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BOSTON MARATHON 2023

Allison James

Bib: 8174•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 14%
Gender (Female)
#0 / 11423
Top 2%
Division (F18-39)
#0 / 4884
Top 4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:41
Rank: #3309
Start → 5K
20:41 | 6:39/mi
10K· 6.21 mi
41:38
Rank: #3990 (-681)
5K → 10K
20:57 | 6:45/mi
15K· 9.32 mi
1:02:30
Rank: #4074 (-84)
10K → 15K
20:52 | 6:43/mi
20K· 12.43 mi
1:23:27
Rank: #4015 (+59)
15K → 20K
20:57 | 6:45/mi
Half· 13.11 mi
1:27:57
Rank: #3976 (+39)
20K → Half
4:30 | 6:36/mi
25K· 15.53 mi
1:44:25
Rank: #3980 (-4)
Half → 25K
16:28 | 6:47/mi
30K· 18.64 mi
2:05:57
Rank: #3916 (+64)
25K → 30K
21:32 | 6:56/mi
20M
2:15:14
Rank: #3789 (+127)
30K → 20M
9:17 | 6:50/mi
21M
2:22:27
Rank: #3730 (+59)
20M → 21M
7:13 | 7:13/mi
35K· 21.75 mi
2:27:33
Rank: #3732 (-2)
21M → 35K
5:06 | 6:49/mi
23M
2:36:14
Rank: #3685 (+47)
35K → 23M
8:41 | 6:56/mi
24M
2:43:03
Rank: #3665 (+20)
23M → 24M
6:49 | 6:49/mi
40K· 24.85 mi
2:48:57
Rank: #3628 (+37)
24M → 40K
5:54 | 6:54/mi
25.2M
2:51:33
Rank: #3637 (-9)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
2:58:20
Rank: #3598 (+39)
25.2M → Finish
6:47 | 6:39/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:57
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:30:23
Pace6:54 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:4320:416:3920:41
6:39
-
10K
6.21 mi11:06:4041:386:4220:57
6:45
+0:06
15K
9.32 mi11:27:321:02:306:4220:52
6:43
-0:02
20K
12.43 mi11:48:291:23:276:4320:57
6:45
+0:02
Half
13.11 mi11:52:591:27:576:434:30
6:36
-0:09
25K
15.53 mi12:09:271:44:256:4316:28
6:47
+0:11
30K
18.64 mi12:30:592:05:576:4521:32
6:56
+0:09
20M
20.00 mi12:40:162:15:146:469:17
6:50
-0:06
21M
21.00 mi12:47:292:22:276:477:13
7:13
+0:23
35K
21.75 mi12:52:352:27:336:475:06
6:49
-0:24
23M
23.00 mi13:01:162:36:146:488:41
6:56
+0:07
24M
24.00 mi13:08:052:43:036:486:49
6:49
-0:07
40K
24.85 mi13:13:592:48:576:485:54
6:54
+0:05
25.2M
25.20 mi13:16:352:51:336:482:36
7:32
+0:38
Finish
26.22 mi13:23:222:58:206:486:47
6:39
-0:53

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

6:36 /mi

Average Pace

6:48 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:44

99% of race

Time at Steady Pace

2:36

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:48 /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 mi10:45:4320:416:3920:41
6:39
#3309
10K
6.21 mi11:06:4041:386:4220:57
6:45
#3990
15K
9.32 mi11:27:321:02:306:4220:52
6:43
#4074
20K
12.43 mi11:48:291:23:276:4320:57
6:45
#4015
Half
13.11 mi11:52:591:27:576:434:30
6:36
#3976
25K
15.53 mi12:09:271:44:256:4316:28
6:47
#3980
30K
18.64 mi12:30:592:05:576:4521:32
6:56
#3916
20M
20.00 mi12:40:162:15:146:469:17
6:50
#3789
21M
21.00 mi12:47:292:22:276:477:13
7:13
#3730
35K
21.75 mi12:52:352:27:336:475:06
6:49
#3732
23M
23.00 mi13:01:162:36:146:488:41
6:56
#3685
24M
24.00 mi13:08:052:43:036:486:49
6:49
#3665
40K
24.85 mi13:13:592:48:576:485:54
6:54
#3628
25.2M
25.20 mi13:16:352:51:336:482:36
7:32
#3637
Finish
26.22 mi13:23:222:58:206:486:47
6:39
#3598
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi33091831834306(Top 16%)267(Top 2%)267(Top 5%)
10K6.21 mi3.10 mi3990-681232-49232-494773(Top 18%)331(Top 3%)331(Top 7%)
15K9.32 mi3.11 mi4074-84241-9241-94306(Top 16%)267(Top 2%)267(Top 5%)
20K12.43 mi3.11 mi4015+59236+5236+53941(Top 15%)226(Top 2%)226(Top 5%)
Half13.11 mi0.68 mi3976+39232+4232+43480(Top 13%)180(Top 2%)180(Top 4%)
25K15.53 mi2.42 mi3980-42322324093(Top 15%)252(Top 2%)252(Top 5%)
30K18.64 mi3.11 mi3916+64221+11221+113890(Top 15%)246(Top 2%)246(Top 5%)
20M20.00 mi1.36 mi3789+127210+11210+113050(Top 11%)182(Top 2%)182(Top 4%)
21M21.00 mi1.00 mi3730+59207+3207+33237(Top 12%)213(Top 2%)213(Top 4%)
35K21.75 mi0.75 mi3732-2211-4211-44353(Top 16%)362(Top 3%)362(Top 7%)
23M23.00 mi1.25 mi3685+47208+3208+33472(Top 13%)251(Top 2%)251(Top 5%)
24M24.00 mi1.00 mi3665+20207+1207+13769(Top 14%)313(Top 3%)313(Top 6%)
40K24.85 mi0.85 mi3628+37209-2209-23361(Top 13%)284(Top 2%)284(Top 6%)
25.2M25.20 mi0.35 mi3637-9212-3212-34135(Top 16%)461(Top 4%)461(Top 9%)
Finish26.22 mi1.02 mi3598+39210+2210+23304(Top 12%)327(Top 3%)327(Top 7%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4306

Females

267

F18-39

267

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4773

Females

331

F18-39

331

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4306

Females

267

F18-39

267

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

3941

Females

226

F18-39

226

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3480

Females

180

F18-39

180

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4093

Females

252

F18-39

252

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

3890

Females

246

F18-39

246

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

3050

Females

182

F18-39

182

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3237

Females

213

F18-39

213

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4353

Females

362

F18-39

362

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3472

Females

251

F18-39

251

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3769

Females

313

F18-39

313

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3361

Females

284

F18-39

284

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4135

Females

461

F18-39

461

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3304

Females

327

F18-39

327

Passing Analysis

Category:
Athletes Passed
1077
Passed By
1366
Net Change
-289
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3309
5K → 10K36717-681#3309#3990
10K → 15K87171-84#3990#4074
15K → 20K14081+59#4074#4015
20K → Half412+39#4015#3976
Half → 25K7680-4#3976#3980
25K → 30K14177+64#3980#3916
30K → 20M13811+127#3916#3789
20M → 21M8728+59#3789#3730
21M → 35K2729-2#3730#3732
35K → 23M8942+47#3732#3685
23M → 24M5838+20#3685#3665
24M → 40K6225+37#3665#3628
40K → 25.2M2029-9#3628#3637
25.2M → Finish7536+39#3637#3598
TOTALS10771366-289
📊

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