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BOSTON MARATHON 2023

Shannon Dunlay

Bib: 18631•F

MN

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 48%
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
25:48
Rank: #16199
Start → 5K
8:18/mi
25:48 split
10K· 6.21 mi
51:38
Rank: #16586 (-387)
5K → 10K
8:19/mi
25:50 split
15K· 9.32 mi
1:17:30
Rank: #16623 (-37)
10K → 15K
8:20/mi
25:52 split
20K· 12.43 mi
1:43:49
Rank: #16656 (-33)
15K → 20K
8:28/mi
26:19 split
Half· 13.11 mi
1:49:32
Rank: #16670 (-14)
20K → Half
8:23/mi
5:43 split
25K· 15.53 mi
2:10:30
Rank: #16744 (-74)
Half → 25K
8:39/mi
20:58 split
30K· 18.64 mi
2:38:48
Rank: #16889 (-145)
25K → 30K
9:07/mi
28:18 split
20M
2:51:21
Rank: #16936 (-47)
30K → 20M
9:14/mi
12:33 split
21M
3:01:46
Rank: #17129 (-193)
20M → 21M
10:25/mi
10:25 split
35K· 21.75 mi
3:08:24
Rank: #17133 (-4)
21M → 35K
8:52/mi
6:38 split
23M
3:20:15
Rank: #17214 (-81)
35K → 23M
9:28/mi
11:51 split
24M
3:29:45
Rank: #17349 (-135)
23M → 24M
9:30/mi
9:30 split
40K· 24.85 mi
3:38:14
Rank: #17483 (-134)
24M → 40K
9:55/mi
8:29 split
25.2M
3:41:53
Rank: #17547 (-64)
40K → 25.2M
10:35/mi
3:39 split
Finish· 26.22 mi
3:51:14
Rank: #17614 (-67)
25.2M → Finish
9:11/mi
9:21 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:32
Pace8:21 /mi
2nd Half
Distance13.11 mi
Time2:01:42
Pace9:17 /mi
📊Positive Split: 11.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:0625:488:1825:48
8:18
-
10K
6.21 mi11:46:5651:388:1925:50
8:19
+0:01
15K
9.32 mi12:12:481:17:308:1925:52
8:20
+0:01
20K
12.43 mi12:39:071:43:498:2126:19
8:28
+0:08
Half
13.11 mi12:44:501:49:328:215:43
8:23
-0:05
25K
15.53 mi13:05:482:10:308:2420:58
8:39
+0:16
30K
18.64 mi13:34:062:38:488:3128:18
9:07
+0:28
20M
20.00 mi13:46:392:51:218:3412:33
9:14
+0:07
21M
21.00 mi13:57:043:01:468:3910:25
10:25
+1:11
35K
21.75 mi14:03:423:08:248:406:38
8:52
-1:33
23M
23.00 mi14:15:333:20:158:4211:51
9:28
+0:36
24M
24.00 mi14:25:033:29:458:449:30
9:30
+0:02
40K
24.85 mi14:33:323:38:148:478:29
9:55
+0:25
25.2M
25.20 mi14:37:113:41:538:483:39
10:35
+0:40
Finish
26.22 mi14:46:323:51:148:509:21
9:11
-1:24

