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BOSTON MARATHON 2026

Kathryn Slomski

Bib: 15522•F

MA

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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Top 45%
Age Group (F18-39)
#0 / 5716
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
25:53
3.11 mi
Rank: #19072
Start → 5K
25:53 | 8:20/mi
10K
51:52
6.21 mi
Rank: #19308 (-236)
5K → 10K
25:59 | 8:22/mi
15K
1:16:24
9.32 mi
Rank: #18357 (+951)
10K → 15K
24:32 | 7:54/mi
20K
1:40:13
12.43 mi
Rank: #17287 (+1070)
15K → 20K
23:49 | 7:40/mi
HALF
1:45:15
13.11 mi
Rank: #17029 (+258)
20K → HALF
5:02 | 7:24/mi
25K
2:03:51
15.53 mi
Rank: #16369 (+660)
HALF → 25K
18:36 | 7:41/mi
30K
2:29:16
18.64 mi
Rank: #16051 (+318)
25K → 30K
25:25 | 8:11/mi
20M
2:40:41
20.00 mi
Rank: #16020 (+31)
30K → 20M
11:25 | 8:25/mi
21M
2:49:14
21.00 mi
Rank: #15822 (+198)
20M → 21M
8:33 | 8:33/mi
35K
2:55:25
21.75 mi
Rank: #15817 (+5)
21M → 35K
6:11 | 8:16/mi
23M
3:06:08
23.00 mi
Rank: #15809 (+8)
35K → 23M
10:43 | 8:34/mi
24M
3:14:57
24.00 mi
Rank: #15949 (-140)
23M → 24M
8:49 | 8:49/mi
40K
3:22:45
24.85 mi
Rank: #16052 (-103)
24M → 40K
7:48 | 9:08/mi
25.2M
3:26:08
25.20 mi
Rank: #16098 (-46)
40K → 25.2M
3:23 | 9:49/mi
FINISH
3:35:10
26.22 mi
Rank: #16280 (-182)
25.2M → FINISH
9:02 | 8:52/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:45:15
Pace8:02 /mi
2nd Half
Distance13.11 mi
Time1:49:55
Pace8:24 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:3125:538:2025:53
8:20
-
10K
6.21 mi11:23:3051:528:2125:59
8:22
+0:02
15K
9.32 mi11:48:021:16:248:1224:32
7:54
-0:28
20K
12.43 mi12:11:511:40:138:0423:49
7:40
-0:14
HALF
13.11 mi12:16:531:45:158:025:02
7:24
-0:16
25K
15.53 mi12:35:292:03:517:5918:36
7:41
+0:17
30K
18.64 mi13:00:542:29:168:0125:25
8:11
+0:30
20M
20.00 mi13:12:192:40:418:0311:25
8:25
+0:14
21M
21.00 mi13:20:522:49:148:048:33
8:33
+0:08
35K
21.75 mi13:27:032:55:258:046:11
8:16
-0:17
23M
23.00 mi13:37:463:06:088:0610:43
8:34
+0:18
24M
24.00 mi13:46:353:14:578:088:49
8:49
+0:15
40K
24.85 mi13:54:233:22:458:107:48
9:08
+0:19
25.2M
25.20 mi13:57:463:26:088:113:23
9:49
+0:41
FINISH
26.22 mi14:06:483:35:108:139:02
8:52
-0:57

