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BOSTON MARATHON 2026

Heather Zimmerman

Bib: 32553•F

MA

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Age Group (F50-54)
#0 / 1233
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
33:09
3.11 mi
Rank: #27491
Start → 5K
33:09 | 10:41/mi
10K
1:07:32
6.21 mi
Rank: #27676 (-185)
5K → 10K
34:23 | 11:05/mi
15K
1:44:54
9.32 mi
Rank: #28022 (-346)
10K → 15K
37:22 | 12:02/mi
20K
2:20:06
12.43 mi
Rank: #27867 (+155)
15K → 20K
35:12 | 11:20/mi
HALF
2:27:32
13.11 mi
Rank: #27833 (+34)
20K → HALF
7:26 | 10:55/mi
25K
2:56:30
15.53 mi
Rank: #27770 (+63)
HALF → 25K
28:58 | 11:57/mi
30K
3:35:58
18.64 mi
Rank: #27739 (+31)
25K → 30K
39:28 | 12:43/mi
20M
3:52:20
20.00 mi
Rank: #27672 (+67)
30K → 20M
16:22 | 12:03/mi
21M
4:05:58
21.00 mi
Rank: #27655 (+17)
20M → 21M
13:38 | 13:38/mi
35K
4:14:41
21.75 mi
Rank: #27623 (+32)
21M → 35K
8:43 | 11:40/mi
23M
4:33:44
23.00 mi
Rank: #27737 (-114)
35K → 23M
19:03 | 15:14/mi
24M
4:45:57
24.00 mi
Rank: #27724 (+13)
23M → 24M
12:13 | 12:13/mi
40K
4:56:19
24.85 mi
Rank: #27674 (+50)
24M → 40K
10:22 | 12:08/mi
25.2M
5:01:42
25.20 mi
Rank: #27686 (-12)
40K → 25.2M
5:23 | 15:37/mi
FINISH
5:12:40
26.22 mi
Rank: #27626 (+60)
25.2M → FINISH
10:58 | 10:46/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:27:32
Pace11:16 /mi
2nd Half
Distance13.11 mi
Time2:45:08
Pace12:36 /mi
📊Positive Split: 11.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:04:5333:0910:4133:09
10:41
-
10K
6.21 mi12:39:161:07:3210:5334:23
11:05
+0:24
15K
9.32 mi13:16:381:44:5411:1637:22
12:02
+0:57
20K
12.43 mi13:51:502:20:0611:1735:12
11:20
-0:42
HALF
13.11 mi13:59:162:27:3211:167:26
10:55
-0:25
25K
15.53 mi14:28:142:56:3011:2228:58
11:57
+1:02
30K
18.64 mi15:07:423:35:5811:3639:28
12:43
+0:46
20M
20.00 mi15:24:043:52:2011:3816:22
12:03
-0:40
21M
21.00 mi15:37:424:05:5811:4313:38
13:38
+1:35
35K
21.75 mi15:46:254:14:4111:438:43
11:40
-1:58
23M
23.00 mi16:05:284:33:4411:5519:03
15:14
+3:34
24M
24.00 mi16:17:414:45:5711:5512:13
12:13
-3:01
40K
24.85 mi16:28:034:56:1911:5610:22
12:08
-0:05
25.2M
25.20 mi16:33:265:01:4211:595:23
15:37
+3:29
FINISH
26.22 mi16:44:245:12:4011:5710:58
10:46
-4:51

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

10:41 /mi

Average Pace

11:56 /mi

Slowest Pace

15:37 /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

1:25:56

27% of race

Time at Steady Pace

3:08:40

60% of race

Time at Slower Pace

38:04

12% of race

Average Pace: 11:55 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi12:04:5333:0910:4133:09
10:41
#27491
10K
6.21 mi12:39:161:07:3210:5334:23
11:05
#27676
15K
9.32 mi13:16:381:44:5411:1637:22
12:02
#28022
20K
12.43 mi13:51:502:20:0611:1735:12
11:20
#27867
HALF
13.11 mi13:59:162:27:3211:167:26
10:55
#27833
25K
15.53 mi14:28:142:56:3011:2228:58
11:57
#27770
30K
18.64 mi15:07:423:35:5811:3639:28
12:43
#27739
20M
20.00 mi15:24:043:52:2011:3816:22
12:03
#27672
21M
21.00 mi15:37:424:05:5811:4313:38
13:38
#27655
35K
21.75 mi15:46:254:14:4111:438:43
11:40
#27623
23M
23.00 mi16:05:284:33:4411:5519:03
15:14
#27737
24M
24.00 mi16:17:414:45:5711:5512:13
12:13
#27724
40K
24.85 mi16:28:034:56:1911:5610:22
12:08
#27674
25.2M
25.20 mi16:33:265:01:4211:595:23
15:37
#27686
FINISH
26.22 mi16:44:245:12:4011:5710:58
10:46
#27626
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi27491115601156028378(Top 98%)12161(Top 97%)12161(Top 986%)
10K6.21 mi3.10 mi27676-18511682-12211682-12227762(Top 96%)11763(Top 94%)11763(Top 954%)
15K9.32 mi3.11 mi28022-34611901-21911901-21928378(Top 98%)12161(Top 97%)12161(Top 986%)
20K12.43 mi3.11 mi27867+15511818+8311818+8327360(Top 94%)11523(Top 92%)11523(Top 935%)
HALF13.11 mi0.68 mi27833+3411803+1511803+1527268(Top 94%)11519(Top 92%)11519(Top 934%)
25K15.53 mi2.42 mi27770+6311764+3911764+3927474(Top 95%)11647(Top 93%)11647(Top 945%)
30K18.64 mi3.11 mi27739+3111765-111765-127470(Top 95%)11715(Top 93%)11715(Top 950%)
20M20.00 mi1.36 mi27672+6711744+2111744+2126470(Top 91%)11233(Top 89%)11233(Top 911%)
21M21.00 mi1.00 mi27655+1711734+1011734+1027015(Top 93%)11567(Top 92%)11567(Top 938%)
35K21.75 mi0.75 mi27623+3211727+711727+726311(Top 91%)11206(Top 89%)11206(Top 909%)
23M23.00 mi1.25 mi27737-11411792-6511792-6528707(Top 99%)12454(Top 99%)12454(Top 1010%)
24M24.00 mi1.00 mi27724+13117921179226878(Top 93%)11553(Top 92%)11553(Top 937%)
40K24.85 mi0.85 mi27674+5011774+1811774+1826085(Top 90%)11191(Top 89%)11191(Top 908%)
25.2M25.20 mi0.35 mi27686-1211782-811782-828255(Top 97%)12260(Top 97%)12260(Top 994%)
FINISH26.22 mi1.02 mi27626+6011754+2811754+2825668(Top 88%)10985(Top 87%)10985(Top 891%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21
+97ft-345ft

Overall

28378

Females

12161

F50-54

12161

5K→10K

3.1 - 6.2 mi

Top 96%
×5
+79ft-138ft

Overall

27762

Females

11763

F50-54

11763

10K→15K

6.2 - 9.3 mi

Top 98%
×3
+67ft-78ft

Overall

28378

Females

12161

F50-54

12161

15K→20K

9.3 - 12.4 mi

Top 94%
×5
+106ft-86ft

Overall

27360

Females

11523

F50-54

11523

20K→HALF

12.4 - 13.1 mi

Top 94%
×2
+19ft-37ft

Overall

27268

Females

11519

F50-54

11519

HALF→25K

13.1 - 15.5 mi

Top 95%
×4
+66ft-88ft

Overall

27474

Females

11647

F50-54

11647

25K→30K

15.5 - 18.6 mi

Top 95%
×9
+181ft-148ft

Overall

27470

Females

11715

F50-54

11715

30K→20M

18.6 - 20.0 mi

Top 91%
×5
+64ft-50ft

Overall

26470

Females

11233

F50-54

11233

20M→21M

20.0 - 21.0 mi

Top 93%
×8
+106ft-24ft

Overall

27015

Females

11567

F50-54

11567

21M→35K

21.0 - 21.8 mi

Top 91%
×7
+17ft-86ft

Overall

26311

Females

11206

F50-54

11206

35K→23M

21.8 - 23.0 mi

Top 99%
×5
+23ft-63ft

Overall

28707

Females

12454

F50-54

12454

23M→24M

23.0 - 24.0 mi

Top 93%
×6
+12ft-82ft

Overall

26878

Females

11553

F50-54

11553

24M→40K

24.0 - 24.9 mi

Top 90%
×1
+6ft-20ft

Overall

26085

Females

11191

F50-54

11191

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1
+13ft-16ft

Overall

28255

Females

12260

F50-54

12260

25.2M→FINISH

25.2 - 26.2 mi

Top 88%
×2
+22ft-21ft

Overall

25668

Females

10985

F50-54

10985

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
810
Passed By
945
Net Change
-135
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27491
5K → 10K85270-185#27491#27676
10K → 15K26372-346#27676#28022
15K → 20K17015+155#28022#27867
20K → HALF373+34#27867#27833
HALF → 25K9532+63#27833#27770
25K → 30K8958+31#27770#27739
30K → 20M8013+67#27739#27672
20M → 21M3417+17#27672#27655
21M → 35K408+32#27655#27623
35K → 23M9123-114#27623#27737
23M → 24M229+13#27737#27724
24M → 40K544+50#27724#27674
40K → 25.2M719-12#27674#27686
25.2M → FINISH622+60#27686#27626
TOTALS810945-135
📊

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