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BOSTON MARATHON 2023

Erin James

Bib: 16072•F

NH

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 48%
Gender (Female)
#0 / 11423
Top 32%
Division (F18-39)
#0 / 4884
Top 50%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:27
Rank: #15409
Start → 5K
25:27 | 8:11/mi
10K· 6.21 mi
50:43
Rank: #15555 (-146)
5K → 10K
25:16 | 8:08/mi
15K· 9.32 mi
1:17:25
Rank: #16560 (-1005)
10K → 15K
26:42 | 8:36/mi
20K· 12.43 mi
1:41:58
Rank: #15610 (+950)
15K → 20K
24:33 | 7:54/mi
Half· 13.11 mi
1:47:24
Rank: #15528 (+82)
20K → Half
5:26 | 7:58/mi
25K· 15.53 mi
2:07:13
Rank: #15281 (+247)
Half → 25K
19:49 | 8:10/mi
30K· 18.64 mi
2:32:34
Rank: #14688 (+593)
25K → 30K
25:21 | 8:10/mi
20M
2:43:46
Rank: #14470 (+218)
30K → 20M
11:12 | 8:15/mi
21M
2:52:13
Rank: #14220 (+250)
20M → 21M
8:27 | 8:27/mi
35K· 21.75 mi
2:58:08
Rank: #14095 (+125)
21M → 35K
5:55 | 7:55/mi
23M
3:08:16
Rank: #13856 (+239)
35K → 23M
10:08 | 8:06/mi
24M
3:16:03
Rank: #13648 (+208)
23M → 24M
7:47 | 7:47/mi
40K· 24.85 mi
3:22:34
Rank: #13369 (+279)
24M → 40K
6:31 | 7:37/mi
25.2M
3:25:13
Rank: #13209 (+160)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
3:32:13
Rank: #12861 (+348)
25.2M → Finish
7:00 | 6:52/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:47:24
Pace8:12 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:44:49
Pace8:00 /mi
📊Negative Split: 2.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:4625:278:1125:27
8:11
-
10K
6.21 mi11:41:0250:438:1025:16
8:08
-0:03
15K
9.32 mi12:07:441:17:258:1826:42
8:36
+0:28
20K
12.43 mi12:32:171:41:588:1224:33
7:54
-0:42
Half
13.11 mi12:37:431:47:248:125:26
7:58
+0:04
25K
15.53 mi12:57:322:07:138:1119:49
8:10
+0:12
30K
18.64 mi13:22:532:32:348:1125:21
8:10
0:00
20M
20.00 mi13:34:052:43:468:1111:12
8:15
+0:05
21M
21.00 mi13:42:322:52:138:128:27
8:27
+0:12
35K
21.75 mi13:48:272:58:088:115:55
7:55
-0:32
23M
23.00 mi13:58:353:08:168:1110:08
8:06
+0:11
24M
24.00 mi14:06:223:16:038:107:47
7:47
-0:19
40K
24.85 mi14:12:533:22:348:096:31
7:37
-0:10
25.2M
25.20 mi14:15:323:25:138:092:39
7:41
+0:04
Finish
26.22 mi14:22:323:32:138:067:00
6:52
-0:49

