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BOSTON MARATHON 2026

Karen Stellpflug

Bib: 22796•F

NC

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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 (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
26:34
3.11 mi
Rank: #20375
Start → 5K
26:34 | 8:34/mi
10K
53:26
6.21 mi
Rank: #20755 (-380)
5K → 10K
26:52 | 8:39/mi
15K
1:21:07
9.32 mi
Rank: #21289 (-534)
10K → 15K
27:41 | 8:55/mi
20K
1:49:47
12.43 mi
Rank: #21704 (-415)
15K → 20K
28:40 | 9:14/mi
HALF
1:55:54
13.11 mi
Rank: #21749 (-45)
20K → HALF
6:07 | 8:59/mi
25K
2:20:54
15.53 mi
Rank: #22585 (-836)
HALF → 25K
25:00 | 10:19/mi
30K
2:51:03
18.64 mi
Rank: #22538 (+47)
25K → 30K
30:09 | 9:43/mi
20M
3:04:31
20.00 mi
Rank: #22519 (+19)
30K → 20M
13:28 | 9:55/mi
21M
3:15:25
21.00 mi
Rank: #22542 (-23)
20M → 21M
10:54 | 10:54/mi
35K
3:23:17
21.75 mi
Rank: #22626 (-84)
21M → 35K
7:52 | 10:31/mi
23M
3:36:19
23.00 mi
Rank: #22677 (-51)
35K → 23M
13:02 | 10:25/mi
24M
3:45:32
24.00 mi
Rank: #22567 (+110)
23M → 24M
9:13 | 9:13/mi
40K
3:53:57
24.85 mi
Rank: #22511 (+56)
24M → 40K
8:25 | 9:51/mi
25.2M
3:57:21
25.20 mi
Rank: #22449 (+62)
40K → 25.2M
3:24 | 9:52/mi
FINISH
4:06:22
26.22 mi
Rank: #22373 (+76)
25.2M → FINISH
9:01 | 8:51/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:55:54
Pace8:51 /mi
2nd Half
Distance13.11 mi
Time2:10:28
Pace9:58 /mi
📊Positive Split: 12.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:29:1826:348:3426:34
8:34
-
10K
6.21 mi11:56:1053:268:3626:52
8:39
+0:05
15K
9.32 mi12:23:511:21:078:4327:41
8:55
+0:16
20K
12.43 mi12:52:311:49:478:5128:40
9:14
+0:19
HALF
13.11 mi12:58:381:55:548:516:07
8:59
-0:15
25K
15.53 mi13:23:382:20:549:0525:00
10:19
+1:20
30K
18.64 mi13:53:472:51:039:1130:09
9:43
-0:36
20M
20.00 mi14:07:153:04:319:1413:28
9:55
+0:12
21M
21.00 mi14:18:093:15:259:1910:54
10:54
+0:59
35K
21.75 mi14:26:013:23:179:217:52
10:31
-0:23
23M
23.00 mi14:39:033:36:199:2513:02
10:25
-0:06
24M
24.00 mi14:48:163:45:329:249:13
9:13
-1:12
40K
24.85 mi14:56:413:53:579:258:25
9:51
+0:38
25.2M
25.20 mi15:00:053:57:219:263:24
9:52
+0:01
FINISH
26.22 mi15:09:064:06:229:259:01
8:51
-1:01

