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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Callie Pfaff

Bib: 18536 •F •Age: N/A

FL

Boston Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Age Group (F18-39)
#0 / 5716
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
26:51
3.11 mi
Rank: #20874
Start → 5K
26:51 | 8:39/mi
10K
54:09
6.21 mi
Rank: #21405 (-531)
5K → 10K
27:18 | 8:48/mi
15K
1:21:39
9.32 mi
Rank: #21578 (-173)
10K → 15K
27:30 | 8:52/mi
20K
1:49:29
12.43 mi
Rank: #21598 (-20)
15K → 20K
27:50 | 8:58/mi
HALF
1:55:19
13.11 mi
Rank: #21548 (+50)
20K → HALF
5:50 | 8:34/mi
25K
2:17:01
15.53 mi
Rank: #21415 (+133)
HALF → 25K
21:42 | 8:57/mi
30K
2:45:08
18.64 mi
Rank: #21108 (+307)
25K → 30K
28:07 | 9:03/mi
20M
2:58:05
20.00 mi
Rank: #21097 (+11)
30K → 20M
12:57 | 9:33/mi
21M
3:08:22
21.00 mi
Rank: #21144 (-47)
20M → 21M
10:17 | 10:17/mi
35K
3:14:54
21.75 mi
Rank: #21067 (+77)
21M → 35K
6:32 | 8:44/mi
23M
3:26:58
23.00 mi
Rank: #21073 (-6)
35K → 23M
12:04 | 9:39/mi
24M
3:35:46
24.00 mi
Rank: #20969 (+104)
23M → 24M
8:48 | 8:48/mi
40K
3:43:32
24.85 mi
Rank: #20895 (+74)
24M → 40K
7:46 | 9:06/mi
25.2M
3:46:53
25.20 mi
Rank: #20836 (+59)
40K → 25.2M
3:21 | 9:43/mi
FINISH
3:55:58
26.22 mi
Rank: #20844 (-8)
25.2M → FINISH
9:05 | 8:55/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:55:19
Pace8:48 /mi
2nd Half
Distance13.11 mi
Time2:00:39
Pace9:13 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:31:4026:518:3926:51
8:39
-
10K
6.21 mi11:58:5854:098:4327:18
8:48
+0:09
15K
9.32 mi12:26:281:21:398:4627:30
8:52
+0:04
20K
12.43 mi12:54:181:49:298:4927:50
8:58
+0:06
HALF
13.11 mi13:00:081:55:198:485:50
8:34
-0:24
25K
15.53 mi13:21:502:17:018:5021:42
8:57
+0:23
30K
18.64 mi13:49:572:45:088:5228:07
9:03
+0:06
20M
20.00 mi14:02:542:58:058:5512:57
9:33
+0:30
21M
21.00 mi14:13:113:08:228:5910:17
10:17
+0:44
35K
21.75 mi14:19:433:14:548:586:32
8:44
-1:33
23M
23.00 mi14:31:473:26:589:0012:04
9:39
+0:55
24M
24.00 mi14:40:353:35:469:008:48
8:48
-0:51
40K
24.85 mi14:48:213:43:329:007:46
9:06
+0:18
25.2M
25.20 mi14:51:423:46:539:013:21
9:43
+0:37
FINISH
26.22 mi15:00:473:55:589:019:05
8:55
-0:48

