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BOSTON MARATHON 2026

Heather Sims

Bib: 25649•F

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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 (F60-64)
#0 / 782
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
28:38
3.11 mi
Rank: #23513
Start → 5K
28:38 | 9:13/mi
10K
57:13
6.21 mi
Rank: #23583 (-70)
5K → 10K
28:35 | 9:13/mi
15K
1:27:41
9.32 mi
Rank: #24246 (-663)
10K → 15K
30:28 | 9:49/mi
20K
1:59:02
12.43 mi
Rank: #24550 (-304)
15K → 20K
31:21 | 10:06/mi
HALF
2:06:37
13.11 mi
Rank: #24753 (-203)
20K → HALF
7:35 | 11:08/mi
25K
2:30:28
15.53 mi
Rank: #24618 (+135)
HALF → 25K
23:51 | 9:51/mi
30K
3:01:56
18.64 mi
Rank: #24378 (+240)
25K → 30K
31:28 | 10:08/mi
20M
3:16:38
20.00 mi
Rank: #24397 (-19)
30K → 20M
14:42 | 10:50/mi
21M
3:27:04
21.00 mi
Rank: #24232 (+165)
20M → 21M
10:26 | 10:26/mi
35K
3:35:30
21.75 mi
Rank: #24321 (-89)
21M → 35K
8:26 | 11:17/mi
23M
3:47:51
23.00 mi
Rank: #24149 (+172)
35K → 23M
12:21 | 9:53/mi
24M
3:57:41
24.00 mi
Rank: #24055 (+94)
23M → 24M
9:50 | 9:50/mi
40K
4:06:27
24.85 mi
Rank: #23997 (+58)
24M → 40K
8:46 | 10:16/mi
25.2M
4:10:18
25.20 mi
Rank: #23976 (+21)
40K → 25.2M
3:51 | 11:10/mi
FINISH
4:19:46
26.22 mi
Rank: #23887 (+89)
25.2M → FINISH
9:28 | 9:18/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:06:37
Pace9:40 /mi
2nd Half
Distance13.11 mi
Time2:13:09
Pace10:10 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:34:5828:389:1328:38
9:13
-
10K
6.21 mi12:03:3357:139:1328:35
9:13
0:00
15K
9.32 mi12:34:011:27:419:2530:28
9:49
+0:36
20K
12.43 mi13:05:221:59:029:3531:21
10:06
+0:17
HALF
13.11 mi13:12:572:06:379:407:35
11:08
+1:02
25K
15.53 mi13:36:482:30:289:4223:51
9:51
-1:17
30K
18.64 mi14:08:163:01:569:4631:28
10:08
+0:17
20M
20.00 mi14:22:583:16:389:5014:42
10:50
+0:42
21M
21.00 mi14:33:243:27:049:5210:26
10:26
-0:24
35K
21.75 mi14:41:503:35:309:558:26
11:17
+0:51
23M
23.00 mi14:54:113:47:519:5512:21
9:53
-1:24
24M
24.00 mi15:04:013:57:419:559:50
9:50
-0:03
40K
24.85 mi15:12:474:06:279:558:46
10:16
+0:26
25.2M
25.20 mi15:16:384:10:189:563:51
11:10
+0:54
FINISH
26.22 mi15:26:064:19:469:559:28
9:18
-1:52

