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BOSTON MARATHON 2023

Erin Delong

Bib: 12632•F

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0:00
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 25%
Division (F18-39)
#0 / 4884
Top 42%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:47
Rank: #11077
Start → 5K
23:47 | 7:39/mi
10K· 6.21 mi
47:03
Rank: #10667 (+410)
5K → 10K
23:16 | 7:29/mi
15K· 9.32 mi
1:10:24
Rank: #10533 (+134)
10K → 15K
23:21 | 7:31/mi
20K· 12.43 mi
1:33:38
Rank: #10142 (+391)
15K → 20K
23:14 | 7:29/mi
Half· 13.11 mi
1:38:37
Rank: #10037 (+105)
20K → Half
4:59 | 7:18/mi
25K· 15.53 mi
1:56:40
Rank: #9741 (+296)
Half → 25K
18:03 | 7:27/mi
30K· 18.64 mi
2:20:22
Rank: #9400 (+341)
25K → 30K
23:42 | 7:38/mi
20M
2:30:44
Rank: #9255 (+145)
30K → 20M
10:22 | 7:38/mi
21M
2:38:50
Rank: #9132 (+123)
20M → 21M
8:06 | 8:06/mi
35K· 21.75 mi
2:44:22
Rank: #9073 (+59)
21M → 35K
5:32 | 7:24/mi
23M
3:02:02
Rank: #11775 (-2702)
35K → 23M
17:40 | 14:07/mi
24M
3:09:45
Rank: #11634 (+141)
23M → 24M
7:43 | 7:43/mi
40K· 24.85 mi
3:16:37
Rank: #11580 (+54)
24M → 40K
6:52 | 8:02/mi
25.2M
3:19:42
Rank: #11570 (+10)
40K → 25.2M
3:05 | 8:56/mi
Finish· 26.22 mi
3:27:40
Rank: #11506 (+64)
25.2M → Finish
7:58 | 7:49/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:37
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:49:03
Pace8:19 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0423:477:3923:47
7:39
-
10K
6.21 mi11:14:2047:037:3423:16
7:29
-0:10
15K
9.32 mi11:37:411:10:247:3323:21
7:31
+0:02
20K
12.43 mi12:00:551:33:387:3223:14
7:29
-0:02
Half
13.11 mi12:05:541:38:377:314:59
7:18
-0:11
25K
15.53 mi12:23:571:56:407:3118:03
7:27
+0:09
30K
18.64 mi12:47:392:20:227:3223:42
7:38
+0:11
20M
20.00 mi12:58:012:30:447:3210:22
7:38
0:00
21M
21.00 mi13:06:072:38:507:348:06
8:06
+0:28
35K
21.75 mi13:11:392:44:227:335:32
7:24
-0:42
23M
23.00 mi13:29:193:02:027:5517:40
14:07
+6:43
24M
24.00 mi13:37:023:09:457:547:43
7:43
-6:24
40K
24.85 mi13:43:543:16:377:556:52
8:02
+0:19
25.2M
25.20 mi13:46:593:19:427:553:05
8:56
+0:54
Finish
26.22 mi13:54:573:27:407:567:58
7:49
-1:07

