All Results|Race Analytics|Course|Contact

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Karla Calderón

Bib: 15660 •F •Age: N/A

Boston Marathon logo
0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 29021
Top 30%
Gender (Female)
#0 / 12578
Top 13%
Age Group (F18-39)
#0 / 5716
Top 25%
Race Day Weather
51°/41°F
overcast clouds
Unlock Your Full

AI Performance Report

New

Understand What Really Happened During Your Race

Go deeper with personalized analysis powered by your official race data.

Your AI Performance Report includes:
  • Fatigue & pacing analysis
  • Finish time optimization
  • Qualification readiness
  • Segment-by-segment breakdown
  • Personalized race insights
  • Downloadable athlete report
Shareable via link — view it anywhere, share with anyone
AI Report Preview
Generating your preview…
$4.99
One-time purchase for this race
Includes a shareable link

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
22:07
3.11 mi
Rank: #9511
Start → 5K
22:07 | 7:08/mi
10K
44:20
6.21 mi
Rank: #9619 (-108)
5K → 10K
22:13 | 7:10/mi
15K
1:06:42
9.32 mi
Rank: #9740 (-121)
10K → 15K
22:22 | 7:12/mi
20K
1:29:07
12.43 mi
Rank: #9631 (+109)
15K → 20K
22:25 | 7:13/mi
HALF
1:34:00
13.11 mi
Rank: #9652 (-21)
20K → HALF
4:53 | 7:10/mi
25K
1:51:32
15.53 mi
Rank: #9540 (+112)
HALF → 25K
17:32 | 7:14/mi
30K
2:14:44
18.64 mi
Rank: #9473 (+67)
25K → 30K
23:12 | 7:29/mi
20M
2:24:42
20.00 mi
Rank: #9323 (+150)
30K → 20M
9:58 | 7:21/mi
21M
2:32:28
21.00 mi
Rank: #9230 (+93)
20M → 21M
7:46 | 7:46/mi
35K
2:37:42
21.75 mi
Rank: #9117 (+113)
21M → 35K
5:14 | 7:00/mi
23M
2:46:52
23.00 mi
Rank: #8982 (+135)
35K → 23M
9:10 | 7:20/mi
24M
2:54:04
24.00 mi
Rank: #8884 (+98)
23M → 24M
7:12 | 7:12/mi
40K
3:00:21
24.85 mi
Rank: #8797 (+87)
24M → 40K
6:17 | 7:21/mi
25.2M
3:03:07
25.20 mi
Rank: #8772 (+25)
40K → 25.2M
2:46 | 8:02/mi
FINISH
3:10:32
26.22 mi
Rank: #8749 (+23)
25.2M → FINISH
7:25 | 7:17/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:34:00
Pace7:11 /mi
2nd Half
Distance13.11 mi
Time1:36:32
Pace7:22 /mi
📊Positive Split: 2.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:5222:077:0822:07
7:08
-
10K
6.21 mi11:16:0544:207:0922:13
7:10
+0:02
15K
9.32 mi11:38:271:06:427:1022:22
7:12
+0:02
20K
12.43 mi12:00:521:29:077:1122:25
7:13
+0:01
HALF
13.11 mi12:05:451:34:007:114:53
7:10
-0:03
25K
15.53 mi12:23:171:51:327:1117:32
7:14
+0:04
30K
18.64 mi12:46:292:14:447:1423:12
7:29
+0:15
20M
20.00 mi12:56:272:24:427:159:58
7:21
-0:08
21M
21.00 mi13:04:132:32:287:167:46
7:46
+0:25
35K
21.75 mi13:09:272:37:427:165:14
7:00
-0:46
23M
23.00 mi13:18:372:46:527:169:10
7:20
+0:20
24M
24.00 mi13:25:492:54:047:167:12
7:12
-0:08
40K
24.85 mi13:32:063:00:217:166:17
7:21
+0:09
25.2M
25.20 mi13:34:523:03:077:162:46
8:02
+0:41
FINISH
26.22 mi13:42:173:10:327:177:25
7:17
-0:45

