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BOSTON MARATHON 2023

Kasia Ludwig-Siri

Bib: 19240•F

NC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 45%
Gender (Female)
#0 / 11423
Top 28%
Division (F18-39)
#0 / 4884
Top 46%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:31
Rank: #13171
Start → 5K
24:31 | 7:53/mi
10K· 6.21 mi
48:02
Rank: #12103 (+1068)
5K → 10K
23:31 | 7:34/mi
15K· 9.32 mi
1:11:45
Rank: #11768 (+335)
10K → 15K
23:43 | 7:38/mi
20K· 12.43 mi
1:35:56
Rank: #11690 (+78)
15K → 20K
24:11 | 7:47/mi
Half· 13.11 mi
1:41:12
Rank: #11714 (-24)
20K → Half
5:16 | 7:43/mi
25K· 15.53 mi
2:00:43
Rank: #11924 (-210)
Half → 25K
19:31 | 8:03/mi
30K· 18.64 mi
2:26:27
Rank: #12093 (-169)
25K → 30K
25:44 | 8:17/mi
20M
2:37:35
Rank: #12042 (+51)
30K → 20M
11:08 | 8:12/mi
21M
2:46:28
Rank: #12080 (-38)
20M → 21M
8:53 | 8:53/mi
35K· 21.75 mi
2:52:32
Rank: #12104 (-24)
21M → 35K
6:04 | 8:07/mi
23M
3:02:56
Rank: #12076 (+28)
35K → 23M
10:24 | 8:18/mi
24M
3:11:01
Rank: #12067 (+9)
23M → 24M
8:05 | 8:05/mi
40K· 24.85 mi
3:18:10
Rank: #12076 (-9)
24M → 40K
7:09 | 8:22/mi
25.2M
3:21:16
Rank: #12076
40K → 25.2M
3:06 | 8:59/mi
Finish· 26.22 mi
3:29:33
Rank: #12112 (-36)
25.2M → Finish
8:17 | 8:08/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:12
Pace7:43 /mi
2nd Half
Distance13.11 mi
Time1:48:21
Pace8:16 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2924:317:5324:31
7:53
-
10K
6.21 mi11:40:0048:027:4423:31
7:34
-0:19
15K
9.32 mi12:03:431:11:457:4223:43
7:38
+0:04
20K
12.43 mi12:27:541:35:567:4324:11
7:47
+0:09
Half
13.11 mi12:33:101:41:127:435:16
7:43
-0:04
25K
15.53 mi12:52:412:00:437:4619:31
8:03
+0:20
30K
18.64 mi13:18:252:26:277:5125:44
8:17
+0:14
20M
20.00 mi13:29:332:37:357:5311:08
8:12
-0:05
21M
21.00 mi13:38:262:46:287:568:53
8:53
+0:41
35K
21.75 mi13:44:302:52:327:566:04
8:07
-0:46
23M
23.00 mi13:54:543:02:567:5710:24
8:18
+0:11
24M
24.00 mi14:02:593:11:017:588:05
8:05
-0:13
40K
24.85 mi14:10:083:18:107:587:09
8:22
+0:17
25.2M
25.20 mi14:13:143:21:167:593:06
8:59
+0:37
Finish
26.22 mi14:21:313:29:338:008:17
8:08
-0:51

