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BOSTON MARATHON 2026

Layla Shaffer

Bib: 29333β€’F

NY

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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Top 42%
Age Group (F18-39)
#0 / 5716
Race Day Weather
51Β°/41Β°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
22:48
3.11 mi
Rank: #11393
Start β†’ 5K
22:48 | 7:21/mi
10K
45:42
6.21 mi
Rank: #11574 (-181)
5K β†’ 10K
22:54 | 7:23/mi
15K
1:08:54
9.32 mi
Rank: #11890 (-316)
10K β†’ 15K
23:12 | 7:29/mi
20K
1:32:31
12.43 mi
Rank: #12100 (-210)
15K β†’ 20K
23:37 | 7:37/mi
HALF
1:37:43
13.11 mi
Rank: #12215 (-115)
20K β†’ HALF
5:12 | 7:38/mi
25K
1:56:22
15.53 mi
Rank: #12319 (-104)
HALF β†’ 25K
18:39 | 7:42/mi
30K
2:21:19
18.64 mi
Rank: #12555 (-236)
25K β†’ 30K
24:57 | 8:02/mi
20M
2:32:40
20.00 mi
Rank: #12747 (-192)
30K β†’ 20M
11:21 | 8:22/mi
21M
2:41:50
21.00 mi
Rank: #13005 (-258)
20M β†’ 21M
9:10 | 9:10/mi
35K
2:47:56
21.75 mi
Rank: #13096 (-91)
21M β†’ 35K
6:06 | 8:10/mi
23M
2:59:04
23.00 mi
Rank: #13392 (-296)
35K β†’ 23M
11:08 | 8:54/mi
24M
3:08:01
24.00 mi
Rank: #13732 (-340)
23M β†’ 24M
8:57 | 8:57/mi
40K
3:17:43
24.85 mi
Rank: #14602 (-870)
24M β†’ 40K
9:42 | 11:21/mi
25.2M
3:21:10
25.20 mi
Rank: #14704 (-102)
40K β†’ 25.2M
3:27 | 10:01/mi
FINISH
3:32:04
26.22 mi
Rank: #15519 (-815)
25.2M β†’ FINISH
10:54 | 10:42/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:37:43
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:54:21
Pace8:44 /mi
πŸ“ŠPositive Split: 17.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:3722:487:2122:48
7:21
-
10K
6.21 mi12:10:3145:427:2222:54
7:23
+0:02
15K
9.32 mi12:33:431:08:547:2423:12
7:29
+0:06
20K
12.43 mi12:57:201:32:317:2723:37
7:37
+0:08
HALF
13.11 mi13:02:321:37:437:285:12
7:38
+0:01
25K
15.53 mi13:21:111:56:227:3018:39
7:42
+0:04
30K
18.64 mi13:46:082:21:197:3524:57
8:02
+0:20
20M
20.00 mi13:57:292:32:407:3911:21
8:22
+0:20
21M
21.00 mi14:06:392:41:507:439:10
9:10
+0:48
35K
21.75 mi14:12:452:47:567:446:06
8:10
-1:00
23M
23.00 mi14:23:532:59:047:4811:08
8:54
+0:44
24M
24.00 mi14:32:503:08:017:518:57
8:57
+0:03
40K
24.85 mi14:42:323:17:437:589:42
11:21
+2:24
25.2M
25.20 mi14:45:593:21:107:593:27
10:01
-1:20
FINISH
26.22 mi14:56:533:32:048:0610:54
10:42
+0:41