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

7:00 /mi

Average Pace

7:16 /mi

Slowest Pace

8:02 /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

3:00:00

94% of race

Time at Steady Pace

10:32

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:16 /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 mi10:53:5222:077:0822:07
7:08
#9511
10K
6.21 mi11:16:0544:207:0922:13
7:10
#9619
15K
9.32 mi11:38:271:06:427:1022:22
7:12
#9740
20K
12.43 mi12:00:521:29:077:1122:25
7:13
#9631
HALF
13.11 mi12:05:451:34:007:114:53
7:10
#9652
25K
15.53 mi12:23:171:51:327:1117:32
7:14
#9540
30K
18.64 mi12:46:292:14:447:1423:12
7:29
#9473
20M
20.00 mi12:56:272:24:427:159:58
7:21
#9323
21M
21.00 mi13:04:132:32:287:167:46
7:46
#9230
35K
21.75 mi13:09:272:37:427:165:14
7:00
#9117
23M
23.00 mi13:18:372:46:527:169:10
7:20
#8982
24M
24.00 mi13:25:492:54:047:167:12
7:12
#8884
40K
24.85 mi13:32:063:00:217:166:17
7:21
#8797
25.2M
25.20 mi13:34:523:03:077:162:46
8:02
#8772
FINISH
26.22 mi13:42:173:10:327:177:25
7:17
#8749
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 mi95111638163810126(Top 35%)2007(Top 16%)2007(Top 35%)
10K6.21 mi3.10 mi9619-1081703-651703-659821(Top 34%)1819(Top 14%)1819(Top 32%)
15K9.32 mi3.11 mi9740-1211783-801783-8010126(Top 35%)2007(Top 16%)2007(Top 35%)
20K12.43 mi3.11 mi9631+1091754+291754+299486(Top 33%)1790(Top 14%)1790(Top 31%)
HALF13.11 mi0.68 mi9652-211768-141768-1410013(Top 35%)1988(Top 16%)1988(Top 35%)
25K15.53 mi2.42 mi9540+1121747+211747+219131(Top 31%)1705(Top 14%)1705(Top 30%)
30K18.64 mi3.11 mi9473+671777-301777-309399(Top 32%)1989(Top 16%)1989(Top 35%)
20M20.00 mi1.36 mi9323+1501736+411736+417966(Top 27%)1463(Top 12%)1463(Top 26%)
21M21.00 mi1.00 mi9230+931720+161720+168277(Top 29%)1715(Top 14%)1715(Top 30%)
35K21.75 mi0.75 mi9117+1131691+291691+297151(Top 25%)1235(Top 10%)1235(Top 22%)
23M23.00 mi1.25 mi8982+1351664+271664+277665(Top 26%)1492(Top 12%)1492(Top 26%)
24M24.00 mi1.00 mi8884+981653+111653+117899(Top 27%)1681(Top 13%)1681(Top 29%)
40K24.85 mi0.85 mi8797+871641+121641+127833(Top 27%)1724(Top 14%)1724(Top 30%)
25.2M25.20 mi0.35 mi8772+251646-51646-58545(Top 29%)2120(Top 17%)2120(Top 37%)
FINISH26.22 mi1.02 mi8749+231659-131659-139723(Top 34%)2699(Top 21%)2699(Top 47%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21
+97ft-345ft

Overall

10126

Females

2007

F18-39

2007

5K→10K

3.1 - 6.2 mi

Top 34%
×5
+79ft-138ft

Overall

9821

Females

1819

F18-39

1819

10K→15K

6.2 - 9.3 mi

Top 35%
×3
+67ft-78ft

Overall

10126

Females

2007

F18-39

2007

15K→20K

9.3 - 12.4 mi

Top 33%
×5
+106ft-86ft

Overall

9486

Females

1790

F18-39

1790

20K→HALF

12.4 - 13.1 mi

Top 35%
×2
+19ft-37ft

Overall

10013

Females

1988

F18-39

1988

HALF→25K

13.1 - 15.5 mi

Top 31%
×4
+66ft-88ft

Overall

9131

Females

1705

F18-39

1705

25K→30K

15.5 - 18.6 mi

Top 32%
×9
+181ft-148ft

Overall

9399

Females

1989

F18-39

1989

30K→20M

18.6 - 20.0 mi

Top 27%
×5
+64ft-50ft

Overall

7966

Females

1463

F18-39

1463

20M→21M

20.0 - 21.0 mi

Top 29%
×8
+106ft-24ft

Overall

8277

Females

1715

F18-39

1715

21M→35K

21.0 - 21.8 mi

Top 25%
×7
+17ft-86ft

Overall

7151

Females

1235

F18-39

1235

35K→23M

21.8 - 23.0 mi

Top 26%
×5
+23ft-63ft

Overall

7665

Females

1492

F18-39

1492

23M→24M

23.0 - 24.0 mi

Top 27%
×6
+12ft-82ft

Overall

7899

Females

1681

F18-39

1681

24M→40K

24.0 - 24.9 mi

Top 27%
×1
+6ft-20ft

Overall

7833

Females

1724

F18-39

1724

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1
+13ft-16ft

Overall

8545

Females

2120

F18-39

2120

25.2M→FINISH

25.2 - 26.2 mi

Top 34%
×2
+22ft-21ft

Overall

9723

Females

2699

F18-39

2699

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1802*
Passed By
908
Net Change
+762
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9511
5K → 10K185200-108#9511#9619
10K → 15K118200-121#9619#9740
15K → 20K204*95+109#9740#9631
20K → HALF1839-21#9631#9652
HALF → 25K16250+112#9652#9540
25K → 30K190123+67#9540#9473
30K → 20M17020+150#9473#9323
20M → 21M14047+93#9323#9230
21M → 35K1196+113#9230#9117
35K → 23M15318+135#9117#8982
23M → 24M12527+98#8982#8884
24M → 40K10720+87#8884#8797
40K → 25.2M3914+25#8797#8772
25.2M → FINISH7249+23#8772#8749
TOTALS1802*908+762

* 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

Loading...

🎨Heatmap Timeline

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Activity Data

Upload your GPX file to see detailed activity metrics

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export & Support

Download your data, get help, and share your feedback

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback