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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Katherine Shirriff

Bib: 10424 •F •Age: N/A

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0:00
0:00
/ mi
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Overall
#0 / 29021
Top 27%
Gender (Female)
#0 / 12578
Top 10%
Age Group (F18-39)
#0 / 5716
Top 18%
Race Day Weather
51°/41°F
overcast clouds
Personalized for Katherine

Your Race Performance Report is ready

See how your race unfolded, where your performance changed, and what to focus on next.

Personalized by MyRace AI
Preview insight
Your pace by distance
Fastest segment · 6:26/mi at mile 26.2

Your report includes

  • Race Overview
  • Pacing & Splits
  • Performance Analysis
  • Segment Analysis
  • Passing Analysis
  • Improvement Opportunities
One-time purchase · Instant access · Downloadable PDF · Shareable report

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
21:38
3.11 mi
Rank: #8272
Start → 5K
21:38 | 6:58/mi
10K
43:36
6.21 mi
Rank: #8717 (-445)
5K → 10K
21:58 | 7:05/mi
15K
1:05:55
9.32 mi
Rank: #9082 (-365)
10K → 15K
22:19 | 7:11/mi
20K
1:28:19
12.43 mi
Rank: #9141 (-59)
15K → 20K
22:24 | 7:13/mi
HALF
1:33:09
13.11 mi
Rank: #9147 (-6)
20K → HALF
4:50 | 7:06/mi
25K
1:50:37
15.53 mi
Rank: #9073 (+74)
HALF → 25K
17:28 | 7:13/mi
30K
2:13:19
18.64 mi
Rank: #8846 (+227)
25K → 30K
22:42 | 7:19/mi
20M
2:23:11
20.00 mi
Rank: #8681 (+165)
30K → 20M
9:52 | 7:16/mi
21M
2:30:47
21.00 mi
Rank: #8557 (+124)
20M → 21M
7:36 | 7:36/mi
35K
2:36:07
21.75 mi
Rank: #8483 (+74)
21M → 35K
5:20 | 7:08/mi
23M
2:45:01
23.00 mi
Rank: #8307 (+176)
35K → 23M
8:54 | 7:08/mi
24M
2:51:56
24.00 mi
Rank: #8167 (+140)
23M → 24M
6:55 | 6:55/mi
40K
2:57:53
24.85 mi
Rank: #8003 (+164)
24M → 40K
5:57 | 6:58/mi
25.2M
3:00:29
25.20 mi
Rank: #7927 (+76)
40K → 25.2M
2:36 | 7:33/mi
FINISH
3:07:02
26.22 mi
Rank: #7698 (+229)
25.2M → FINISH
6:33 | 6:26/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half⚖️ Balanced
via HALF
Distance13.11 mi
Time1:33:09
Pace7:07 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:33:53
Pace7:10 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:38:3521:386:5821:38
6:58
-
10K
6.21 mi11:00:3343:367:0221:58
7:05
+0:07
15K
9.32 mi11:22:521:05:557:0522:19
7:11
+0:06
20K
12.43 mi11:45:161:28:197:0722:24
7:13
+0:02
HALF
13.11 mi11:50:061:33:097:074:50
7:06
-0:07
25K
15.53 mi12:07:341:50:377:0817:28
7:13
+0:07
30K
18.64 mi12:30:162:13:197:1022:42
7:19
+0:06
20M
20.00 mi12:40:082:23:117:109:52
7:16
-0:03
21M
21.00 mi12:47:442:30:477:117:36
7:36
+0:20
35K
21.75 mi12:53:032:36:077:115:20
7:08
-0:28
23M
23.00 mi13:01:582:45:017:118:54
7:08
0:00
24M
24.00 mi13:08:532:51:567:106:55
6:55
-0:13
40K
24.85 mi13:14:502:57:537:105:57
6:58
+0:03
25.2M
25.20 mi13:17:263:00:297:102:36
7:33
+0:35
FINISH
26.22 mi13:23:593:07:027:096:33
6:26
-1:07

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

6:26 /mi

Average Pace

7:08 /mi

Slowest Pace

7:36 /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

41:03

22% of race

Time at Steady Pace

2:18:23

74% of race

Time at Slower Pace

7:36

4% of race

Average Pace: 7:08 /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 mi10:38:3521:386:5821:38
6:58
#8272
10K
6.21 mi11:00:3343:367:0221:58
7:05
#8717
15K
9.32 mi11:22:521:05:557:0522:19
7:11
#9082
20K
12.43 mi11:45:161:28:197:0722:24
7:13
#9141
HALF
13.11 mi11:50:061:33:097:074:50
7:06
#9147
25K
15.53 mi12:07:341:50:377:0817:28
7:13
#9073
30K
18.64 mi12:30:162:13:197:1022:42
7:19
#8846
20M
20.00 mi12:40:082:23:117:109:52
7:16
#8681
21M
21.00 mi12:47:442:30:477:117:36
7:36
#8557
35K
21.75 mi12:53:032:36:077:115:20
7:08
#8483
23M
23.00 mi13:01:582:45:017:118:54
7:08
#8307
24M
24.00 mi13:08:532:51:567:106:55
6:55
#8167
40K
24.85 mi13:14:502:57:537:105:57
6:58
#8003
25.2M
25.20 mi13:17:263:00:297:102:36
7:33
#7927
FINISH
26.22 mi13:23:593:07:027:096:33
6:26
#7698
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

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 mi8272116111619980(Top 34%)1931(Top 15%)1931(Top 34%)
10K6.21 mi3.10 mi8717-4451350-1891350-1899211(Top 32%)1551(Top 12%)1551(Top 27%)
15K9.32 mi3.11 mi9082-3651491-1411491-1419980(Top 34%)1931(Top 15%)1931(Top 34%)
20K12.43 mi3.11 mi9141-591538-471538-479436(Top 33%)1762(Top 14%)1762(Top 31%)
HALF13.11 mi0.68 mi9147-61542-41542-49388(Top 32%)1668(Top 13%)1668(Top 29%)
25K15.53 mi2.42 mi9073+741535+71535+78898(Top 31%)1604(Top 13%)1604(Top 28%)
30K18.64 mi3.11 mi8846+2271484+511484+518152(Top 28%)1430(Top 11%)1430(Top 25%)
20M20.00 mi1.36 mi8681+1651452+321452+327421(Top 26%)1237(Top 10%)1237(Top 22%)
21M21.00 mi1.00 mi8557+1241427+251427+257182(Top 25%)1274(Top 10%)1274(Top 22%)
35K21.75 mi0.75 mi8483+741416+111416+117978(Top 27%)1566(Top 12%)1566(Top 27%)
23M23.00 mi1.25 mi8307+1761366+501366+506260(Top 22%)982(Top 8%)982(Top 17%)
24M24.00 mi1.00 mi8167+1401341+251341+255947(Top 20%)947(Top 8%)947(Top 17%)
40K24.85 mi0.85 mi8003+1641298+431298+435302(Top 18%)794(Top 6%)794(Top 14%)
25.2M25.20 mi0.35 mi7927+761274+241274+245585(Top 19%)929(Top 7%)929(Top 16%)
FINISH26.22 mi1.02 mi7698+2291209+651209+653765(Top 13%)469(Top 4%)469(Top 8%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21
+97ft-345ft

Overall

9980

Females

1931

F18-39

1931

5K→10K

3.1 - 6.2 mi

Top 32%
×5
+79ft-138ft

Overall

9211

Females

1551

F18-39

1551

10K→15K

6.2 - 9.3 mi

Top 34%
×3
+67ft-78ft

Overall

9980

Females

1931

F18-39

1931

15K→20K

9.3 - 12.4 mi

Top 33%
×5
+106ft-86ft

Overall

9436

Females

1762

F18-39

1762

20K→HALF

12.4 - 13.1 mi

Top 32%
×2
+19ft-37ft

Overall

9388

Females

1668

F18-39

1668

HALF→25K

13.1 - 15.5 mi

Top 31%
×4
+66ft-88ft

Overall

8898

Females

1604

F18-39

1604

25K→30K

15.5 - 18.6 mi

Top 28%
×9
+181ft-148ft

Overall

8152

Females

1430

F18-39

1430

30K→20M

18.6 - 20.0 mi

Top 26%
×5
+64ft-50ft

Overall

7421

Females

1237

F18-39

1237

20M→21M

20.0 - 21.0 mi

Top 25%
×8
+106ft-24ft

Overall

7182

Females

1274

F18-39

1274

21M→35K

21.0 - 21.8 mi

Top 27%
×7
+17ft-86ft

Overall

7978

Females

1566

F18-39

1566

35K→23M

21.8 - 23.0 mi

Top 22%
×5
+23ft-63ft

Overall

6260

Females

982

F18-39

982

23M→24M

23.0 - 24.0 mi

Top 20%
×6
+12ft-82ft

Overall

5947

Females

947

F18-39

947

24M→40K

24.0 - 24.9 mi

Top 18%
×1
+6ft-20ft

Overall

5302

Females

794

F18-39

794

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1
+13ft-16ft

Overall

5585

Females

929

F18-39

929

25.2M→FINISH

25.2 - 26.2 mi

Top 13%
×2
+22ft-21ft

Overall

3765

Females

469

F18-39

469

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1909*
Passed By
792
Net Change
+574
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8272
5K → 10K89200-445#8272#8717
10K → 15K44200-365#8717#9082
15K → 20K109168-59#9082#9141
20K → HALF2430-6#9141#9147
HALF → 25K14268+74#9147#9073
25K → 30K276*49+227#9073#8846
30K → 20M18116+165#8846#8681
20M → 21M14723+124#8681#8557
21M → 35K8915+74#8557#8483
35K → 23M1815+176#8483#8307
23M → 24M1499+140#8307#8167
24M → 40K1695+164#8167#8003
40K → 25.2M793+76#8003#7927
25.2M → FINISH230*1+229#7927#7698
TOTALS1909*792+574

* 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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Activity Data

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