:57:01
Rank: #18620 (+85)
30K → 20M
12:35 | 9:16/mi
21M
3:07:07
Rank: #18601 (+19)
20M → 21M
10:06 | 10:06/mi
35K· 21.75 mi
3:15:52
Rank: #19035 (-434)
21M → 35K
8:45 | 11:42/mi
23M
3:29:27
Rank: #19333 (-298)
35K → 23M
13:35 | 10:51/mi
24M
3:39:04
Rank: #19352 (-19)
23M → 24M
9:37 | 9:37/mi
40K· 24.85 mi
3:47:13
Rank: #19339 (+13)
24M → 40K
8:09 | 9:32/mi
25.2M
3:50:57
Rank: #19367 (-28)
40K → 25.2M
3:44 | 10:50/mi
Finish· 26.22 mi
3:59:53
Rank: #19289 (+78)
25.2M → Finish
8:56 | 8:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:03
Pace8:37 /mi
2nd Half
Distance13.11 mi
Time2:06:50
Pace9:41 /mi
📊Positive Split: 12.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:1826:488:3826:48
8:38
-
10K
6.21 mi12:08:5153:218:3526:33
8:33
-0:05
15K
9.32 mi12:35:391:20:098:3626:48
8:38
+0:05
20K
12.43 mi13:02:401:47:108:3727:01
8:42
+0:04
Half
13.11 mi13:08:331:53:038:375:53
8:37
-0:05
25K
15.53 mi13:29:442:14:148:3821:11
8:44
+0:07
30K
18.64 mi13:59:562:44:268:4930:12
9:43
+0:59
20M
20.00 mi14:12:312:57:018:5112:35
9:16
-0:27
21M
21.00 mi14:22:373:07:078:5510:06
10:06
+0:50
35K
21.75 mi14:31:223:15:529:008:45
11:42
+1:36
23M
23.00 mi14:44:573:29:279:0613:35
10:51
-0:51
24M
24.00 mi14:54:343:39:049:089:37
9:37
-1:14
40K
24.85 mi15:02:433:47:139:098:09
9:32
-0:05
25.2M
25.20 mi15:06:273:50:579:103:44
10:50
+1:18
Finish
26.22 mi15:15:233:59:539:098:56
8:46
-2:04

