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BOSTON MARATHON 2023

Erin Duffey

Bib: 26883•F

MA

0:00
0:00
/ mi
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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
32:14
Rank: #24420
Start → 5K
32:14 | 10:22/mi
10K· 6.21 mi
1:02:27
Rank: #23737 (+683)
5K → 10K
30:13 | 9:44/mi
15K· 9.32 mi
1:31:13
Rank: #23117 (+620)
10K → 15K
28:46 | 9:16/mi
20K· 12.43 mi
1:59:49
Rank: #22521 (+596)
15K → 20K
28:36 | 9:12/mi
Half· 13.11 mi
2:06:07
Rank: #22466 (+55)
20K → Half
6:18 | 9:14/mi
25K· 15.53 mi
2:28:45
Rank: #22117 (+349)
Half → 25K
22:38 | 9:20/mi
30K· 18.64 mi
2:59:07
Rank: #21775 (+342)
25K → 30K
30:22 | 9:46/mi
20M
3:12:50
Rank: #21709 (+66)
30K → 20M
13:43 | 10:06/mi
21M
3:23:29
Rank: #21616 (+93)
20M → 21M
10:39 | 10:39/mi
35K· 21.75 mi
3:31:09
Rank: #21635 (-19)
21M → 35K
7:40 | 10:15/mi
23M
3:44:35
Rank: #21641 (-6)
35K → 23M
13:26 | 10:44/mi
24M
3:55:10
Rank: #21687 (-46)
23M → 24M
10:35 | 10:35/mi
40K· 24.85 mi
4:04:15
Rank: #21679 (+8)
24M → 40K
9:05 | 10:37/mi
25.2M
4:07:51
Rank: #21645 (+34)
40K → 25.2M
3:36 | 10:26/mi
Finish· 26.22 mi
4:17:30
Rank: #21579 (+66)
25.2M → Finish
9:39 | 9:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:07
Pace9:37 /mi
2nd Half
Distance13.11 mi
Time2:11:23
Pace10:01 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:1232:1410:2232:14
10:22
-
10K
6.21 mi12:20:251:02:2710:0330:13
9:44
-0:38
15K
9.32 mi12:49:111:31:139:4728:46
9:16
-0:28
20K
12.43 mi13:17:471:59:499:3828:36
9:12
-0:04
Half
13.11 mi13:24:052:06:079:376:18
9:14
+0:02
25K
15.53 mi13:46:432:28:459:3522:38
9:20
+0:06
30K
18.64 mi14:17:052:59:079:3730:22
9:46
+0:26
20M
20.00 mi14:30:483:12:509:3813:43
10:06
+0:20
21M
21.00 mi14:41:273:23:299:4110:39
10:39
+0:33
35K
21.75 mi14:49:073:31:099:437:40
10:15
-0:24
23M
23.00 mi15:02:333:44:359:4613:26
10:44
+0:29
24M
24.00 mi15:13:083:55:109:4810:35
10:35
-0:09
40K
24.85 mi15:22:134:04:159:509:05
10:37
+0:02
25.2M
25.20 mi15:25:494:07:519:503:36
10:26
-0:11
Finish
26.22 mi15:35:284:17:309:509:39
9:28
-0:58

