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BOSTON MARATHON 2023

Mary Grace Gray

Bib: 18436•F

UT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:34
Rank: #17930
Start → 5K
26:34 | 8:33/mi
10K· 6.21 mi
52:39
Rank: #17747 (+183)
5K → 10K
26:05 | 8:24/mi
15K· 9.32 mi
1:22:45
Rank: #20030 (-2283)
10K → 15K
30:06 | 9:41/mi
20K· 12.43 mi
1:48:55
Rank: #19143 (+887)
15K → 20K
26:10 | 8:25/mi
Half· 13.11 mi
1:54:36
Rank: #19040 (+103)
20K → Half
5:41 | 8:20/mi
25K· 15.53 mi
2:15:22
Rank: #18657 (+383)
Half → 25K
20:46 | 8:34/mi
30K· 18.64 mi
2:48:26
Rank: #19759 (-1102)
25K → 30K
33:04 | 10:39/mi
20M
3:00:35
Rank: #19503 (+256)
30K → 20M
12:09 | 8:56/mi
21M
3:14:21
Rank: #20171 (-668)
20M → 21M
13:46 | 13:46/mi
35K· 21.75 mi
3:20:51
Rank: #20041 (+130)
21M → 35K
6:30 | 8:41/mi
23M
3:32:40
Rank: #19921 (+120)
35K → 23M
11:49 | 9:26/mi
24M
3:42:19
Rank: #19916 (+5)
23M → 24M
9:39 | 9:39/mi
40K· 24.85 mi
3:50:30
Rank: #19874 (+42)
24M → 40K
8:11 | 9:34/mi
25.2M
3:54:09
Rank: #19865 (+9)
40K → 25.2M
3:39 | 10:35/mi
Finish· 26.22 mi
4:03:43
Rank: #19861 (+4)
25.2M → Finish
9:34 | 9:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:36
Pace8:44 /mi
2nd Half
Distance13.11 mi
Time2:09:07
Pace9:51 /mi
📊Positive Split: 12.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:1026:348:3326:34
8:33
-
10K
6.21 mi11:48:1552:398:2826:05
8:24
-0:09
15K
9.32 mi12:18:211:22:458:5330:06
9:41
+1:17
20K
12.43 mi12:44:311:48:558:4626:10
8:25
-1:16
Half
13.11 mi12:50:121:54:368:445:41
8:20
-0:05
25K
15.53 mi13:10:582:15:228:4320:46
8:34
+0:14
30K
18.64 mi13:44:022:48:269:0233:04
10:39
+2:05
20M
20.00 mi13:56:113:00:359:0212:09
8:56
-1:43
21M
21.00 mi14:09:573:14:219:1513:46
13:46
+4:50
35K
21.75 mi14:16:273:20:519:146:30
8:41
-5:05
23M
23.00 mi14:28:163:32:409:1511:49
9:26
+0:45
24M
24.00 mi14:37:553:42:199:169:39
9:39
+0:13
40K
24.85 mi14:46:063:50:309:168:11
9:34
-0:05
25.2M
25.20 mi14:49:453:54:099:183:39
10:35
+1:01
Finish
26.22 mi14:59:194:03:439:189:34
9:23
-1:12