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

7:34 /mi

Average Pace

8:00 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:10:25

91% of race

Time at Steady Pace

16:02

8% of race

Time at Slower Pace

3:06

1% of race

Average Pace: 8:00 /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 mi11:16:2924:317:5324:31
7:53
#13171
10K
6.21 mi11:40:0048:027:4423:31
7:34
#12103
15K
9.32 mi12:03:431:11:457:4223:43
7:38
#11768
20K
12.43 mi12:27:541:35:567:4324:11
7:47
#11690
Half
13.11 mi12:33:101:41:127:435:16
7:43
#11714
25K
15.53 mi12:52:412:00:437:4619:31
8:03
#11924
30K
18.64 mi13:18:252:26:277:5125:44
8:17
#12093
20M
20.00 mi13:29:332:37:357:5311:08
8:12
#12042
21M
21.00 mi13:38:262:46:287:568:53
8:53
#12080
35K
21.75 mi13:44:302:52:327:566:04
8:07
#12104
23M
23.00 mi13:54:543:02:567:5710:24
8:18
#12076
24M
24.00 mi14:02:593:11:017:588:05
8:05
#12067
40K
24.85 mi14:10:083:18:107:587:09
8:22
#12076
25.2M
25.20 mi14:13:143:21:167:593:06
8:59
#12076
Finish
26.22 mi14:21:313:29:338:008:17
8:08
#12112
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi131713535353511317(Top 43%)2527(Top 22%)2527(Top 52%)
10K6.21 mi3.10 mi12103+10682918+6172918+61711064(Top 42%)2351(Top 21%)2351(Top 48%)
15K9.32 mi3.11 mi11768+3352768+1502768+15011317(Top 43%)2527(Top 22%)2527(Top 52%)
20K12.43 mi3.11 mi11690+782738+302738+3011622(Top 44%)2752(Top 24%)2752(Top 56%)
Half13.11 mi0.68 mi11714-242747-92747-912109(Top 45%)2987(Top 26%)2987(Top 61%)
25K15.53 mi2.42 mi11924-2102895-1482895-14813144(Top 49%)3705(Top 32%)3705(Top 76%)
30K18.64 mi3.11 mi12093-1693027-1323027-13212921(Top 49%)3705(Top 32%)3705(Top 76%)
20M20.00 mi1.36 mi12042+513030-33030-311672(Top 44%)3102(Top 27%)3102(Top 64%)
21M21.00 mi1.00 mi12080-383055-253055-2512768(Top 48%)3819(Top 33%)3819(Top 78%)
35K21.75 mi0.75 mi12104-243093-383093-3812861(Top 48%)3914(Top 34%)3914(Top 80%)
23M23.00 mi1.25 mi12076+283099-63099-611947(Top 45%)3485(Top 31%)3485(Top 71%)
24M24.00 mi1.00 mi12067+93119-203119-2011847(Top 45%)3509(Top 31%)3509(Top 72%)
40K24.85 mi0.85 mi12076-93144-253144-2512484(Top 47%)3925(Top 34%)3925(Top 80%)
25.2M25.20 mi0.35 mi120763153-93153-912507(Top 47%)3966(Top 35%)3966(Top 81%)
Finish26.22 mi1.02 mi12112-363186-333186-3312988(Top 49%)4204(Top 37%)4204(Top 86%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21stories
+97ft-345ft

Overall

11317

Females

2527

F18-39

2527

5K→10K

3.1 - 6.2 mi

Top 42%
×5stories
+79ft-138ft

Overall

11064

Females

2351

F18-39

2351

10K→15K

6.2 - 9.3 mi

Top 43%
×3stories
+67ft-78ft

Overall

11317

Females

2527

F18-39

2527

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11622

Females

2752

F18-39

2752

20K→Half

12.4 - 13.1 mi

Top 45%
×2stories
+19ft-37ft

Overall

12109

Females

2987

F18-39

2987

Half→25K

13.1 - 15.5 mi

Top 49%
×4stories
+66ft-88ft

Overall

13144

Females

3705

F18-39

3705

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

12921

Females

3705

F18-39

3705

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

11672

Females

3102

F18-39

3102

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12768

Females

3819

F18-39

3819

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

12861

Females

3914

F18-39

3914

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

11947

Females

3485

F18-39

3485

23M→24M

23.0 - 24.0 mi

Top 45%
×6stories
+12ft-82ft

Overall

11847

Females

3509

F18-39

3509

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12484

Females

3925

F18-39

3925

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12507

Females

3966

F18-39

3966

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2stories
+22ft-21ft

Overall

12988

Females

4204

F18-39

4204

Passing Analysis

Category:
Athletes Passed
2530
Passed By
1471
Net Change
+1059
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13171
5K → 10K112254+1068#13171#12103
10K → 15K40065+335#12103#11768
15K → 20K205127+78#11768#11690
20K → Half2145-24#11690#11714
Half → 25K81291-210#11714#11924
25K → 30K141310-169#11924#12093
30K → 20M12473+51#12093#12042
20M → 21M71109-38#12042#12080
21M → 35K4165-24#12080#12104
35K → 23M9769+28#12104#12076
23M → 24M7970+9#12076#12067
24M → 40K6271-9#12067#12076
40K → 25.2M27270#12076#12076
25.2M → Finish5995-36#12076#12112
TOTALS25301471+1059
📊

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