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

9:13 /mi

Average Pace

9:55 /mi

Slowest Pace

11:17 /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

1:06:41

26% of race

Time at Steady Pace

2:38:31

61% of race

Time at Slower Pace

34:34

13% of race

Average Pace: 9:54 /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 mi11:34:5828:389:1328:38
9:13
#23513
10K
6.21 mi12:03:3357:139:1328:35
9:13
#23583
15K
9.32 mi12:34:011:27:419:2530:28
9:49
#24246
20K
12.43 mi13:05:221:59:029:3531:21
10:06
#24550
HALF
13.11 mi13:12:572:06:379:407:35
11:08
#24753
25K
15.53 mi13:36:482:30:289:4223:51
9:51
#24618
30K
18.64 mi14:08:163:01:569:4631:28
10:08
#24378
20M
20.00 mi14:22:583:16:389:5014:42
10:50
#24397
21M
21.00 mi14:33:243:27:049:5210:26
10:26
#24232
35K
21.75 mi14:41:503:35:309:558:26
11:17
#24321
23M
23.00 mi14:54:113:47:519:5512:21
9:53
#24149
24M
24.00 mi15:04:013:57:419:559:50
9:50
#24055
40K
24.85 mi15:12:474:06:279:558:46
10:16
#23997
25.2M
25.20 mi15:16:384:10:189:563:51
11:10
#23976
FINISH
26.22 mi15:26:064:19:469:559:28
9:18
#23887
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi235139431943125234(Top 87%)10298(Top 82%)10298(Top 1317%)
10K6.21 mi3.10 mi23583-709464-339464-3323634(Top 81%)9478(Top 75%)9478(Top 1212%)
15K9.32 mi3.11 mi24246-6639769-3059769-30525234(Top 87%)10298(Top 82%)10298(Top 1317%)
20K12.43 mi3.11 mi24550-3049940-1719940-17125252(Top 87%)10330(Top 82%)10330(Top 1321%)
HALF13.11 mi0.68 mi24753-20310051-11110051-11127507(Top 95%)11649(Top 93%)11649(Top 1490%)
25K15.53 mi2.42 mi24618+1359990+619990+6123898(Top 82%)9668(Top 77%)9668(Top 1236%)
30K18.64 mi3.11 mi24378+2409893+979893+9723453(Top 81%)9537(Top 76%)9537(Top 1220%)
20M20.00 mi1.36 mi24397-199920-279920-2724559(Top 85%)10218(Top 81%)10218(Top 1307%)
21M21.00 mi1.00 mi24232+1659843+779843+7721796(Top 75%)8795(Top 70%)8795(Top 1125%)
35K21.75 mi0.75 mi24321-899904-619904-6125721(Top 89%)10890(Top 87%)10890(Top 1393%)
23M23.00 mi1.25 mi24149+1729837+679837+6721776(Top 75%)8892(Top 71%)8892(Top 1137%)
24M24.00 mi1.00 mi24055+949808+299808+2922357(Top 77%)9217(Top 73%)9217(Top 1179%)
40K24.85 mi0.85 mi23997+589794+149794+1422607(Top 78%)9410(Top 75%)9410(Top 1203%)
25.2M25.20 mi0.35 mi23976+219789+59789+522801(Top 79%)9504(Top 76%)9504(Top 1215%)
FINISH26.22 mi1.02 mi23887+899750+399750+3921639(Top 75%)8887(Top 71%)8887(Top 1136%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21
+97ft-345ft

Overall

25234

Females

10298

F60-64

10298

5K→10K

3.1 - 6.2 mi

Top 81%
×5
+79ft-138ft

Overall

23634

Females

9478

F60-64

9478

10K→15K

6.2 - 9.3 mi

Top 87%
×3
+67ft-78ft

Overall

25234

Females

10298

F60-64

10298

15K→20K

9.3 - 12.4 mi

Top 87%
×5
+106ft-86ft

Overall

25252

Females

10330

F60-64

10330

20K→HALF

12.4 - 13.1 mi

Top 95%
×2
+19ft-37ft

Overall

27507

Females

11649

F60-64

11649

HALF→25K

13.1 - 15.5 mi

Top 82%
×4
+66ft-88ft

Overall

23898

Females

9668

F60-64

9668

25K→30K

15.5 - 18.6 mi

Top 81%
×9
+181ft-148ft

Overall

23453

Females

9537

F60-64

9537

30K→20M

18.6 - 20.0 mi

Top 85%
×5
+64ft-50ft

Overall

24559

Females

10218

F60-64

10218

20M→21M

20.0 - 21.0 mi

Top 75%
×8
+106ft-24ft

Overall

21796

Females

8795

F60-64

8795

21M→35K

21.0 - 21.8 mi

Top 89%
×7
+17ft-86ft

Overall

25721

Females

10890

F60-64

10890

35K→23M

21.8 - 23.0 mi

Top 75%
×5
+23ft-63ft

Overall

21776

Females

8892

F60-64

8892

23M→24M

23.0 - 24.0 mi

Top 77%
×6
+12ft-82ft

Overall

22357

Females

9217

F60-64

9217

24M→40K

24.0 - 24.9 mi

Top 78%
×1
+6ft-20ft

Overall

22607

Females

9410

F60-64

9410

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1
+13ft-16ft

Overall

22801

Females

9504

F60-64

9504

25.2M→FINISH

25.2 - 26.2 mi

Top 75%
×2
+22ft-21ft

Overall

21639

Females

8887

F60-64

8887

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1426*
Passed By
1089
Net Change
-374
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23513
5K → 10K197200-70#23513#23583
10K → 15K28200-663#23583#24246
15K → 20K44200-304#24246#24550
20K → HALF2200-203#24550#24753
HALF → 25K16328+135#24753#24618
25K → 30K274*34+240#24618#24378
30K → 20M5877-19#24378#24397
20M → 21M1705+165#24397#24232
21M → 35K13102-89#24232#24321
35K → 23M1808+172#24321#24149
23M → 24M995+94#24149#24055
24M → 40K7416+58#24055#23997
40K → 25.2M298+21#23997#23976
25.2M → FINISH956+89#23976#23887
TOTALS1426*1089-374

* 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