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BOSTON MARATHON 2023

Alison Fleming

Bib: 13861•F

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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:22
Rank: #15212
Start → 5K
25:22 | 8:10/mi
10K· 6.21 mi
51:39
Rank: #16606 (-1394)
5K → 10K
26:17 | 8:28/mi
15K· 9.32 mi
1:19:28
Rank: #18024 (-1418)
10K → 15K
27:49 | 8:57/mi
20K· 12.43 mi
1:48:52
Rank: #19118 (-1094)
15K → 20K
29:24 | 9:28/mi
Half· 13.11 mi
1:54:57
Rank: #19166 (-48)
20K → Half
6:05 | 8:55/mi
25K· 15.53 mi
2:31:12
Rank: #22552 (-3386)
Half → 25K
36:15 | 14:57/mi
30K· 18.64 mi
3:19:57
Rank: #24214 (-1662)
25K → 30K
48:45 | 15:41/mi
20M
3:41:30
Rank: #24648 (-434)
30K → 20M
21:33 | 15:51/mi
21M
3:58:21
Rank: #24887 (-239)
20M → 21M
16:51 | 16:51/mi
35K· 21.75 mi
4:10:02
Rank: #25063 (-176)
21M → 35K
11:41 | 15:37/mi
23M
4:30:24
Rank: #25268 (-205)
35K → 23M
20:22 | 16:16/mi
24M
4:45:52
Rank: #25406 (-138)
23M → 24M
15:28 | 15:28/mi
40K· 24.85 mi
5:00:19
Rank: #25514 (-108)
24M → 40K
14:27 | 16:54/mi
25.2M
5:05:46
Rank: #25524 (-10)
40K → 25.2M
5:27 | 15:48/mi
Finish· 26.22 mi
5:19:09
Rank: #25563 (-39)
25.2M → Finish
13:23 | 13:08/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:57
Pace8:46 /mi
2nd Half
Distance13.11 mi
Time3:24:12
Pace15:35 /mi
📊Positive Split: 77.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:4225:228:1025:22
8:10
-
10K
6.21 mi11:19:5951:398:1926:17
8:28
+0:18
15K
9.32 mi11:47:481:19:288:3227:49
8:57
+0:29
20K
12.43 mi12:17:121:48:528:4629:24
9:28
+0:31
Half
13.11 mi12:23:171:54:578:466:05
8:55
-0:33
25K
15.53 mi12:59:322:31:129:4436:15
14:57
+6:02
30K
18.64 mi13:48:173:19:5710:4448:45
15:41
+0:44
20M
20.00 mi14:09:503:41:3011:0421:33
15:51
+0:10
21M
21.00 mi14:26:413:58:2111:2116:51
16:51
+1:00
35K
21.75 mi14:38:224:10:0211:3011:41
15:37
-1:14
23M
23.00 mi14:58:444:30:2411:4520:22
16:16
+0:39
24M
24.00 mi15:14:124:45:5211:5515:28
15:28
-0:48
40K
24.85 mi15:28:395:00:1912:0514:27
16:54
+1:26
25.2M
25.20 mi15:34:065:05:4612:085:27
15:48
-1:06
Finish
26.22 mi15:47:295:19:0912:1113:23
13:08
-2:40