Checkpoint Splits Visualizations

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

πŸ“ˆPace 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

7:21 /mi

Average Pace

8:06 /mi

Slowest Pace

11:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

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

1:08:54

32% of race

Time at Steady Pace

1:29:52

42% of race

Time at Slower Pace

53:18

25% of race

Average Pace: 8:05 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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 mi11:47:3722:487:2122:48
7:21
#11393
10K
6.21 mi12:10:3145:427:2222:54
7:23
#11574
15K
9.32 mi12:33:431:08:547:2423:12
7:29
#11890
20K
12.43 mi12:57:201:32:317:2723:37
7:37
#12100
HALF
13.11 mi13:02:321:37:437:285:12
7:38
#12215
25K
15.53 mi13:21:111:56:227:3018:39
7:42
#12319
30K
18.64 mi13:46:082:21:197:3524:57
8:02
#12555
20M
20.00 mi13:57:292:32:407:3911:21
8:22
#12747
21M
21.00 mi14:06:392:41:507:439:10
9:10
#13005
35K
21.75 mi14:12:452:47:567:446:06
8:10
#13096
23M
23.00 mi14:23:532:59:047:4811:08
8:54
#13392
24M
24.00 mi14:32:503:08:017:518:57
8:57
#13732
40K
24.85 mi14:42:323:17:437:589:42
11:21
#14602
25.2M
25.20 mi14:45:593:21:107:593:27
10:01
#14704
FINISH
26.22 mi14:56:533:32:048:0610:54
10:42
#15519
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 mi113932582258212561(Top 43%)3328(Top 26%)3328(Top 58%)
10K6.21 mi3.10 mi11574-1812708-1262708-12611825(Top 41%)2876(Top 23%)2876(Top 50%)
15K9.32 mi3.11 mi11890-3162906-1982906-19812561(Top 43%)3328(Top 26%)3328(Top 58%)
20K12.43 mi3.11 mi12100-2103042-1363042-13612877(Top 44%)3605(Top 29%)3605(Top 63%)
HALF13.11 mi0.68 mi12215-1153118-763118-7614220(Top 49%)4304(Top 34%)4304(Top 75%)
25K15.53 mi2.42 mi12319-1043212-943212-9412995(Top 45%)3735(Top 30%)3735(Top 65%)
30K18.64 mi3.11 mi12555-2363397-1853397-18513726(Top 47%)4252(Top 34%)4252(Top 74%)
20M20.00 mi1.36 mi12747-1923543-1463543-14615280(Top 53%)5234(Top 42%)5234(Top 92%)
21M21.00 mi1.00 mi13005-2583705-1623705-16217007(Top 59%)6253(Top 50%)6253(Top 109%)
35K21.75 mi0.75 mi13096-913762-573762-5715525(Top 53%)5483(Top 44%)5483(Top 96%)
23M23.00 mi1.25 mi13392-2963955-1933955-19317992(Top 62%)6953(Top 55%)6953(Top 122%)
24M24.00 mi1.00 mi13732-3404178-2234178-22319242(Top 66%)7631(Top 61%)7631(Top 134%)
40K24.85 mi0.85 mi14602-8704704-5264704-52624864(Top 86%)10564(Top 84%)10564(Top 185%)
25.2M25.20 mi0.35 mi14704-1024770-664770-6619438(Top 67%)7771(Top 62%)7771(Top 136%)
FINISH26.22 mi1.02 mi15519-8155269-4995269-49925500(Top 88%)10888(Top 87%)10888(Top 190%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
Γ—21
+97ft-345ft

Overall

12561

Females

3328

F18-39

3328

5K→10K

3.1 - 6.2 mi

Top 41%
Γ—5
+79ft-138ft

Overall

11825

Females

2876

F18-39

2876

10K→15K

6.2 - 9.3 mi

Top 43%
Γ—3
+67ft-78ft

Overall

12561

Females

3328

F18-39

3328

15K→20K

9.3 - 12.4 mi

Top 44%
Γ—5
+106ft-86ft

Overall

12877

Females

3605

F18-39

3605

20K→HALF

12.4 - 13.1 mi

Top 49%
Γ—2
+19ft-37ft

Overall

14220

Females

4304

F18-39

4304

HALF→25K

13.1 - 15.5 mi

Top 45%
Γ—4
+66ft-88ft

Overall

12995

Females

3735

F18-39

3735

25K→30K

15.5 - 18.6 mi

Top 47%
Γ—9
+181ft-148ft

Overall

13726

Females

4252

F18-39

4252

30K→20M

18.6 - 20.0 mi

Top 53%
Γ—5
+64ft-50ft

Overall

15280

Females

5234

F18-39

5234

20M→21M

20.0 - 21.0 mi

Top 59%
Γ—8
+106ft-24ft

Overall

17007

Females

6253

F18-39

6253

21M→35K

21.0 - 21.8 mi

Top 53%
Γ—7
+17ft-86ft

Overall

15525

Females

5483

F18-39

5483

35K→23M

21.8 - 23.0 mi

Top 62%
Γ—5
+23ft-63ft

Overall

17992

Females

6953

F18-39

6953

23M→24M

23.0 - 24.0 mi

Top 66%
Γ—6
+12ft-82ft

Overall

19242

Females

7631

F18-39

7631

24M→40K

24.0 - 24.9 mi

Top 86%
Γ—1
+6ft-20ft

Overall

24864

Females

10564

F18-39

10564

40K→25.2M

24.9 - 25.2 mi

Top 67%
Γ—1
+13ft-16ft

Overall

19438

Females

7771

F18-39

7771

25.2M→FINISH

25.2 - 26.2 mi

Top 88%
Γ—2
+22ft-21ft

Overall

25500

Females

10888

F18-39

10888

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
749
Passed By
4874
Net Change
-4126
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#11393
5K β†’ 10K178358-181#11393#11574
10K β†’ 15K81397-316#11574#11890
15K β†’ 20K100310-210#11890#12100
20K β†’ HALF6121-115#12100#12215
HALF β†’ 25K90194-104#12215#12319
25K β†’ 30K121357-236#12319#12555
30K β†’ 20M46238-192#12555#12747
20M β†’ 21M34292-258#12747#13005
21M β†’ 35K28119-91#13005#13096
35K β†’ 23M30326-296#13096#13392
23M β†’ 24M23363-340#13392#13732
24M β†’ 40K3873-870#13732#14602
40K β†’ 25.2M7109-102#14602#14704
25.2M β†’ FINISH2817-815#14704#15519
TOTALS7494874-4126
πŸ“Š

Passing Analysis Visualizations

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

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace 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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Export & Support

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing