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BOSTON MARATHON 2026

Laura Grossman

Bib: 22526•F

AK

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0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Age Group (F45-49)
#0 / 1786
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
25:52
3.11 mi
Rank: #19045
Start → 5K
25:52 | 8:20/mi
10K
51:33
6.21 mi
Rank: #18999 (+46)
5K → 10K
25:41 | 8:16/mi
15K
1:17:51
9.32 mi
Rank: #19308 (-309)
10K → 15K
26:18 | 8:28/mi
20K
1:45:15
12.43 mi
Rank: #19745 (-437)
15K → 20K
27:24 | 8:50/mi
HALF
1:50:58
13.11 mi
Rank: #19733 (+12)
20K → HALF
5:43 | 8:24/mi
25K
2:11:55
15.53 mi
Rank: #19674 (+59)
HALF → 25K
20:57 | 8:39/mi
30K
2:40:07
18.64 mi
Rank: #19728 (-54)
25K → 30K
28:12 | 9:05/mi
20M
2:52:29
20.00 mi
Rank: #19712 (+16)
30K → 20M
12:22 | 9:07/mi
21M
3:02:27
21.00 mi
Rank: #19745 (-33)
20M → 21M
9:58 | 9:58/mi
35K
3:09:04
21.75 mi
Rank: #19727 (+18)
21M → 35K
6:37 | 8:51/mi
23M
3:20:35
23.00 mi
Rank: #19724 (+3)
35K → 23M
11:31 | 9:13/mi
24M
3:29:39
24.00 mi
Rank: #19724
23M → 24M
9:04 | 9:04/mi
40K
3:37:29
24.85 mi
Rank: #19709 (+15)
24M → 40K
7:50 | 9:10/mi
25.2M
3:40:48
25.20 mi
Rank: #19681 (+28)
40K → 25.2M
3:19 | 9:38/mi
FINISH
3:49:46
26.22 mi
Rank: #19691 (-10)
25.2M → FINISH
8:58 | 8:48/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:50:58
Pace8:28 /mi
2nd Half
Distance13.11 mi
Time1:58:48
Pace9:04 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:2625:528:2025:52
8:20
-
10K
6.21 mi11:53:0751:338:1825:41
8:16
-0:04
15K
9.32 mi12:19:251:17:518:2226:18
8:28
+0:12
20K
12.43 mi12:46:491:45:158:2927:24
8:50
+0:22
HALF
13.11 mi12:52:321:50:588:285:43
8:24
-0:26
25K
15.53 mi13:13:292:11:558:3020:57
8:39
+0:15
30K
18.64 mi13:41:412:40:078:3628:12
9:05
+0:26
20M
20.00 mi13:54:032:52:298:3812:22
9:07
+0:02
21M
21.00 mi14:04:013:02:278:429:58
9:58
+0:51
35K
21.75 mi14:10:383:09:048:426:37
8:51
-1:07
23M
23.00 mi14:22:093:20:358:4411:31
9:13
+0:22
24M
24.00 mi14:31:133:29:398:459:04
9:04
-0:09
40K
24.85 mi14:39:033:37:298:467:50
9:10
+0:06
25.2M
25.20 mi14:42:223:40:488:463:19
9:38
+0:28
FINISH
26.22 mi14:51:203:49:468:478:58
8:48
-0:50

