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BOSTON MARATHON 2023

Lindy Heffernan

Bib: 9919•F

VA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 35%
Gender (Female)
#0 / 11423
Top 15%
Division (F18-39)
#0 / 4884
Top 28%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:04
Rank: #11883
Start → 5K
24:04 | 7:45/mi
10K· 6.21 mi
47:05
Rank: #10710 (+1173)
5K → 10K
23:01 | 7:25/mi
15K· 9.32 mi
1:10:03
Rank: #10202 (+508)
10K → 15K
22:58 | 7:24/mi
20K· 12.43 mi
1:32:55
Rank: #9625 (+577)
15K → 20K
22:52 | 7:22/mi
Half· 13.11 mi
1:37:52
Rank: #9557 (+68)
20K → Half
4:57 | 7:15/mi
25K· 15.53 mi
1:55:55
Rank: #9328 (+229)
Half → 25K
18:03 | 7:27/mi
30K· 18.64 mi
2:19:39
Rank: #9094 (+234)
25K → 30K
23:44 | 7:38/mi
20M
2:30:17
Rank: #9056 (+38)
30K → 20M
10:38 | 7:49/mi
21M
2:38:30
Rank: #9013 (+43)
20M → 21M
8:13 | 8:13/mi
35K· 21.75 mi
2:44:08
Rank: #8995 (+18)
21M → 35K
5:38 | 7:32/mi
23M
2:54:18
Rank: #9066 (-71)
35K → 23M
10:10 | 8:07/mi
24M
3:02:17
Rank: #9136 (-70)
23M → 24M
7:59 | 7:59/mi
40K· 24.85 mi
3:09:17
Rank: #9175 (-39)
24M → 40K
7:00 | 8:11/mi
25.2M
3:12:13
Rank: #9177 (-2)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:20:17
Rank: #9276 (-99)
25.2M → Finish
8:04 | 7:55/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:52
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:42:25
Pace7:49 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:3924:047:4524:04
7:45
-
10K
6.21 mi11:12:4047:057:3523:01
7:25
-0:20
15K
9.32 mi11:35:381:10:037:3122:58
7:24
-0:01
20K
12.43 mi11:58:301:32:557:2922:52
7:22
-0:02
Half
13.11 mi12:03:271:37:527:284:57
7:15
-0:07
25K
15.53 mi12:21:301:55:557:2818:03
7:27
+0:12
30K
18.64 mi12:45:142:19:397:2923:44
7:38
+0:11
20M
20.00 mi12:55:522:30:177:3110:38
7:49
+0:11
21M
21.00 mi13:04:052:38:307:338:13
8:13
+0:24
35K
21.75 mi13:09:432:44:087:335:38
7:32
-0:41
23M
23.00 mi13:19:532:54:187:3510:10
8:07
+0:35
24M
24.00 mi13:27:523:02:177:367:59
7:59
-0:08
40K
24.85 mi13:34:523:09:177:377:00
8:11
+0:12
25.2M
25.20 mi13:37:483:12:137:382:56
8:30
+0:19
Finish
26.22 mi13:45:523:20:177:398:04
7:55
-0:35