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

9:00 /mi

Slowest Pace

10:17 /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

32:41

14% of race

Time at Steady Pace

2:44:38

70% of race

Time at Slower Pace

38:39

16% of race

Average Pace: 9:00 /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 mi11:31:4026:518:3926:51
8:39
#20874
10K
6.21 mi11:58:5854:098:4327:18
8:48
#21405
15K
9.32 mi12:26:281:21:398:4627:30
8:52
#21578
20K
12.43 mi12:54:181:49:298:4927:50
8:58
#21598
HALF
13.11 mi13:00:081:55:198:485:50
8:34
#21548
25K
15.53 mi13:21:502:17:018:5021:42
8:57
#21415
30K
18.64 mi13:49:572:45:088:5228:07
9:03
#21108
20M
20.00 mi14:02:542:58:058:5512:57
9:33
#21097
21M
21.00 mi14:13:113:08:228:5910:17
10:17
#21144
35K
21.75 mi14:19:433:14:548:586:32
8:44
#21067
23M
23.00 mi14:31:473:26:589:0012:04
9:39
#21073
24M
24.00 mi14:40:353:35:469:008:48
8:48
#20969
40K
24.85 mi14:48:213:43:329:007:46
9:06
#20895
25.2M
25.20 mi14:51:423:46:539:013:21
9:43
#20836
FINISH
26.22 mi15:00:473:55:589:019:05
8:55
#20844
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi208748096809621993(Top 76%)8641(Top 69%)8641(Top 151%)
10K6.21 mi3.10 mi21405-5318360-2648360-26421857(Top 75%)8576(Top 68%)8576(Top 150%)
15K9.32 mi3.11 mi21578-1738454-948454-9421993(Top 76%)8641(Top 69%)8641(Top 151%)
20K12.43 mi3.11 mi21598-208461-78461-721753(Top 75%)8535(Top 68%)8535(Top 149%)
HALF13.11 mi0.68 mi21548+508436+258436+2520646(Top 71%)7946(Top 63%)7946(Top 139%)
25K15.53 mi2.42 mi21415+1338377+598377+5920961(Top 72%)8151(Top 65%)8151(Top 143%)
30K18.64 mi3.11 mi21108+3078230+1478230+14719842(Top 68%)7667(Top 61%)7667(Top 134%)
20M20.00 mi1.36 mi21097+118242-128242-1221182(Top 73%)8438(Top 67%)8438(Top 148%)
21M21.00 mi1.00 mi21144-478272-308272-3021347(Top 74%)8555(Top 68%)8555(Top 150%)
35K21.75 mi0.75 mi21067+778234+388234+3818829(Top 65%)7340(Top 58%)7340(Top 128%)
23M23.00 mi1.25 mi21073-68247-138247-1321069(Top 73%)8503(Top 68%)8503(Top 149%)
24M24.00 mi1.00 mi20969+1048209+388209+3818558(Top 64%)7282(Top 58%)7282(Top 127%)
40K24.85 mi0.85 mi20895+748179+308179+3018825(Top 65%)7492(Top 60%)7492(Top 131%)
25.2M25.20 mi0.35 mi20836+598159+208159+2018349(Top 63%)7241(Top 58%)7241(Top 127%)
FINISH26.22 mi1.02 mi20844-88169-108169-1020175(Top 70%)8169(Top 65%)8169(Top 143%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21
+97ft-345ft

Overall

21993

Females

8641

F18-39

8641

5K→10K

3.1 - 6.2 mi

Top 75%
×5
+79ft-138ft

Overall

21857

Females

8576

F18-39

8576

10K→15K

6.2 - 9.3 mi

Top 76%
×3
+67ft-78ft

Overall

21993

Females

8641

F18-39

8641

15K→20K

9.3 - 12.4 mi

Top 75%
×5
+106ft-86ft

Overall

21753

Females

8535

F18-39

8535

20K→HALF

12.4 - 13.1 mi

Top 71%
×2
+19ft-37ft

Overall

20646

Females

7946

F18-39

7946

HALF→25K

13.1 - 15.5 mi

Top 72%
×4
+66ft-88ft

Overall

20961

Females

8151

F18-39

8151

25K→30K

15.5 - 18.6 mi

Top 68%
×9
+181ft-148ft

Overall

19842

Females

7667

F18-39

7667

30K→20M

18.6 - 20.0 mi

Top 73%
×5
+64ft-50ft

Overall

21182

Females

8438

F18-39

8438

20M→21M

20.0 - 21.0 mi

Top 74%
×8
+106ft-24ft

Overall

21347

Females

8555

F18-39

8555

21M→35K

21.0 - 21.8 mi

Top 65%
×7
+17ft-86ft

Overall

18829

Females

7340

F18-39

7340

35K→23M

21.8 - 23.0 mi

Top 73%
×5
+23ft-63ft

Overall

21069

Females

8503

F18-39

8503

23M→24M

23.0 - 24.0 mi

Top 64%
×6
+12ft-82ft

Overall

18558

Females

7282

F18-39

7282

24M→40K

24.0 - 24.9 mi

Top 65%
×1
+6ft-20ft

Overall

18825

Females

7492

F18-39

7492

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1
+13ft-16ft

Overall

18349

Females

7241

F18-39

7241

25.2M→FINISH

25.2 - 26.2 mi

Top 70%
×2
+22ft-21ft

Overall

20175

Females

8169

F18-39

8169

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1591*
Passed By
1045
Net Change
+30
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20874
5K → 10K101200-531#20874#21405
10K → 15K111200-173#21405#21578
15K → 20K157177-20#21578#21598
20K → HALF566+50#21598#21548
HALF → 25K17845+133#21548#21415
25K → 30K345*38+307#21415#21108
30K → 20M8675+11#21108#21097
20M → 21M61108-47#21097#21144
21M → 35K9013+77#21144#21067
35K → 23M8288-6#21067#21073
23M → 24M1139+104#21073#20969
24M → 40K9420+74#20969#20895
40K → 25.2M634+59#20895#20836
25.2M → FINISH5462-8#20836#20844
TOTALS1591*1045+30

* 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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