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

8:34 /mi

Average Pace

9:24 /mi

Slowest Pace

10:54 /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

2:14:08

54% of race

Time at Steady Pace

55:26

23% of race

Time at Slower Pace

56:48

23% of race

Average Pace: 9:24 /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 mi11:29:1826:348:3426:34
8:34
#20375
10K
6.21 mi11:56:1053:268:3626:52
8:39
#20755
15K
9.32 mi12:23:511:21:078:4327:41
8:55
#21289
20K
12.43 mi12:52:311:49:478:5128:40
9:14
#21704
HALF
13.11 mi12:58:381:55:548:516:07
8:59
#21749
25K
15.53 mi13:23:382:20:549:0525:00
10:19
#22585
30K
18.64 mi13:53:472:51:039:1130:09
9:43
#22538
20M
20.00 mi14:07:153:04:319:1413:28
9:55
#22519
21M
21.00 mi14:18:093:15:259:1910:54
10:54
#22542
35K
21.75 mi14:26:013:23:179:217:52
10:31
#22626
23M
23.00 mi14:39:033:36:199:2513:02
10:25
#22677
24M
24.00 mi14:48:163:45:329:249:13
9:13
#22567
40K
24.85 mi14:56:413:53:579:258:25
9:51
#22511
25.2M
25.20 mi15:00:053:57:219:263:24
9:52
#22449
FINISH
26.22 mi15:09:064:06:229:259:01
8:51
#22373
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 mi203757846784622274(Top 77%)8768(Top 70%)8768(Top 491%)
10K6.21 mi3.10 mi20755-3808021-1758021-17521170(Top 73%)8220(Top 65%)8220(Top 460%)
15K9.32 mi3.11 mi21289-5348300-2798300-27922274(Top 77%)8768(Top 70%)8768(Top 491%)
20K12.43 mi3.11 mi21704-4158517-2178517-21722869(Top 79%)9105(Top 72%)9105(Top 510%)
HALF13.11 mi0.68 mi21749-458531-148531-1422678(Top 78%)8998(Top 72%)8998(Top 504%)
25K15.53 mi2.42 mi22585-8368950-4198950-41925044(Top 86%)10257(Top 82%)10257(Top 574%)
30K18.64 mi3.11 mi22538+478968-188968-1822287(Top 77%)8911(Top 71%)8911(Top 499%)
20M20.00 mi1.36 mi22519+198969-18969-122343(Top 77%)9033(Top 72%)9033(Top 506%)
21M21.00 mi1.00 mi22542-238999-308999-3022895(Top 79%)9364(Top 74%)9364(Top 524%)
35K21.75 mi0.75 mi22626-849053-549053-5424339(Top 84%)10162(Top 81%)10162(Top 569%)
23M23.00 mi1.25 mi22677-519102-499102-4923180(Top 80%)9609(Top 76%)9609(Top 538%)
24M24.00 mi1.00 mi22567+1109059+439059+4320365(Top 70%)8238(Top 65%)8238(Top 461%)
40K24.85 mi0.85 mi22511+569047+129047+1221503(Top 74%)8842(Top 70%)8842(Top 495%)
25.2M25.20 mi0.35 mi22449+629021+269021+2618955(Top 65%)7556(Top 60%)7556(Top 423%)
FINISH26.22 mi1.02 mi22373+768986+358986+3519887(Top 69%)8033(Top 64%)8033(Top 450%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21
+97ft-345ft

Overall

22274

Females

8768

F45-49

8768

5K→10K

3.1 - 6.2 mi

Top 73%
×5
+79ft-138ft

Overall

21170

Females

8220

F45-49

8220

10K→15K

6.2 - 9.3 mi

Top 77%
×3
+67ft-78ft

Overall

22274

Females

8768

F45-49

8768

15K→20K

9.3 - 12.4 mi

Top 79%
×5
+106ft-86ft

Overall

22869

Females

9105

F45-49

9105

20K→HALF

12.4 - 13.1 mi

Top 78%
×2
+19ft-37ft

Overall

22678

Females

8998

F45-49

8998

HALF→25K

13.1 - 15.5 mi

Top 86%
×4
+66ft-88ft

Overall

25044

Females

10257

F45-49

10257

25K→30K

15.5 - 18.6 mi

Top 77%
×9
+181ft-148ft

Overall

22287

Females

8911

F45-49

8911

30K→20M

18.6 - 20.0 mi

Top 77%
×5
+64ft-50ft

Overall

22343

Females

9033

F45-49

9033

20M→21M

20.0 - 21.0 mi

Top 79%
×8
+106ft-24ft

Overall

22895

Females

9364

F45-49

9364

21M→35K

21.0 - 21.8 mi

Top 84%
×7
+17ft-86ft

Overall

24339

Females

10162

F45-49

10162

35K→23M

21.8 - 23.0 mi

Top 80%
×5
+23ft-63ft

Overall

23180

Females

9609

F45-49

9609

23M→24M

23.0 - 24.0 mi

Top 70%
×6
+12ft-82ft

Overall

20365

Females

8238

F45-49

8238

24M→40K

24.0 - 24.9 mi

Top 74%
×1
+6ft-20ft

Overall

21503

Females

8842

F45-49

8842

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1
+13ft-16ft

Overall

18955

Females

7556

F45-49

7556

25.2M→FINISH

25.2 - 26.2 mi

Top 69%
×2
+22ft-21ft

Overall

19887

Females

8033

F45-49

8033

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1068
Passed By
3066
Net Change
-1998
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20375
5K → 10K139519-380#20375#20755
10K → 15K56590-534#20755#21289
15K → 20K58473-415#21289#21704
20K → HALF2065-45#21704#21749
HALF → 25K16852-836#21749#22585
25K → 30K210163+47#22585#22538
30K → 20M8970+19#22538#22519
20M → 21M6386-23#22519#22542
21M → 35K18102-84#22542#22626
35K → 23M59110-51#22626#22677
23M → 24M1199+110#22677#22567
24M → 40K7418+56#22567#22511
40K → 25.2M631+62#22511#22449
25.2M → FINISH848+76#22449#22373
TOTALS10683066-1998
📊

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