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

7:15 /mi

Average Pace

7:39 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:59

82% of race

Time at Steady Pace

36:18

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:38 /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 mi10:49:3924:047:4524:04
7:45
#11883
10K
6.21 mi11:12:4047:057:3523:01
7:25
#10710
15K
9.32 mi11:35:381:10:037:3122:58
7:24
#10202
20K
12.43 mi11:58:301:32:557:2922:52
7:22
#9625
Half
13.11 mi12:03:271:37:527:284:57
7:15
#9557
25K
15.53 mi12:21:301:55:557:2818:03
7:27
#9328
30K
18.64 mi12:45:142:19:397:2923:44
7:38
#9094
20M
20.00 mi12:55:522:30:177:3110:38
7:49
#9056
21M
21.00 mi13:04:052:38:307:338:13
8:13
#9013
35K
21.75 mi13:09:432:44:087:335:38
7:32
#8995
23M
23.00 mi13:19:532:54:187:3510:10
8:07
#9066
24M
24.00 mi13:27:523:02:177:367:59
7:59
#9136
40K
24.85 mi13:34:523:09:177:377:00
8:11
#9175
25.2M
25.20 mi13:37:483:12:137:382:56
8:30
#9177
Finish
26.22 mi13:45:523:20:177:398:04
7:55
#9276
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi11883279727979282(Top 35%)1546(Top 14%)1546(Top 32%)
10K6.21 mi3.10 mi10710+11732180+6172180+6179713(Top 36%)1698(Top 15%)1698(Top 35%)
15K9.32 mi3.11 mi10202+5081910+2701910+2709282(Top 35%)1546(Top 14%)1546(Top 32%)
20K12.43 mi3.11 mi9625+5771674+2361674+2368240(Top 31%)1197(Top 10%)1197(Top 25%)
Half13.11 mi0.68 mi9557+681651+231651+238333(Top 31%)1238(Top 11%)1238(Top 25%)
25K15.53 mi2.42 mi9328+2291576+751576+758384(Top 31%)1325(Top 12%)1325(Top 27%)
30K18.64 mi3.11 mi9094+2341520+561520+568241(Top 31%)1404(Top 12%)1404(Top 29%)
20M20.00 mi1.36 mi9056+381530-101530-109082(Top 34%)1822(Top 16%)1822(Top 37%)
21M21.00 mi1.00 mi9013+431537-71537-78722(Top 33%)1807(Top 16%)1807(Top 37%)
35K21.75 mi0.75 mi8995+181540-31540-38777(Top 33%)1810(Top 16%)1810(Top 37%)
23M23.00 mi1.25 mi9066-711596-561596-5610614(Top 40%)2817(Top 25%)2817(Top 58%)
24M24.00 mi1.00 mi9136-701651-551651-5511124(Top 42%)3148(Top 28%)3148(Top 64%)
40K24.85 mi0.85 mi9175-391693-421693-4211275(Top 42%)3284(Top 29%)3284(Top 67%)
25.2M25.20 mi0.35 mi9177-21703-101703-109608(Top 36%)2491(Top 22%)2491(Top 51%)
Finish26.22 mi1.02 mi9276-991765-621765-6211515(Top 43%)3445(Top 30%)3445(Top 71%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9282

Females

1546

F18-39

1546

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

9713

Females

1698

F18-39

1698

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9282

Females

1546

F18-39

1546

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8240

Females

1197

F18-39

1197

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8333

Females

1238

F18-39

1238

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8384

Females

1325

F18-39

1325

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8241

Females

1404

F18-39

1404

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

9082

Females

1822

F18-39

1822

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

8722

Females

1807

F18-39

1807

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

8777

Females

1810

F18-39

1810

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

10614

Females

2817

F18-39

2817

23M→24M

23.0 - 24.0 mi

Top 42%
×6stories
+12ft-82ft

Overall

11124

Females

3148

F18-39

3148

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11275

Females

3284

F18-39

3284

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9608

Females

2491

F18-39

2491

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

11515

Females

3445

F18-39

3445

Passing Analysis

Category:
Athletes Passed
3386*
Passed By
779
Net Change
+2607
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11883
5K → 10K120734+1173#11883#10710
10K → 15K54234+508#10710#10202
15K → 20K583*6+577#10202#9625
20K → Half724+68#9625#9557
Half → 25K24819+229#9557#9328
25K → 30K287*53+234#9328#9094
30K → 20M10668+38#9094#9056
20M → 21M9754+43#9056#9013
21M → 35K4830+18#9013#8995
35K → 23M56127-71#8995#9066
23M → 24M40110-70#9066#9136
24M → 40K5089-39#9136#9175
40K → 25.2M2325-2#9175#9177
25.2M → Finish27126-99#9177#9276
TOTALS3386*779+2607

* 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