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

7:24 /mi

Average Pace

8:13 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:11:59

33% of race

Time at Steady Pace

1:54:09

53% of race

Time at Slower Pace

29:02

13% of race

Average Pace: 8:12 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:57:3125:538:2025:53
8:20
#19072
10K
6.21 mi11:23:3051:528:2125:59
8:22
#19308
15K
9.32 mi11:48:021:16:248:1224:32
7:54
#18357
20K
12.43 mi12:11:511:40:138:0423:49
7:40
#17287
HALF
13.11 mi12:16:531:45:158:025:02
7:24
#17029
25K
15.53 mi12:35:292:03:517:5918:36
7:41
#16369
30K
18.64 mi13:00:542:29:168:0125:25
8:11
#16051
20M
20.00 mi13:12:192:40:418:0311:25
8:25
#16020
21M
21.00 mi13:20:522:49:148:048:33
8:33
#15822
35K
21.75 mi13:27:032:55:258:046:11
8:16
#15817
23M
23.00 mi13:37:463:06:088:0610:43
8:34
#15809
24M
24.00 mi13:46:353:14:578:088:49
8:49
#15949
40K
24.85 mi13:54:233:22:458:107:48
9:08
#16052
25.2M
25.20 mi13:57:463:26:088:113:23
9:49
#16098
FINISH
26.22 mi14:06:483:35:108:139:02
8:52
#16280
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi190727126712616173(Top 56%)5433(Top 43%)5433(Top 95%)
10K6.21 mi3.10 mi19308-2367239-1137239-11319569(Top 67%)7350(Top 58%)7350(Top 129%)
15K9.32 mi3.11 mi18357+9516686+5536686+55316173(Top 56%)5433(Top 43%)5433(Top 95%)
20K12.43 mi3.11 mi17287+10706097+5896097+58913448(Top 46%)3918(Top 31%)3918(Top 69%)
HALF13.11 mi0.68 mi17029+2585952+1455952+14512084(Top 42%)3098(Top 25%)3098(Top 54%)
25K15.53 mi2.42 mi16369+6605579+3735579+37312826(Top 44%)3637(Top 29%)3637(Top 64%)
30K18.64 mi3.11 mi16051+3185436+1435436+14314819(Top 51%)4870(Top 39%)4870(Top 85%)
20M20.00 mi1.36 mi16020+315432+45432+415628(Top 54%)5438(Top 43%)5438(Top 95%)
21M21.00 mi1.00 mi15822+1985336+965336+9613506(Top 47%)4334(Top 34%)4334(Top 76%)
35K21.75 mi0.75 mi15817+55347-115347-1116242(Top 56%)5888(Top 47%)5888(Top 103%)
23M23.00 mi1.25 mi15809+85369-225369-2216106(Top 55%)5906(Top 47%)5906(Top 103%)
24M24.00 mi1.00 mi15949-1405473-1045473-10418619(Top 64%)7299(Top 58%)7299(Top 128%)
40K24.85 mi0.85 mi16052-1035547-745547-7418962(Top 65%)7546(Top 60%)7546(Top 132%)
25.2M25.20 mi0.35 mi16098-465582-355582-3518687(Top 64%)7375(Top 59%)7375(Top 129%)
FINISH26.22 mi1.02 mi16280-1825701-1195701-11919925(Top 69%)8037(Top 64%)8037(Top 141%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21
+97ft-345ft

Overall

16173

Females

5433

F18-39

5433

5K→10K

3.1 - 6.2 mi

Top 67%
×5
+79ft-138ft

Overall

19569

Females

7350

F18-39

7350

10K→15K

6.2 - 9.3 mi

Top 56%
×3
+67ft-78ft

Overall

16173

Females

5433

F18-39

5433

15K→20K

9.3 - 12.4 mi

Top 46%
×5
+106ft-86ft

Overall

13448

Females

3918

F18-39

3918

20K→HALF

12.4 - 13.1 mi

Top 42%
×2
+19ft-37ft

Overall

12084

Females

3098

F18-39

3098

HALF→25K

13.1 - 15.5 mi

Top 44%
×4
+66ft-88ft

Overall

12826

Females

3637

F18-39

3637

25K→30K

15.5 - 18.6 mi

Top 51%
×9
+181ft-148ft

Overall

14819

Females

4870

F18-39

4870

30K→20M

18.6 - 20.0 mi

Top 54%
×5
+64ft-50ft

Overall

15628

Females

5438

F18-39

5438

20M→21M

20.0 - 21.0 mi

Top 47%
×8
+106ft-24ft

Overall

13506

Females

4334

F18-39

4334

21M→35K

21.0 - 21.8 mi

Top 56%
×7
+17ft-86ft

Overall

16242

Females

5888

F18-39

5888

35K→23M

21.8 - 23.0 mi

Top 55%
×5
+23ft-63ft

Overall

16106

Females

5906

F18-39

5906

23M→24M

23.0 - 24.0 mi

Top 64%
×6
+12ft-82ft

Overall

18619

Females

7299

F18-39

7299

24M→40K

24.0 - 24.9 mi

Top 65%
×1
+6ft-20ft

Overall

18962

Females

7546

F18-39

7546

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1
+13ft-16ft

Overall

18687

Females

7375

F18-39

7375

25.2M→FINISH

25.2 - 26.2 mi

Top 69%
×2
+22ft-21ft

Overall

19925

Females

8037

F18-39

8037

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
4067*
Passed By
1078
Net Change
+2792
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19072
5K → 10K160200-236#19072#19308
10K → 15K961*10+951#19308#18357
15K → 20K1070*0+1070#18357#17287
20K → HALF258*0+258#17287#17029
HALF → 25K664*4+660#17029#16369
25K → 30K362*44+318#16369#16051
30K → 20M10372+31#16051#16020
20M → 21M217*19+198#16020#15822
21M → 35K6560+5#15822#15817
35K → 23M10193+8#15817#15809
23M → 24M30170-140#15809#15949
24M → 40K35138-103#15949#16052
40K → 25.2M2268-46#16052#16098
25.2M → FINISH19200-182#16098#16280
TOTALS4067*1078+2792

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

📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing