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BOSTON MARATHON 2023

Louise Chiasson

Bib: 14850•F

BC

0:00
0:00
/ mi
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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
23:37
Rank: #10573
Start → 5K
23:37 | 7:36/mi
10K· 6.21 mi
46:56
Rank: #10513 (+60)
5K → 10K
23:19 | 7:30/mi
15K· 9.32 mi
1:10:33
Rank: #10665 (-152)
10K → 15K
23:37 | 7:36/mi
20K· 12.43 mi
1:34:15
Rank: #10564 (+101)
15K → 20K
23:42 | 7:38/mi
Half· 13.11 mi
1:39:26
Rank: #10594 (-30)
20K → Half
5:11 | 7:36/mi
25K· 15.53 mi
1:58:16
Rank: #10601 (-7)
Half → 25K
18:50 | 7:46/mi
30K· 18.64 mi
2:23:27
Rank: #10735 (-134)
25K → 30K
25:11 | 8:06/mi
20M
2:34:46
Rank: #10830 (-95)
30K → 20M
11:19 | 8:20/mi
21M
2:43:32
Rank: #10905 (-75)
20M → 21M
8:46 | 8:46/mi
35K· 21.75 mi
2:49:38
Rank: #10972 (-67)
21M → 35K
6:06 | 8:09/mi
23M
3:00:09
Rank: #11061 (-89)
35K → 23M
10:31 | 8:24/mi
24M
3:08:39
Rank: #11252 (-191)
23M → 24M
8:30 | 8:30/mi
40K· 24.85 mi
3:15:58
Rank: #11347 (-95)
24M → 40K
7:19 | 8:33/mi
25.2M
3:19:03
Rank: #11350 (-3)
40K → 25.2M
3:05 | 8:56/mi
Finish· 26.22 mi
3:27:39
Rank: #11500 (-150)
25.2M → Finish
8:36 | 8:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:26
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:48:13
Pace8:15 /mi
📊Positive Split: 8.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2723:377:3623:37
7:36
-
10K
6.21 mi11:15:4646:567:3323:19
7:30
-0:06
15K
9.32 mi11:39:231:10:337:3423:37
7:36
+0:06
20K
12.43 mi12:03:051:34:157:3523:42
7:38
+0:02
Half
13.11 mi12:08:161:39:267:355:11
7:36
-0:02
25K
15.53 mi12:27:061:58:167:3718:50
7:46
+0:10
30K
18.64 mi12:52:172:23:277:4225:11
8:06
+0:20
20M
20.00 mi13:03:362:34:467:4411:19
8:20
+0:14
21M
21.00 mi13:12:222:43:327:478:46
8:46
+0:26
35K
21.75 mi13:18:282:49:387:486:06
8:09
-0:37
23M
23.00 mi13:28:593:00:097:5010:31
8:24
+0:15
24M
24.00 mi13:37:293:08:397:528:30
8:30
+0:06
40K
24.85 mi13:44:483:15:587:537:19
8:33
+0:03
25.2M
25.20 mi13:47:533:19:037:543:05
8:56
+0:23
Finish
26.22 mi13:56:293:27:397:568:36
8:26
-0:30

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

7:30 /mi

Average Pace

7:56 /mi

Slowest Pace

8:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:29:33

72% of race

Time at Steady Pace

55:01

26% of race

Time at Slower Pace

3:05

1% 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 mi10:52:2723:377:3623:37
7:36
#10573
10K
6.21 mi11:15:4646:567:3323:19
7:30
#10513
15K
9.32 mi11:39:231:10:337:3423:37
7:36
#10665
20K
12.43 mi12:03:051:34:157:3523:42
7:38
#10564
Half
13.11 mi12:08:161:39:267:355:11
7:36
#10594
25K
15.53 mi12:27:061:58:167:3718:50
7:46
#10601
30K
18.64 mi12:52:172:23:277:4225:11
8:06
#10735
20M
20.00 mi13:03:362:34:467:4411:19
8:20
#10830
21M
21.00 mi13:12:222:43:327:478:46
8:46
#10905
35K
21.75 mi13:18:282:49:387:486:06
8:09
#10972
23M
23.00 mi13:28:593:00:097:5010:31
8:24
#11061
24M
24.00 mi13:37:293:08:397:528:30
8:30
#11252
40K
24.85 mi13:44:483:15:587:537:19
8:33
#11347
25.2M
25.20 mi13:47:533:19:037:543:05
8:56
#11350
Finish
26.22 mi13:56:293:27:397:568:36
8:26
#11500
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi105732125212511051(Top 42%)2380(Top 21%)2380(Top 49%)
10K6.21 mi3.10 mi10513+602081+442081+4410504(Top 39%)2061(Top 18%)2061(Top 42%)
15K9.32 mi3.11 mi10665-1522150-692150-6911051(Top 42%)2380(Top 21%)2380(Top 49%)
20K12.43 mi3.11 mi10564+1012107+432107+4310320(Top 39%)2062(Top 18%)2062(Top 42%)
Half13.11 mi0.68 mi10594-302119-122119-1211077(Top 42%)2419(Top 21%)2419(Top 50%)
25K15.53 mi2.42 mi10601-72146-272146-2710869(Top 41%)2421(Top 21%)2421(Top 50%)
30K18.64 mi3.11 mi10735-1342270-1242270-12411692(Top 44%)3012(Top 26%)3012(Top 62%)
20M20.00 mi1.36 mi10830-952347-772347-7712538(Top 47%)3595(Top 31%)3595(Top 74%)
21M21.00 mi1.00 mi10905-752415-682415-6812075(Top 45%)3437(Top 30%)3437(Top 70%)
35K21.75 mi0.75 mi10972-672459-442459-4413154(Top 49%)4075(Top 36%)4075(Top 83%)
23M23.00 mi1.25 mi11061-892523-642523-6412582(Top 47%)3833(Top 34%)3833(Top 78%)
24M24.00 mi1.00 mi11252-1912654-1312654-13114476(Top 54%)4933(Top 43%)4933(Top 101%)
40K24.85 mi0.85 mi11347-952728-742728-7413701(Top 51%)4568(Top 40%)4568(Top 94%)
25.2M25.20 mi0.35 mi11350-32742-142742-1412201(Top 46%)3814(Top 33%)3814(Top 78%)
Finish26.22 mi1.02 mi11500-1502853-1112853-11115012(Top 56%)5247(Top 46%)5247(Top 107%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11051

Females

2380

F18-39

2380

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10504

Females

2061

F18-39

2061

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11051

Females

2380

F18-39

2380

15K→20K

9.3 - 12.4 mi

Top 39%
×5stories
+106ft-86ft

Overall

10320

Females

2062

F18-39

2062

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

11077

Females

2419

F18-39

2419

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

10869

Females

2421

F18-39

2421

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

11692

Females

3012

F18-39

3012

30K→20M

18.6 - 20.0 mi

Top 47%
×5stories
+64ft-50ft

Overall

12538

Females

3595

F18-39

3595

20M→21M

20.0 - 21.0 mi

Top 45%
×8stories
+106ft-24ft

Overall

12075

Females

3437

F18-39

3437

21M→35K

21.0 - 21.8 mi

Top 49%
×7stories
+17ft-86ft

Overall

13154

Females

4075

F18-39

4075

35K→23M

21.8 - 23.0 mi

Top 47%
×5stories
+23ft-63ft

Overall

12582

Females

3833

F18-39

3833

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

14476

Females

4933

F18-39

4933

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

13701

Females

4568

F18-39

4568

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12201

Females

3814

F18-39

3814

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

15012

Females

5247

F18-39

5247

Passing Analysis

Category:
Athletes Passed
1269*
Passed By
2196
Net Change
-927
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10573
5K → 10K313*253+60#10573#10513
10K → 15K133285-152#10513#10665
15K → 20K211110+101#10665#10564
20K → Half2353-30#10564#10594
Half → 25K126133-7#10594#10601
25K → 30K136270-134#10601#10735
30K → 20M55*150-95#10735#10830
20M → 21M50125-75#10830#10905
21M → 35K3097-67#10905#10972
35K → 23M67156-89#10972#11061
23M → 24M26217-191#11061#11252
24M → 40K36131-95#11252#11347
40K → 25.2M3134-3#11347#11350
25.2M → Finish32182-150#11350#11500
TOTALS1269*2196-927

* 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