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

8:18 /mi

Average Pace

8:50 /mi

Slowest Pace

10:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:30

56% of race

Time at Steady Pace

1:08:41

30% of race

Time at Slower Pace

32:03

14% of race

Average Pace: 8:49 /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 mi11:21:0625:488:1825:48
8:18
#16199
10K
6.21 mi11:46:5651:388:1925:50
8:19
#16586
15K
9.32 mi12:12:481:17:308:1925:52
8:20
#16623
20K
12.43 mi12:39:071:43:498:2126:19
8:28
#16656
Half
13.11 mi12:44:501:49:328:215:43
8:23
#16670
25K
15.53 mi13:05:482:10:308:2420:58
8:39
#16744
30K
18.64 mi13:34:062:38:488:3128:18
9:07
#16889
20M
20.00 mi13:46:392:51:218:3412:33
9:14
#16936
21M
21.00 mi13:57:043:01:468:3910:25
10:25
#17129
35K
21.75 mi14:03:423:08:248:406:38
8:52
#17133
23M
23.00 mi14:15:333:20:158:4211:51
9:28
#17214
24M
24.00 mi14:25:033:29:458:449:30
9:30
#17349
40K
24.85 mi14:33:323:38:148:478:29
9:55
#17483
25.2M
25.20 mi14:37:113:41:538:483:39
10:35
#17547
Finish
26.22 mi14:46:323:51:148:509:21
9:11
#17614
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi161995409540916713(Top 63%)5741(Top 50%)5741(Top 306%)
10K6.21 mi3.10 mi16586-3875633-2245633-22417048(Top 64%)5903(Top 52%)5903(Top 314%)
15K9.32 mi3.11 mi16623-375678-455678-4516713(Top 63%)5741(Top 50%)5741(Top 306%)
20K12.43 mi3.11 mi16656-335712-345712-3416685(Top 63%)5750(Top 50%)5750(Top 306%)
Half13.11 mi0.68 mi16670-145728-165728-1617071(Top 64%)5950(Top 52%)5950(Top 317%)
25K15.53 mi2.42 mi16744-745798-705798-7017106(Top 64%)6067(Top 53%)6067(Top 323%)
30K18.64 mi3.11 mi16889-1455890-925890-9217739(Top 67%)6485(Top 57%)6485(Top 345%)
20M20.00 mi1.36 mi16936-475933-435933-4317733(Top 67%)6597(Top 58%)6597(Top 351%)
21M21.00 mi1.00 mi17129-1936066-1336066-13319315(Top 73%)7523(Top 66%)7523(Top 401%)
35K21.75 mi0.75 mi17133-46076-106076-1017306(Top 65%)6446(Top 56%)6446(Top 343%)
23M23.00 mi1.25 mi17214-816146-706146-7018192(Top 68%)6966(Top 61%)6966(Top 371%)
24M24.00 mi1.00 mi17349-1356239-936239-9319213(Top 72%)7562(Top 66%)7562(Top 403%)
40K24.85 mi0.85 mi17483-1346334-956334-9519758(Top 74%)7922(Top 69%)7922(Top 422%)
25.2M25.20 mi0.35 mi17547-646376-426376-4219370(Top 73%)7704(Top 67%)7704(Top 410%)
Finish26.22 mi1.02 mi17614-676427-516427-5118817(Top 71%)7339(Top 64%)7339(Top 391%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

16713

Females

5741

F40-44

5741

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

17048

Females

5903

F40-44

5903

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

16713

Females

5741

F40-44

5741

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

16685

Females

5750

F40-44

5750

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

17071

Females

5950

F40-44

5950

Half→25K

13.1 - 15.5 mi

Top 64%
×4story building
+66ft-88ft

Overall

17106

Females

6067

F40-44

6067

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

17739

Females

6485

F40-44

6485

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

17733

Females

6597

F40-44

6597

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

19315

Females

7523

F40-44

7523

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

17306

Females

6446

F40-44

6446

35K→23M

21.8 - 23.0 mi

Top 68%
×5story building
+23ft-63ft

Overall

18192

Females

6966

F40-44

6966

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

19213

Females

7562

F40-44

7562

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

19758

Females

7922

F40-44

7922

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

19370

Females

7704

F40-44

7704

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2story building
+22ft-21ft

Overall

18817

Females

7339

F40-44

7339

Passing Analysis

Category:
Athletes Passed
1058
Passed By
2473
Net Change
-1415
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16199
5K → 10K142529-387#16199#16586
10K → 15K187224-37#16586#16623
15K → 20K161194-33#16623#16656
20K → Half2539-14#16656#16670
Half → 25K107181-74#16670#16744
25K → 30K131276-145#16744#16889
30K → 20M58105-47#16889#16936
20M → 21M39232-193#16936#17129
21M → 35K4246-4#17129#17133
35K → 23M60141-81#17133#17214
23M → 24M30165-135#17214#17349
24M → 40K20154-134#17349#17483
40K → 25.2M1882-64#17483#17547
25.2M → Finish38105-67#17547#17614
TOTALS10582473-1415
📊

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