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

8:20 /mi

Average Pace

9:18 /mi

Slowest Pace

13:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:46

46% of race

Time at Steady Pace

1:21:28

33% of race

Time at Slower Pace

50:29

21% of race

Average Pace: 9:18 /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 mi11:22:1026:348:3326:34
8:33
#17930
10K
6.21 mi11:48:1552:398:2826:05
8:24
#17747
15K
9.32 mi12:18:211:22:458:5330:06
9:41
#20030
20K
12.43 mi12:44:311:48:558:4626:10
8:25
#19143
Half
13.11 mi12:50:121:54:368:445:41
8:20
#19040
25K
15.53 mi13:10:582:15:228:4320:46
8:34
#18657
30K
18.64 mi13:44:022:48:269:0233:04
10:39
#19759
20M
20.00 mi13:56:113:00:359:0212:09
8:56
#19503
21M
21.00 mi14:09:573:14:219:1513:46
13:46
#20171
35K
21.75 mi14:16:273:20:519:146:30
8:41
#20041
23M
23.00 mi14:28:163:32:409:1511:49
9:26
#19921
24M
24.00 mi14:37:553:42:199:169:39
9:39
#19916
40K
24.85 mi14:46:063:50:309:168:11
9:34
#19874
25.2M
25.20 mi14:49:453:54:099:183:39
10:35
#19865
Finish
26.22 mi14:59:194:03:439:189:34
9:23
#19861
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi179306508650822772(Top 86%)9218(Top 81%)9218(Top 491%)
10K6.21 mi3.10 mi17747+1836374+1346374+13417575(Top 66%)6230(Top 55%)6230(Top 332%)
15K9.32 mi3.11 mi20030-22837758-13847758-138422772(Top 86%)9218(Top 81%)9218(Top 491%)
20K12.43 mi3.11 mi19143+8877202+5567202+55616393(Top 62%)5588(Top 49%)5588(Top 298%)
Half13.11 mi0.68 mi19040+1037147+557147+5516760(Top 63%)5771(Top 51%)5771(Top 307%)
25K15.53 mi2.42 mi18657+3836929+2186929+21816617(Top 62%)5791(Top 51%)5791(Top 308%)
30K18.64 mi3.11 mi19759-11027590-6617590-66122498(Top 85%)9183(Top 80%)9183(Top 489%)
20M20.00 mi1.36 mi19503+2567455+1357455+13516261(Top 61%)5732(Top 50%)5732(Top 305%)
21M21.00 mi1.00 mi20171-6687850-3957850-39524842(Top 93%)10523(Top 92%)10523(Top 560%)
35K21.75 mi0.75 mi20041+1307779+717779+7116408(Top 62%)5957(Top 52%)5957(Top 317%)
23M23.00 mi1.25 mi19921+1207719+607719+6018102(Top 68%)6929(Top 61%)6929(Top 369%)
24M24.00 mi1.00 mi19916+57723-47723-419737(Top 74%)7828(Top 69%)7828(Top 417%)
40K24.85 mi0.85 mi19874+427708+157708+1518592(Top 70%)7272(Top 64%)7272(Top 387%)
25.2M25.20 mi0.35 mi19865+97706+27706+219393(Top 73%)7727(Top 68%)7727(Top 411%)
Finish26.22 mi1.02 mi19861+47710-47710-419727(Top 74%)7851(Top 69%)7851(Top 418%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21stories
+97ft-345ft

Overall

22772

Females

9218

F40-44

9218

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

17575

Females

6230

F40-44

6230

10K→15K

6.2 - 9.3 mi

Top 86%
×3stories
+67ft-78ft

Overall

22772

Females

9218

F40-44

9218

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

16393

Females

5588

F40-44

5588

20K→Half

12.4 - 13.1 mi

Top 63%
×2stories
+19ft-37ft

Overall

16760

Females

5771

F40-44

5771

Half→25K

13.1 - 15.5 mi

Top 62%
×4stories
+66ft-88ft

Overall

16617

Females

5791

F40-44

5791

25K→30K

15.5 - 18.6 mi

Top 85%
×9stories
+181ft-148ft

Overall

22498

Females

9183

F40-44

9183

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

16261

Females

5732

F40-44

5732

20M→21M

20.0 - 21.0 mi

Top 93%
×8stories
+106ft-24ft

Overall

24842

Females

10523

F40-44

10523

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

16408

Females

5957

F40-44

5957

35K→23M

21.8 - 23.0 mi

Top 68%
×5stories
+23ft-63ft

Overall

18102

Females

6929

F40-44

6929

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

19737

Females

7828

F40-44

7828

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18592

Females

7272

F40-44

7272

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

19393

Females

7727

F40-44

7727

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

19727

Females

7851

F40-44

7851

Passing Analysis

Category:
Athletes Passed
2555
Passed By
4486
Net Change
-1931
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17930
5K → 10K424241+183#17930#17747
10K → 15K42287-2283#17747#20030
15K → 20K8881+887#20030#19143
20K → Half1030+103#19143#19040
Half → 25K3885+383#19040#18657
25K → 30K181120-1102#18657#19759
30K → 20M2582+256#19759#19503
20M → 21M3671-668#19503#20171
21M → 35K1322+130#20171#20041
35K → 23M13818+120#20041#19921
23M → 24M5651+5#19921#19916
24M → 40K7230+42#19916#19874
40K → 25.2M3122+9#19874#19865
25.2M → Finish4036+4#19865#19861
TOTALS25554486-1931
📊

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