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

7:18 /mi

Average Pace

7:56 /mi

Slowest Pace

14:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:06:55

90% of race

Time at Slower Pace

20:45

10% of race

Average Pace: 7:55 /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 mi10:51:0423:477:3923:47
7:39
#11077
10K
6.21 mi11:14:2047:037:3423:16
7:29
#10667
15K
9.32 mi11:37:411:10:247:3323:21
7:31
#10533
20K
12.43 mi12:00:551:33:387:3223:14
7:29
#10142
Half
13.11 mi12:05:541:38:377:314:59
7:18
#10037
25K
15.53 mi12:23:571:56:407:3118:03
7:27
#9741
30K
18.64 mi12:47:392:20:227:3223:42
7:38
#9400
20M
20.00 mi12:58:012:30:447:3210:22
7:38
#9255
21M
21.00 mi13:06:072:38:507:348:06
8:06
#9132
35K
21.75 mi13:11:392:44:227:335:32
7:24
#9073
23M
23.00 mi13:29:193:02:027:5517:40
14:07
#11775
24M
24.00 mi13:37:023:09:457:547:43
7:43
#11634
40K
24.85 mi13:43:543:16:377:556:52
8:02
#11580
25.2M
25.20 mi13:46:593:19:427:553:05
8:56
#11570
Finish
26.22 mi13:54:573:27:407:567:58
7:49
#11506
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi110772373237310323(Top 39%)1995(Top 17%)1995(Top 41%)
10K6.21 mi3.10 mi10667+4102156+2172156+21710378(Top 39%)1994(Top 17%)1994(Top 41%)
15K9.32 mi3.11 mi10533+1342082+742082+7410323(Top 39%)1995(Top 17%)1995(Top 41%)
20K12.43 mi3.11 mi10142+3911896+1861896+1869164(Top 34%)1556(Top 14%)1556(Top 32%)
Half13.11 mi0.68 mi10037+1051851+451851+458735(Top 33%)1395(Top 12%)1395(Top 29%)
25K15.53 mi2.42 mi9741+2961736+1151736+1158388(Top 32%)1329(Top 12%)1329(Top 27%)
30K18.64 mi3.11 mi9400+3411654+821654+828165(Top 31%)1376(Top 12%)1376(Top 28%)
20M20.00 mi1.36 mi9255+1451617+371617+377719(Top 29%)1307(Top 11%)1307(Top 27%)
21M21.00 mi1.00 mi9132+1231591+261591+268055(Top 30%)1553(Top 14%)1553(Top 32%)
35K21.75 mi0.75 mi9073+591574+171574+177844(Top 29%)1452(Top 13%)1452(Top 30%)
23M23.00 mi1.25 mi11775-27022921-13472921-134725898(Top 97%)11095(Top 97%)11095(Top 227%)
24M24.00 mi1.00 mi11634+1412861+602861+609233(Top 35%)2221(Top 19%)2221(Top 45%)
40K24.85 mi0.85 mi11580+542855+62855+610291(Top 39%)2802(Top 25%)2802(Top 57%)
25.2M25.20 mi0.35 mi11570+102857-22857-212203(Top 46%)3816(Top 33%)3816(Top 78%)
Finish26.22 mi1.02 mi11506+642856+12856+110827(Top 41%)3101(Top 27%)3101(Top 63%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21stories
+97ft-345ft

Overall

10323

Females

1995

F18-39

1995

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10378

Females

1994

F18-39

1994

10K→15K

6.2 - 9.3 mi

Top 39%
×3stories
+67ft-78ft

Overall

10323

Females

1995

F18-39

1995

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9164

Females

1556

F18-39

1556

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

8735

Females

1395

F18-39

1395

Half→25K

13.1 - 15.5 mi

Top 32%
×4stories
+66ft-88ft

Overall

8388

Females

1329

F18-39

1329

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8165

Females

1376

F18-39

1376

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

7719

Females

1307

F18-39

1307

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

8055

Females

1553

F18-39

1553

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

7844

Females

1452

F18-39

1452

35K→23M

21.8 - 23.0 mi

Top 97%
×5stories
+23ft-63ft

Overall

25898

Females

11095

F18-39

11095

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

9233

Females

2221

F18-39

2221

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10291

Females

2802

F18-39

2802

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12203

Females

3816

F18-39

3816

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

10827

Females

3101

F18-39

3101

Passing Analysis

Category:
Athletes Passed
2749*
Passed By
3176
Net Change
-429
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11077
5K → 10K531121+410#11077#10667
10K → 15K268134+134#10667#10533
15K → 20K404*13+391#10533#10142
20K → Half108*3+105#10142#10037
Half → 25K304*8+296#10037#9741
25K → 30K372*31+341#9741#9400
30K → 20M15813+145#9400#9255
20M → 21M14724+123#9255#9132
21M → 35K7415+59#9132#9073
35K → 23M12701-2702#9073#11775
23M → 24M15211+141#11775#11634
24M → 40K8632+54#11634#11580
40K → 25.2M4131+10#11580#11570
25.2M → Finish10339+64#11570#11506
TOTALS2749*3176-429

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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