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

8:10 /mi

Average Pace

12:11 /mi

Slowest Pace

16:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:20

40% of race

Time at Steady Pace

3:10:49

60% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 12:10 /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 mi10:53:4225:228:1025:22
8:10
#15212
10K
6.21 mi11:19:5951:398:1926:17
8:28
#16606
15K
9.32 mi11:47:481:19:288:3227:49
8:57
#18024
20K
12.43 mi12:17:121:48:528:4629:24
9:28
#19118
Half
13.11 mi12:23:171:54:578:466:05
8:55
#19166
25K
15.53 mi12:59:322:31:129:4436:15
14:57
#22552
30K
18.64 mi13:48:173:19:5710:4448:45
15:41
#24214
20M
20.00 mi14:09:503:41:3011:0421:33
15:51
#24648
21M
21.00 mi14:26:413:58:2111:2116:51
16:51
#24887
35K
21.75 mi14:38:224:10:0211:3011:41
15:37
#25063
23M
23.00 mi14:58:444:30:2411:4520:22
16:16
#25268
24M
24.00 mi15:14:124:45:5211:5515:28
15:28
#25406
40K
24.85 mi15:28:395:00:1912:0514:27
16:54
#25514
25.2M
25.20 mi15:34:065:05:4612:085:27
15:48
#25524
Finish
26.22 mi15:47:295:19:0912:1113:23
13:08
#25563
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi152124784478420295(Top 76%)7844(Top 69%)7844(Top 161%)
10K6.21 mi3.10 mi16606-13945649-8655649-86518014(Top 68%)6486(Top 57%)6486(Top 133%)
15K9.32 mi3.11 mi18024-14186545-8966545-89620295(Top 76%)7844(Top 69%)7844(Top 161%)
20K12.43 mi3.11 mi19118-10947186-6417186-64121450(Top 81%)8500(Top 74%)8500(Top 174%)
Half13.11 mi0.68 mi19166-487217-317217-3120123(Top 76%)7750(Top 68%)7750(Top 159%)
25K15.53 mi2.42 mi22552-33869134-19179134-191726544(Top 100%)11383(Top 100%)11383(Top 233%)
30K18.64 mi3.11 mi24214-166210054-92010054-92026540(Top 100%)11380(Top 100%)11380(Top 233%)
20M20.00 mi1.36 mi24648-43410298-24410298-24426468(Top 99%)11354(Top 99%)11354(Top 232%)
21M21.00 mi1.00 mi24887-23910442-14410442-14426410(Top 99%)11324(Top 99%)11324(Top 232%)
35K21.75 mi0.75 mi25063-17610550-10810550-10826498(Top 100%)11372(Top 100%)11372(Top 233%)
23M23.00 mi1.25 mi25268-20510669-11910669-11926520(Top 100%)11383(Top 100%)11383(Top 233%)
24M24.00 mi1.00 mi25406-13810745-7610745-7626473(Top 99%)11364(Top 99%)11364(Top 233%)
40K24.85 mi0.85 mi25514-10810811-6610811-6626523(Top 100%)11386(Top 100%)11386(Top 233%)
25.2M25.20 mi0.35 mi25524-1010821-1010821-1026056(Top 98%)11190(Top 98%)11190(Top 229%)
Finish26.22 mi1.02 mi25563-3910842-2110842-2126045(Top 98%)11193(Top 98%)11193(Top 229%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21stories
+97ft-345ft

Overall

20295

Females

7844

F18-39

7844

5K→10K

3.1 - 6.2 mi

Top 68%
×5stories
+79ft-138ft

Overall

18014

Females

6486

F18-39

6486

10K→15K

6.2 - 9.3 mi

Top 76%
×3stories
+67ft-78ft

Overall

20295

Females

7844

F18-39

7844

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

21450

Females

8500

F18-39

8500

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

20123

Females

7750

F18-39

7750

Half→25K

13.1 - 15.5 mi

Top 100%
×4stories
+66ft-88ft

Overall

26544

Females

11383

F18-39

11383

25K→30K

15.5 - 18.6 mi

Top 100%
×9stories
+181ft-148ft

Overall

26540

Females

11380

F18-39

11380

30K→20M

18.6 - 20.0 mi

Top 99%
×5stories
+64ft-50ft

Overall

26468

Females

11354

F18-39

11354

20M→21M

20.0 - 21.0 mi

Top 99%
×8stories
+106ft-24ft

Overall

26410

Females

11324

F18-39

11324

21M→35K

21.0 - 21.8 mi

Top 100%
×7stories
+17ft-86ft

Overall

26498

Females

11372

F18-39

11372

35K→23M

21.8 - 23.0 mi

Top 100%
×5stories
+23ft-63ft

Overall

26520

Females

11383

F18-39

11383

23M→24M

23.0 - 24.0 mi

Top 99%
×6stories
+12ft-82ft

Overall

26473

Females

11364

F18-39

11364

24M→40K

24.0 - 24.9 mi

Top 100%
×1story
+6ft-20ft

Overall

26523

Females

11386

F18-39

11386

40K→25.2M

24.9 - 25.2 mi

Top 98%
×1story
+13ft-16ft

Overall

26056

Females

11190

F18-39

11190

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2stories
+22ft-21ft

Overall

26045

Females

11193

F18-39

11193

Passing Analysis

Category:
Athletes Passed
100
Passed By
10451
Net Change
-10351
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15212
5K → 10K241418-1394#15212#16606
10K → 15K191437-1418#16606#18024
15K → 20K161110-1094#18024#19118
20K → Half1260-48#19118#19166
Half → 25K13387-3386#19166#22552
25K → 30K11663-1662#22552#24214
30K → 20M4438-434#24214#24648
20M → 21M1240-239#24648#24887
21M → 35K3179-176#24887#25063
35K → 23M2207-205#25063#25268
23M → 24M2140-138#25268#25406
24M → 40K5113-108#25406#25514
40K → 25.2M616-10#25514#25524
25.2M → Finish443-39#25524#25563
TOTALS10010451-10351
📊

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