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

8:16 /mi

Average Pace

8:46 /mi

Slowest Pace

9:58 /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

1:23:34

36% of race

Time at Steady Pace

1:13:00

32% of race

Time at Slower Pace

1:13:12

32% of race

Average Pace: 8:46 /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 mi11:27:2625:528:2025:52
8:20
#19045
10K
6.21 mi11:53:0751:338:1825:41
8:16
#18999
15K
9.32 mi12:19:251:17:518:2226:18
8:28
#19308
20K
12.43 mi12:46:491:45:158:2927:24
8:50
#19745
HALF
13.11 mi12:52:321:50:588:285:43
8:24
#19733
25K
15.53 mi13:13:292:11:558:3020:57
8:39
#19674
30K
18.64 mi13:41:412:40:078:3628:12
9:05
#19728
20M
20.00 mi13:54:032:52:298:3812:22
9:07
#19712
21M
21.00 mi14:04:013:02:278:429:58
9:58
#19745
35K
21.75 mi14:10:383:09:048:426:37
8:51
#19727
23M
23.00 mi14:22:093:20:358:4411:31
9:13
#19724
24M
24.00 mi14:31:133:29:398:459:04
9:04
#19724
40K
24.85 mi14:39:033:37:298:467:50
9:10
#19709
25.2M
25.20 mi14:42:223:40:488:463:19
9:38
#19681
FINISH
26.22 mi14:51:203:49:468:478:58
8:48
#19691
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi190457113711319951(Top 69%)7550(Top 60%)7550(Top 423%)
10K6.21 mi3.10 mi18999+467069+447069+4418979(Top 65%)7019(Top 56%)7019(Top 393%)
15K9.32 mi3.11 mi19308-3097224-1557224-15519951(Top 69%)7550(Top 60%)7550(Top 423%)
20K12.43 mi3.11 mi19745-4377481-2577481-25721068(Top 73%)8170(Top 65%)8170(Top 457%)
HALF13.11 mi0.68 mi19733+127474+77474+719606(Top 68%)7385(Top 59%)7385(Top 413%)
25K15.53 mi2.42 mi19674+597451+237451+2319408(Top 67%)7354(Top 58%)7354(Top 412%)
30K18.64 mi3.11 mi19728-547507-567507-5619963(Top 69%)7718(Top 61%)7718(Top 432%)
20M20.00 mi1.36 mi19712+167525-187525-1819454(Top 67%)7520(Top 60%)7520(Top 421%)
21M21.00 mi1.00 mi19745-337557-327557-3220317(Top 70%)8021(Top 64%)8021(Top 449%)
35K21.75 mi0.75 mi19727+187554+37554+319381(Top 67%)7642(Top 61%)7642(Top 428%)
23M23.00 mi1.25 mi19724+37581-277581-2719450(Top 67%)7704(Top 61%)7704(Top 431%)
24M24.00 mi1.00 mi197247589-87589-819759(Top 68%)7932(Top 63%)7932(Top 444%)
40K24.85 mi0.85 mi19709+157587+27587+219154(Top 66%)7657(Top 61%)7657(Top 429%)
25.2M25.20 mi0.35 mi19681+287582+57582+517965(Top 62%)7028(Top 56%)7028(Top 394%)
FINISH26.22 mi1.02 mi19691-107598-167598-1619653(Top 68%)7908(Top 63%)7908(Top 443%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21
+97ft-345ft

Overall

19951

Females

7550

F45-49

7550

5K→10K

3.1 - 6.2 mi

Top 65%
×5
+79ft-138ft

Overall

18979

Females

7019

F45-49

7019

10K→15K

6.2 - 9.3 mi

Top 69%
×3
+67ft-78ft

Overall

19951

Females

7550

F45-49

7550

15K→20K

9.3 - 12.4 mi

Top 73%
×5
+106ft-86ft

Overall

21068

Females

8170

F45-49

8170

20K→HALF

12.4 - 13.1 mi

Top 68%
×2
+19ft-37ft

Overall

19606

Females

7385

F45-49

7385

HALF→25K

13.1 - 15.5 mi

Top 67%
×4
+66ft-88ft

Overall

19408

Females

7354

F45-49

7354

25K→30K

15.5 - 18.6 mi

Top 69%
×9
+181ft-148ft

Overall

19963

Females

7718

F45-49

7718

30K→20M

18.6 - 20.0 mi

Top 67%
×5
+64ft-50ft

Overall

19454

Females

7520

F45-49

7520

20M→21M

20.0 - 21.0 mi

Top 70%
×8
+106ft-24ft

Overall

20317

Females

8021

F45-49

8021

21M→35K

21.0 - 21.8 mi

Top 67%
×7
+17ft-86ft

Overall

19381

Females

7642

F45-49

7642

35K→23M

21.8 - 23.0 mi

Top 67%
×5
+23ft-63ft

Overall

19450

Females

7704

F45-49

7704

23M→24M

23.0 - 24.0 mi

Top 68%
×6
+12ft-82ft

Overall

19759

Females

7932

F45-49

7932

24M→40K

24.0 - 24.9 mi

Top 66%
×1
+6ft-20ft

Overall

19154

Females

7657

F45-49

7657

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1
+13ft-16ft

Overall

17965

Females

7028

F45-49

7028

25.2M→FINISH

25.2 - 26.2 mi

Top 68%
×2
+22ft-21ft

Overall

19653

Females

7908

F45-49

7908

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1279*
Passed By
1421
Net Change
-646
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19045
5K → 10K246*200+46#19045#18999
10K → 15K83200-309#18999#19308
15K → 20K51200-437#19308#19745
20K → HALF3422+12#19745#19733
HALF → 25K14889+59#19733#19674
25K → 30K170200-54#19674#19728
30K → 20M10084+16#19728#19712
20M → 21M74107-33#19712#19745
21M → 35K5436+18#19745#19727
35K → 23M8885+3#19727#19724
23M → 24M67670#19724#19724
24M → 40K6752+15#19724#19709
40K → 25.2M379+28#19709#19681
25.2M → FINISH6070-10#19681#19691
TOTALS1279*1421-646

* 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