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BOSTON MARATHON 2026

Sara Klemmensen

Bib: 19572•F

MN

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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 (F40-44)
#0 / 1737
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
27:25
3.11 mi
Rank: #21822
Start → 5K
27:25 | 8:50/mi
10K
54:38
6.21 mi
Rank: #21799 (+23)
5K → 10K
27:13 | 8:46/mi
15K
1:22:02
9.32 mi
Rank: #21793 (+6)
10K → 15K
27:24 | 8:50/mi
20K
1:50:20
12.43 mi
Rank: #21928 (-135)
15K → 20K
28:18 | 9:07/mi
HALF
1:56:30
13.11 mi
Rank: #21982 (-54)
20K → HALF
6:10 | 9:03/mi
25K
2:18:41
15.53 mi
Rank: #21923 (+59)
HALF → 25K
22:11 | 9:09/mi
30K
2:50:02
18.64 mi
Rank: #22284 (-361)
25K → 30K
31:21 | 10:06/mi
20M
3:01:58
20.00 mi
Rank: #21976 (+308)
30K → 20M
11:56 | 8:48/mi
21M
3:11:29
21.00 mi
Rank: #21781 (+195)
20M → 21M
9:31 | 9:31/mi
35K
3:18:04
21.75 mi
Rank: #21692 (+89)
21M → 35K
6:35 | 8:48/mi
23M
3:29:16
23.00 mi
Rank: #21518 (+174)
35K → 23M
11:12 | 8:57/mi
24M
3:38:06
24.00 mi
Rank: #21403 (+115)
23M → 24M
8:50 | 8:50/mi
40K
3:45:51
24.85 mi
Rank: #21325 (+78)
24M → 40K
7:45 | 9:04/mi
25.2M
3:49:12
25.20 mi
Rank: #21282 (+43)
40K → 25.2M
3:21 | 9:43/mi
FINISH
3:57:32
26.22 mi
Rank: #21107 (+175)
25.2M → FINISH
8:20 | 8:11/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:56:30
Pace8:54 /mi
2nd Half
Distance13.11 mi
Time2:01:02
Pace9:14 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:11:4727:258:5027:25
8:50
-
10K
6.21 mi11:39:0054:388:4827:13
8:46
-0:04
15K
9.32 mi12:06:241:22:028:4927:24
8:50
+0:04
20K
12.43 mi12:34:421:50:208:5328:18
9:07
+0:17
HALF
13.11 mi12:40:521:56:308:546:10
9:03
-0:04
25K
15.53 mi13:03:032:18:418:5622:11
9:09
+0:06
30K
18.64 mi13:34:242:50:029:0831:21
10:06
+0:57
20M
20.00 mi13:46:203:01:589:0611:56
8:48
-1:18
21M
21.00 mi13:55:513:11:299:089:31
9:31
+0:43
35K
21.75 mi14:02:263:18:049:076:35
8:48
-0:43
23M
23.00 mi14:13:383:29:169:0611:12
8:57
+0:09
24M
24.00 mi14:22:283:38:069:068:50
8:50
-0:07
40K
24.85 mi14:30:133:45:519:067:45
9:04
+0:14
25.2M
25.20 mi14:33:343:49:129:063:21
9:43
+0:39
FINISH
26.22 mi14:41:543:57:329:048:20
8:11
-1:32

