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BOSTON MARATHON 2023

Sarah Lancour

Bib: 14895•F

WI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 15%
Division (F18-39)
#0 / 4884
Top 27%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:03
Rank: #11842
Start → 5K
24:03 | 7:44/mi
10K· 6.21 mi
47:52
Rank: #11844 (-2)
5K → 10K
23:49 | 7:40/mi
15K· 9.32 mi
1:11:27
Rank: #11498 (+346)
10K → 15K
23:35 | 7:35/mi
20K· 12.43 mi
1:34:46
Rank: #10927 (+571)
15K → 20K
23:19 | 7:30/mi
Half· 13.11 mi
1:39:42
Rank: #10761 (+166)
20K → Half
4:56 | 7:14/mi
25K· 15.53 mi
1:57:43
Rank: #10295 (+466)
Half → 25K
18:01 | 7:26/mi
30K· 18.64 mi
2:21:16
Rank: #9810 (+485)
25K → 30K
23:33 | 7:35/mi
20M
2:31:32
Rank: #9580 (+230)
30K → 20M
10:16 | 7:33/mi
21M
2:39:36
Rank: #9433 (+147)
20M → 21M
8:04 | 8:04/mi
35K· 21.75 mi
2:45:26
Rank: #9466 (-33)
21M → 35K
5:50 | 7:48/mi
23M
2:55:26
Rank: #9434 (+32)
35K → 23M
10:00 | 7:59/mi
24M
3:02:57
Rank: #9322 (+112)
23M → 24M
7:31 | 7:31/mi
40K· 24.85 mi
3:09:34
Rank: #9265 (+57)
24M → 40K
6:37 | 7:44/mi
25.2M
3:12:23
Rank: #9226 (+39)
40K → 25.2M
2:49 | 8:10/mi
Finish· 26.22 mi
3:19:58
Rank: #9182 (+44)
25.2M → Finish
7:35 | 7:26/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:39:42
Pace7:36 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:40:16
Pace7:39 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:3424:037:4424:03
7:44
-
10K
6.21 mi11:22:2347:527:4223:49
7:40
-0:04
15K
9.32 mi11:45:581:11:277:4023:35
7:35
-0:05
20K
12.43 mi12:09:171:34:467:3823:19
7:30
-0:05
Half
13.11 mi12:14:131:39:427:364:56
7:14
-0:16
25K
15.53 mi12:32:141:57:437:3518:01
7:26
+0:12
30K
18.64 mi12:55:472:21:167:3523:33
7:35
+0:09
20M
20.00 mi13:06:032:31:327:3510:16
7:33
-0:02
21M
21.00 mi13:14:072:39:367:368:04
8:04
+0:31
35K
21.75 mi13:19:572:45:267:365:50
7:48
-0:16
23M
23.00 mi13:29:572:55:267:3810:00
7:59
+0:11
24M
24.00 mi13:37:283:02:577:377:31
7:31
-0:28
40K
24.85 mi13:44:053:09:347:386:37
7:44
+0:13
25.2M
25.20 mi13:46:543:12:237:382:49
8:10
+0:26
Finish
26.22 mi13:54:293:19:587:387:35
7:26
-0:44