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

6:52 /mi

Average Pace

8:06 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

48:30

23% of race

Time at Steady Pace

2:08:34

61% of race

Time at Slower Pace

35:09

17% of race

Average Pace: 8:06 /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 mi11:15:4625:278:1125:27
8:11
#15409
10K
6.21 mi11:41:0250:438:1025:16
8:08
#15555
15K
9.32 mi12:07:441:17:258:1826:42
8:36
#16560
20K
12.43 mi12:32:171:41:588:1224:33
7:54
#15610
Half
13.11 mi12:37:431:47:248:125:26
7:58
#15528
25K
15.53 mi12:57:322:07:138:1119:49
8:10
#15281
30K
18.64 mi13:22:532:32:348:1125:21
8:10
#14688
20M
20.00 mi13:34:052:43:468:1111:12
8:15
#14470
21M
21.00 mi13:42:322:52:138:128:27
8:27
#14220
35K
21.75 mi13:48:272:58:088:115:55
7:55
#14095
23M
23.00 mi13:58:353:08:168:1110:08
8:06
#13856
24M
24.00 mi14:06:223:16:038:107:47
7:47
#13648
40K
24.85 mi14:12:533:22:348:096:31
7:37
#13369
25.2M
25.20 mi14:15:323:25:138:092:39
7:41
#13209
Finish
26.22 mi14:22:323:32:138:067:00
6:52
#12861
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi154094903490318398(Top 69%)6730(Top 59%)6730(Top 138%)
10K6.21 mi3.10 mi15555-1464998-954998-9515760(Top 59%)5115(Top 45%)5115(Top 105%)
15K9.32 mi3.11 mi16560-10055639-6415639-64118398(Top 69%)6730(Top 59%)6730(Top 138%)
20K12.43 mi3.11 mi15610+9505063+5765063+57612651(Top 48%)3353(Top 29%)3353(Top 69%)
Half13.11 mi0.68 mi15528+825012+515012+5114090(Top 53%)4121(Top 36%)4121(Top 84%)
25K15.53 mi2.42 mi15281+2474886+1264886+12614052(Top 53%)4255(Top 37%)4255(Top 87%)
30K18.64 mi3.11 mi14688+5934543+3434543+34312076(Top 45%)3225(Top 28%)3225(Top 66%)
20M20.00 mi1.36 mi14470+2184461+824461+8211983(Top 45%)3269(Top 29%)3269(Top 67%)
21M21.00 mi1.00 mi14220+2504323+1384323+13810223(Top 38%)2498(Top 22%)2498(Top 51%)
35K21.75 mi0.75 mi14095+1254256+674256+6711522(Top 43%)3162(Top 28%)3162(Top 65%)
23M23.00 mi1.25 mi13856+2394136+1204136+12010452(Top 39%)2746(Top 24%)2746(Top 56%)
24M24.00 mi1.00 mi13648+2084030+1064030+1069724(Top 37%)2473(Top 22%)2473(Top 51%)
40K24.85 mi0.85 mi13369+2793883+1473883+1477507(Top 28%)1580(Top 14%)1580(Top 32%)
25.2M25.20 mi0.35 mi13209+1603802+813802+814912(Top 18%)719(Top 6%)719(Top 15%)
Finish26.22 mi1.02 mi12861+3483619+1833619+1834496(Top 17%)589(Top 5%)589(Top 12%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

18398

Females

6730

F18-39

6730

5K→10K

3.1 - 6.2 mi

Top 59%
×5stories
+79ft-138ft

Overall

15760

Females

5115

F18-39

5115

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

18398

Females

6730

F18-39

6730

15K→20K

9.3 - 12.4 mi

Top 48%
×5stories
+106ft-86ft

Overall

12651

Females

3353

F18-39

3353

20K→Half

12.4 - 13.1 mi

Top 53%
×2stories
+19ft-37ft

Overall

14090

Females

4121

F18-39

4121

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

14052

Females

4255

F18-39

4255

25K→30K

15.5 - 18.6 mi

Top 45%
×9stories
+181ft-148ft

Overall

12076

Females

3225

F18-39

3225

30K→20M

18.6 - 20.0 mi

Top 45%
×5stories
+64ft-50ft

Overall

11983

Females

3269

F18-39

3269

20M→21M

20.0 - 21.0 mi

Top 38%
×8stories
+106ft-24ft

Overall

10223

Females

2498

F18-39

2498

21M→35K

21.0 - 21.8 mi

Top 43%
×7stories
+17ft-86ft

Overall

11522

Females

3162

F18-39

3162

35K→23M

21.8 - 23.0 mi

Top 39%
×5stories
+23ft-63ft

Overall

10452

Females

2746

F18-39

2746

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

9724

Females

2473

F18-39

2473

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7507

Females

1580

F18-39

1580

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4912

Females

719

F18-39

719

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4496

Females

589

F18-39

589

Passing Analysis

Category:
Athletes Passed
4033
Passed By
1485
Net Change
+2548
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15409
5K → 10K231377-146#15409#15555
10K → 15K251030-1005#15555#16560
15K → 20K9522+950#16560#15610
20K → Half864+82#15610#15528
Half → 25K27932+247#15528#15281
25K → 30K60310+593#15281#14688
30K → 20M22810+218#14688#14470
20M → 21M2533+250#14470#14220
21M → 35K1316+125#14220#14095
35K → 23M2478+239#14095#13856
23M → 24M2113+208#13856#13648
24M → 40K2790+279#13648#13369
40K → 25.2M1600+160#13369#13209
25.2M → Finish3480+348#13209#12861
TOTALS40331485+2548
📊

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