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

8:11 /mi

Average Pace

9:04 /mi

Slowest Pace

10:06 /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

8:20

4% of race

Time at Steady Pace

3:04:59

78% of race

Time at Slower Pace

44:13

19% of race

Average Pace: 9:04 /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 mi11:11:4727:258:5027:25
8:50
#21822
10K
6.21 mi11:39:0054:388:4827:13
8:46
#21799
15K
9.32 mi12:06:241:22:028:4927:24
8:50
#21793
20K
12.43 mi12:34:421:50:208:5328:18
9:07
#21928
HALF
13.11 mi12:40:521:56:308:546:10
9:03
#21982
25K
15.53 mi13:03:032:18:418:5622:11
9:09
#21923
30K
18.64 mi13:34:242:50:029:0831:21
10:06
#22284
20M
20.00 mi13:46:203:01:589:0611:56
8:48
#21976
21M
21.00 mi13:55:513:11:299:089:31
9:31
#21781
35K
21.75 mi14:02:263:18:049:076:35
8:48
#21692
23M
23.00 mi14:13:383:29:169:0611:12
8:57
#21518
24M
24.00 mi14:22:283:38:069:068:50
8:50
#21403
40K
24.85 mi14:30:133:45:519:067:45
9:04
#21325
25.2M
25.20 mi14:33:343:49:129:063:21
9:43
#21282
FINISH
26.22 mi14:41:543:57:329:048:20
8:11
#21107
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi218228604860421836(Top 75%)8559(Top 68%)8559(Top 493%)
10K6.21 mi3.10 mi21799+238567+378567+3721721(Top 75%)8507(Top 68%)8507(Top 490%)
15K9.32 mi3.11 mi21793+68558+98558+921836(Top 75%)8559(Top 68%)8559(Top 493%)
20K12.43 mi3.11 mi21928-1358620-628620-6222397(Top 77%)8859(Top 70%)8859(Top 510%)
HALF13.11 mi0.68 mi21982-548647-278647-2722950(Top 79%)9127(Top 73%)9127(Top 525%)
25K15.53 mi2.42 mi21923+598619+288619+2821808(Top 75%)8577(Top 68%)8577(Top 494%)
30K18.64 mi3.11 mi22284-3618827-2088827-20823349(Top 80%)9479(Top 75%)9479(Top 546%)
20M20.00 mi1.36 mi21976+3088682+1458682+14517926(Top 62%)6722(Top 53%)6722(Top 387%)
21M21.00 mi1.00 mi21781+1958601+818601+8118619(Top 64%)7130(Top 57%)7130(Top 410%)
35K21.75 mi0.75 mi21692+898568+338568+3319175(Top 66%)7543(Top 60%)7543(Top 434%)
23M23.00 mi1.25 mi21518+1748477+918477+9118283(Top 63%)7111(Top 57%)7111(Top 409%)
24M24.00 mi1.00 mi21403+1158430+478430+4718743(Top 65%)7390(Top 59%)7390(Top 425%)
40K24.85 mi0.85 mi21325+788404+268404+2618737(Top 65%)7451(Top 59%)7451(Top 429%)
25.2M25.20 mi0.35 mi21282+438387+178387+1718355(Top 63%)7247(Top 58%)7247(Top 417%)
FINISH26.22 mi1.02 mi21107+1758310+778310+7716338(Top 56%)6146(Top 49%)6146(Top 354%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21
+97ft-345ft

Overall

21836

Females

8559

F40-44

8559

5K→10K

3.1 - 6.2 mi

Top 75%
×5
+79ft-138ft

Overall

21721

Females

8507

F40-44

8507

10K→15K

6.2 - 9.3 mi

Top 75%
×3
+67ft-78ft

Overall

21836

Females

8559

F40-44

8559

15K→20K

9.3 - 12.4 mi

Top 77%
×5
+106ft-86ft

Overall

22397

Females

8859

F40-44

8859

20K→HALF

12.4 - 13.1 mi

Top 79%
×2
+19ft-37ft

Overall

22950

Females

9127

F40-44

9127

HALF→25K

13.1 - 15.5 mi

Top 75%
×4
+66ft-88ft

Overall

21808

Females

8577

F40-44

8577

25K→30K

15.5 - 18.6 mi

Top 80%
×9
+181ft-148ft

Overall

23349

Females

9479

F40-44

9479

30K→20M

18.6 - 20.0 mi

Top 62%
×5
+64ft-50ft

Overall

17926

Females

6722

F40-44

6722

20M→21M

20.0 - 21.0 mi

Top 64%
×8
+106ft-24ft

Overall

18619

Females

7130

F40-44

7130

21M→35K

21.0 - 21.8 mi

Top 66%
×7
+17ft-86ft

Overall

19175

Females

7543

F40-44

7543

35K→23M

21.8 - 23.0 mi

Top 63%
×5
+23ft-63ft

Overall

18283

Females

7111

F40-44

7111

23M→24M

23.0 - 24.0 mi

Top 65%
×6
+12ft-82ft

Overall

18743

Females

7390

F40-44

7390

24M→40K

24.0 - 24.9 mi

Top 65%
×1
+6ft-20ft

Overall

18737

Females

7451

F40-44

7451

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1
+13ft-16ft

Overall

18355

Females

7247

F40-44

7247

25.2M→FINISH

25.2 - 26.2 mi

Top 56%
×2
+22ft-21ft

Overall

16338

Females

6146

F40-44

6146

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Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2073
Passed By
1358
Net Change
+715
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21822
5K → 10K294271+23#21822#21799
10K → 15K164158+6#21799#21793
15K → 20K128263-135#21793#21928
20K → HALF1771-54#21928#21982
HALF → 25K159100+59#21982#21923
25K → 30K80441-361#21923#22284
30K → 20M3080+308#22284#21976
20M → 21M20510+195#21976#21781
21M → 35K934+89#21781#21692
35K → 23M1773+174#21692#21518
23M → 24M12914+115#21518#21403
24M → 40K9416+78#21403#21325
40K → 25.2M507+43#21325#21282
25.2M → FINISH1750+175#21282#21107
TOTALS20731358+715

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📊

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