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

9:12 /mi

Average Pace

9:50 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:15

66% of race

Time at Steady Pace

1:27:15

34% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:49 /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 mi11:50:1232:1410:2232:14
10:22
#24420
10K
6.21 mi12:20:251:02:2710:0330:13
9:44
#23737
15K
9.32 mi12:49:111:31:139:4728:46
9:16
#23117
20K
12.43 mi13:17:471:59:499:3828:36
9:12
#22521
Half
13.11 mi13:24:052:06:079:376:18
9:14
#22466
25K
15.53 mi13:46:432:28:459:3522:38
9:20
#22117
30K
18.64 mi14:17:052:59:079:3730:22
9:46
#21775
20M
20.00 mi14:30:483:12:509:3813:43
10:06
#21709
21M
21.00 mi14:41:273:23:299:4110:39
10:39
#21616
35K
21.75 mi14:49:073:31:099:437:40
10:15
#21635
23M
23.00 mi15:02:333:44:359:4613:26
10:44
#21641
24M
24.00 mi15:13:083:55:109:4810:35
10:35
#21687
40K
24.85 mi15:22:134:04:159:509:05
10:37
#21679
25.2M
25.20 mi15:25:494:07:519:503:36
10:26
#21645
Finish
26.22 mi15:35:284:17:309:509:39
9:28
#21579
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24420101091010921511(Top 81%)8506(Top 74%)8506(Top 174%)
10K6.21 mi3.10 mi23737+6839750+3599750+35923104(Top 87%)9388(Top 82%)9388(Top 192%)
15K9.32 mi3.11 mi23117+6209412+3389412+33821511(Top 81%)8506(Top 74%)8506(Top 174%)
20K12.43 mi3.11 mi22521+5969103+3099103+30920607(Top 77%)8014(Top 70%)8014(Top 164%)
Half13.11 mi0.68 mi22466+559069+349069+3421305(Top 80%)8416(Top 74%)8416(Top 172%)
25K15.53 mi2.42 mi22117+3498893+1768893+17620320(Top 76%)7881(Top 69%)7881(Top 161%)
30K18.64 mi3.11 mi21775+3428705+1888705+18820386(Top 77%)7992(Top 70%)7992(Top 164%)
20M20.00 mi1.36 mi21709+668681+248681+2420741(Top 78%)8275(Top 72%)8275(Top 169%)
21M21.00 mi1.00 mi21616+938641+408641+4020026(Top 75%)7949(Top 70%)7949(Top 163%)
35K21.75 mi0.75 mi21635-198665-248665-2421887(Top 82%)8986(Top 79%)8986(Top 184%)
23M23.00 mi1.25 mi21641-68682-178682-1721840(Top 82%)8988(Top 79%)8988(Top 184%)
24M24.00 mi1.00 mi21687-468718-368718-3622205(Top 83%)9210(Top 81%)9210(Top 189%)
40K24.85 mi0.85 mi21679+88725-78725-721530(Top 81%)8904(Top 78%)8904(Top 182%)
25.2M25.20 mi0.35 mi21645+348710+158710+1518966(Top 71%)7507(Top 66%)7507(Top 154%)
Finish26.22 mi1.02 mi21579+668682+288682+2820038(Top 75%)8023(Top 70%)8023(Top 164%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21stories
+97ft-345ft

Overall

21511

Females

8506

F18-39

8506

5K→10K

3.1 - 6.2 mi

Top 87%
×5stories
+79ft-138ft

Overall

23104

Females

9388

F18-39

9388

10K→15K

6.2 - 9.3 mi

Top 81%
×3stories
+67ft-78ft

Overall

21511

Females

8506

F18-39

8506

15K→20K

9.3 - 12.4 mi

Top 77%
×5stories
+106ft-86ft

Overall

20607

Females

8014

F18-39

8014

20K→Half

12.4 - 13.1 mi

Top 80%
×2stories
+19ft-37ft

Overall

21305

Females

8416

F18-39

8416

Half→25K

13.1 - 15.5 mi

Top 76%
×4stories
+66ft-88ft

Overall

20320

Females

7881

F18-39

7881

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

20386

Females

7992

F18-39

7992

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

20741

Females

8275

F18-39

8275

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

20026

Females

7949

F18-39

7949

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

21887

Females

8986

F18-39

8986

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

21840

Females

8988

F18-39

8988

23M→24M

23.0 - 24.0 mi

Top 83%
×6stories
+12ft-82ft

Overall

22205

Females

9210

F18-39

9210

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

21530

Females

8904

F18-39

8904

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

18966

Females

7507

F18-39

7507

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

20038

Females

8023

F18-39

8023

Passing Analysis

Category:
Athletes Passed
3173
Passed By
332
Net Change
+2841
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24420
5K → 10K70522+683#24420#23737
10K → 15K6222+620#23737#23117
15K → 20K5960+596#23117#22521
20K → Half594+55#22521#22466
Half → 25K3512+349#22466#22117
25K → 30K35917+342#22117#21775
30K → 20M9731+66#21775#21709
20M → 21M11017+93#21709#21616
21M → 35K3150-19#21616#21635
35K → 23M5965-6#21635#21641
23M → 24M2975-46#21641#21687
24M → 40K4234+8#21687#21679
40K → 25.2M362+34#21679#21645
25.2M → Finish7711+66#21645#21579
TOTALS3173332+2841
📊

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