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

7:14 /mi

Average Pace

7:38 /mi

Slowest Pace

8:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:59:05

90% of race

Time at Steady Pace

20:53

10% 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 mi10:58:3424:037:4424:03
7:44
#11842
10K
6.21 mi11:22:2347:527:4223:49
7:40
#11844
15K
9.32 mi11:45:581:11:277:4023:35
7:35
#11498
20K
12.43 mi12:09:171:34:467:3823:19
7:30
#10927
Half
13.11 mi12:14:131:39:427:364:56
7:14
#10761
25K
15.53 mi12:32:141:57:437:3518:01
7:26
#10295
30K
18.64 mi12:55:472:21:167:3523:33
7:35
#9810
20M
20.00 mi13:06:032:31:327:3510:16
7:33
#9580
21M
21.00 mi13:14:072:39:367:368:04
8:04
#9433
35K
21.75 mi13:19:572:45:267:365:50
7:48
#9466
23M
23.00 mi13:29:572:55:267:3810:00
7:59
#9434
24M
24.00 mi13:37:283:02:577:377:31
7:31
#9322
40K
24.85 mi13:44:053:09:347:386:37
7:44
#9265
25.2M
25.20 mi13:46:543:12:237:382:49
8:10
#9226
Finish
26.22 mi13:54:293:19:587:387:35
7:26
#9182
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi118422766276610936(Top 41%)2301(Top 20%)2301(Top 47%)
10K6.21 mi3.10 mi11844-22784-182784-1811943(Top 45%)2830(Top 25%)2830(Top 58%)
15K9.32 mi3.11 mi11498+3462601+1832601+18310936(Top 41%)2301(Top 20%)2301(Top 47%)
20K12.43 mi3.11 mi10927+5712299+3022299+3029362(Top 35%)1629(Top 14%)1629(Top 33%)
Half13.11 mi0.68 mi10761+1662222+772222+778163(Top 31%)1169(Top 10%)1169(Top 24%)
25K15.53 mi2.42 mi10295+4661993+2291993+2298277(Top 31%)1287(Top 11%)1287(Top 26%)
30K18.64 mi3.11 mi9810+4851806+1871806+1877819(Top 29%)1234(Top 11%)1234(Top 25%)
20M20.00 mi1.36 mi9580+2301741+651741+657229(Top 27%)1121(Top 10%)1121(Top 23%)
21M21.00 mi1.00 mi9433+1471707+341707+347825(Top 29%)1440(Top 13%)1440(Top 29%)
35K21.75 mi0.75 mi9466-331736-291736-2910646(Top 40%)2680(Top 23%)2680(Top 55%)
23M23.00 mi1.25 mi9434+321740-41740-49661(Top 36%)2325(Top 20%)2325(Top 48%)
24M24.00 mi1.00 mi9322+1121720+201720+207846(Top 29%)1621(Top 14%)1621(Top 33%)
40K24.85 mi0.85 mi9265+571729-91729-98272(Top 31%)1854(Top 16%)1854(Top 38%)
25.2M25.20 mi0.35 mi9226+391724+51724+57567(Top 28%)1637(Top 14%)1637(Top 34%)
Finish26.22 mi1.02 mi9182+441730-61730-68118(Top 30%)1882(Top 16%)1882(Top 39%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

10936

Females

2301

F18-39

2301

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

11943

Females

2830

F18-39

2830

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

10936

Females

2301

F18-39

2301

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9362

Females

1629

F18-39

1629

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8163

Females

1169

F18-39

1169

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8277

Females

1287

F18-39

1287

25K→30K

15.5 - 18.6 mi

Top 29%
×9stories
+181ft-148ft

Overall

7819

Females

1234

F18-39

1234

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7229

Females

1121

F18-39

1121

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

7825

Females

1440

F18-39

1440

21M→35K

21.0 - 21.8 mi

Top 40%
×7stories
+17ft-86ft

Overall

10646

Females

2680

F18-39

2680

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

9661

Females

2325

F18-39

2325

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7846

Females

1621

F18-39

1621

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8272

Females

1854

F18-39

1854

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7567

Females

1637

F18-39

1637

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2stories
+22ft-21ft

Overall

8118

Females

1882

F18-39

1882

Passing Analysis

Category:
Athletes Passed
3302*
Passed By
642
Net Change
+2660
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11842
5K → 10K300302-2#11842#11844
10K → 15K40155+346#11844#11498
15K → 20K5809+571#11498#10927
20K → Half1682+166#10927#10761
Half → 25K4682+466#10761#10295
25K → 30K493*8+485#10295#9810
30K → 20M2344+230#9810#9580
20M → 21M16518+147#9580#9433
21M → 35K4275-33#9433#9466
35K → 23M9664+32#9466#9434
23M → 24M12917+112#9434#9322
24M → 40K9639+57#9322#9265
40K → 25.2M5112+39#9265#9226
25.2M → Finish7935+44#9226#9182
TOTALS3302*642+2660

* 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