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

8:33 /mi

Average Pace

9:09 /mi

Slowest Pace

11:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:10

60% of race

Time at Steady Pace

1:00:33

25% of race

Time at Slower Pace

36:10

15% of race

Average Pace: 9:09 /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 mi11:42:1826:488:3826:48
8:38
#18414
10K
6.21 mi12:08:5153:218:3526:33
8:33
#18461
15K
9.32 mi12:35:391:20:098:3626:48
8:38
#18484
20K
12.43 mi13:02:401:47:108:3727:01
8:42
#18348
Half
13.11 mi13:08:331:53:038:375:53
8:37
#18346
25K
15.53 mi13:29:442:14:148:3821:11
8:44
#18218
30K
18.64 mi13:59:562:44:268:4930:12
9:43
#18705
20M
20.00 mi14:12:312:57:018:5112:35
9:16
#18620
21M
21.00 mi14:22:373:07:078:5510:06
10:06
#18601
35K
21.75 mi14:31:223:15:529:008:45
11:42
#19035
23M
23.00 mi14:44:573:29:279:0613:35
10:51
#19333
24M
24.00 mi14:54:343:39:049:089:37
9:37
#19352
40K
24.85 mi15:02:433:47:139:098:09
9:32
#19339
25.2M
25.20 mi15:06:273:50:579:103:44
10:50
#19367
Finish
26.22 mi15:15:233:59:539:098:56
8:46
#19289
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi184146826682618617(Top 70%)6870(Top 60%)6870(Top 569%)
10K6.21 mi3.10 mi18461-476804+226804+2218554(Top 70%)6807(Top 60%)6807(Top 564%)
15K9.32 mi3.11 mi18484-236807-36807-318617(Top 70%)6870(Top 60%)6870(Top 569%)
20K12.43 mi3.11 mi18348+1366720+876720+8718115(Top 68%)6579(Top 58%)6579(Top 545%)
Half13.11 mi0.68 mi18346+26715+56715+518541(Top 70%)6817(Top 60%)6817(Top 565%)
25K15.53 mi2.42 mi18218+1286660+556660+5517606(Top 66%)6347(Top 56%)6347(Top 526%)
30K18.64 mi3.11 mi18705-4876977-3176977-31720211(Top 76%)7890(Top 69%)7890(Top 654%)
20M20.00 mi1.36 mi18620+856946+316946+3117867(Top 67%)6677(Top 58%)6677(Top 553%)
21M21.00 mi1.00 mi18601+196930+166930+1618421(Top 69%)7018(Top 61%)7018(Top 581%)
35K21.75 mi0.75 mi19035-4347196-2667196-26624366(Top 92%)10322(Top 90%)10322(Top 855%)
23M23.00 mi1.25 mi19333-2987374-1787374-17822067(Top 83%)9110(Top 80%)9110(Top 755%)
24M24.00 mi1.00 mi19352-197384-107384-1019663(Top 74%)7798(Top 68%)7798(Top 646%)
40K24.85 mi0.85 mi19339+137394-107394-1018479(Top 69%)7210(Top 63%)7210(Top 597%)
25.2M25.20 mi0.35 mi19367-287409-157409-1520101(Top 76%)8129(Top 71%)8129(Top 673%)
Finish26.22 mi1.02 mi19289+787375+347375+3416897(Top 63%)6327(Top 55%)6327(Top 524%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21stories
+97ft-345ft

Overall

18617

Females

6870

F50-54

6870

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

18554

Females

6807

F50-54

6807

10K→15K

6.2 - 9.3 mi

Top 70%
×3stories
+67ft-78ft

Overall

18617

Females

6870

F50-54

6870

15K→20K

9.3 - 12.4 mi

Top 68%
×5stories
+106ft-86ft

Overall

18115

Females

6579

F50-54

6579

20K→Half

12.4 - 13.1 mi

Top 70%
×2stories
+19ft-37ft

Overall

18541

Females

6817

F50-54

6817

Half→25K

13.1 - 15.5 mi

Top 66%
×4stories
+66ft-88ft

Overall

17606

Females

6347

F50-54

6347

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

20211

Females

7890

F50-54

7890

30K→20M

18.6 - 20.0 mi

Top 67%
×5stories
+64ft-50ft

Overall

17867

Females

6677

F50-54

6677

20M→21M

20.0 - 21.0 mi

Top 69%
×8stories
+106ft-24ft

Overall

18421

Females

7018

F50-54

7018

21M→35K

21.0 - 21.8 mi

Top 92%
×7stories
+17ft-86ft

Overall

24366

Females

10322

F50-54

10322

35K→23M

21.8 - 23.0 mi

Top 83%
×5stories
+23ft-63ft

Overall

22067

Females

9110

F50-54

9110

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

19663

Females

7798

F50-54

7798

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18479

Females

7210

F50-54

7210

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20101

Females

8129

F50-54

8129

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2stories
+22ft-21ft

Overall

16897

Females

6327

F50-54

6327

Passing Analysis

Category:
Athletes Passed
1458
Passed By
2333
Net Change
-875
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18414
5K → 10K301348-47#18414#18461
10K → 15K170193-23#18461#18484
15K → 20K22589+136#18484#18348
20K → Half3432+2#18348#18346
Half → 25K18961+128#18346#18218
25K → 30K70557-487#18218#18705
30K → 20M12641+85#18705#18620
20M → 21M9677+19#18620#18601
21M → 35K2436-434#18601#19035
35K → 23M27325-298#19035#19333
23M → 24M5170-19#19333#19352
24M → 40K5643+13#19352#19339
40K → 25.2M1442-28#19339#19367
25.2M → Finish9719+78#19367#19289
TOTALS14582333-875
📊

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