All Results|Race Analytics|Course|Contact

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Kelsey Lebuffe

Bib: 12279 •F •Age: N/A

MA

Boston Marathon logo
0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 29021
Top 35%
Gender (Female)
#0 / 12578
Top 19%
Age Group (F18-39)
#0 / 5716
Top 34%
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
20:56
3.11 mi
Rank: #6287
Start → 5K
20:56 | 6:45/mi
10K
41:50
6.21 mi
Rank: #6240 (+47)
5K → 10K
20:54 | 6:44/mi
15K
1:02:51
9.32 mi
Rank: #6271 (-31)
10K → 15K
21:01 | 6:46/mi
20K
1:24:58
12.43 mi
Rank: #7018 (-747)
15K → 20K
22:07 | 7:08/mi
HALF
1:29:55
13.11 mi
Rank: #7240 (-222)
20K → HALF
4:57 | 7:16/mi
25K
1:48:03
15.53 mi
Rank: #7834 (-594)
HALF → 25K
18:08 | 7:29/mi
30K
2:13:18
18.64 mi
Rank: #8841 (-1007)
25K → 30K
25:15 | 8:08/mi
20M
2:24:37
20.00 mi
Rank: #9287 (-446)
30K → 20M
11:19 | 8:20/mi
21M
2:33:16
21.00 mi
Rank: #9540 (-253)
20M → 21M
8:39 | 8:39/mi
35K
2:39:16
21.75 mi
Rank: #9679 (-139)
21M → 35K
6:00 | 8:02/mi
23M
2:49:24
23.00 mi
Rank: #9837 (-158)
35K → 23M
10:08 | 8:06/mi
24M
2:57:07
24.00 mi
Rank: #9915 (-78)
23M → 24M
7:43 | 7:43/mi
40K
3:03:58
24.85 mi
Rank: #10018 (-103)
24M → 40K
6:51 | 8:01/mi
25.2M
3:07:04
25.20 mi
Rank: #10073 (-55)
40K → 25.2M
3:06 | 9:00/mi
FINISH
3:15:03
26.22 mi
Rank: #10252 (-179)
25.2M → FINISH
7:59 | 7:51/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:29:55
Pace6:52 /mi
2nd Half
Distance13.11 mi
Time1:45:08
Pace8:02 /mi
📊Positive Split: 16.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:0020:566:4520:56
6:45
-
10K
6.21 mi11:09:5441:506:4420:54
6:44
-0:01
15K
9.32 mi11:30:551:02:516:4521:01
6:46
+0:02
20K
12.43 mi11:53:021:24:586:5122:07
7:08
+0:22
HALF
13.11 mi11:57:591:29:556:524:57
7:16
+0:08
25K
15.53 mi12:16:071:48:036:5818:08
7:29
+0:13
30K
18.64 mi12:41:222:13:187:1025:15
8:08
+0:39
20M
20.00 mi12:52:412:24:377:1411:19
8:20
+0:12
21M
21.00 mi13:01:202:33:167:188:39
8:39
+0:19
35K
21.75 mi13:07:202:39:167:206:00
8:02
-0:37
23M
23.00 mi13:17:282:49:247:2210:08
8:06
+0:04
24M
24.00 mi13:25:112:57:077:237:43
7:43
-0:23
40K
24.85 mi13:32:023:03:587:256:51
8:01
+0:18
25.2M
25.20 mi13:35:083:07:047:263:06
9:00
+0:59
FINISH
26.22 mi13:43:073:15:037:277:59
7:51
-1:09

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

6:44 /mi

Average Pace

7:27 /mi

Slowest Pace

9:00 /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

1:48:03

55% of race

Time at Steady Pace

1:03:56

33% of race

Time at Slower Pace

23:04

12% of race

Average Pace: 7:26 /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 mi10:49:0020:566:4520:56
6:45
#6287
10K
6.21 mi11:09:5441:506:4420:54
6:44
#6240
15K
9.32 mi11:30:551:02:516:4521:01
6:46
#6271
20K
12.43 mi11:53:021:24:586:5122:07
7:08
#7018
HALF
13.11 mi11:57:591:29:556:524:57
7:16
#7240
25K
15.53 mi12:16:071:48:036:5818:08
7:29
#7834
30K
18.64 mi12:41:222:13:187:1025:15
8:08
#8841
20M
20.00 mi12:52:412:24:377:1411:19
8:20
#9287
21M
21.00 mi13:01:202:33:167:188:39
8:39
#9540
35K
21.75 mi13:07:202:39:167:206:00
8:02
#9679
23M
23.00 mi13:17:282:49:247:2210:08
8:06
#9837
24M
24.00 mi13:25:112:57:077:237:43
7:43
#9915
40K
24.85 mi13:32:023:03:587:256:51
8:01
#10018
25.2M
25.20 mi13:35:083:07:047:263:06
9:00
#10073
FINISH
26.22 mi13:43:073:15:037:277:59
7:51
#10252
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 mi62875865866505(Top 22%)679(Top 5%)679(Top 12%)
10K6.21 mi3.10 mi6240+47573+13573+136273(Top 22%)596(Top 5%)596(Top 10%)
15K9.32 mi3.11 mi6271-31583-10583-106505(Top 22%)679(Top 5%)679(Top 12%)
20K12.43 mi3.11 mi7018-747806-223806-2238738(Top 30%)1452(Top 12%)1452(Top 25%)
HALF13.11 mi0.68 mi7240-222870-64870-6410921(Top 38%)2434(Top 19%)2434(Top 43%)
25K15.53 mi2.42 mi7834-5941056-1861056-18611241(Top 39%)2758(Top 22%)2758(Top 48%)
30K18.64 mi3.11 mi8841-10071482-4261482-42614409(Top 50%)4630(Top 37%)4630(Top 81%)
20M20.00 mi1.36 mi9287-4461723-2411723-24115120(Top 52%)5122(Top 41%)5122(Top 90%)
21M21.00 mi1.00 mi9540-2531865-1421865-14214068(Top 48%)4608(Top 37%)4608(Top 81%)
35K21.75 mi0.75 mi9679-1391942-771942-7714626(Top 50%)4963(Top 39%)4963(Top 87%)
23M23.00 mi1.25 mi9837-1582051-1092051-10913126(Top 45%)4225(Top 34%)4225(Top 74%)
24M24.00 mi1.00 mi9915-782116-652116-6511674(Top 40%)3521(Top 28%)3521(Top 62%)
40K24.85 mi0.85 mi10018-1032197-812197-8112575(Top 43%)4090(Top 33%)4090(Top 72%)
25.2M25.20 mi0.35 mi10073-552239-422239-4214651(Top 50%)5220(Top 42%)5220(Top 91%)
FINISH26.22 mi1.02 mi10252-1792353-1142353-11414028(Top 48%)4917(Top 39%)4917(Top 86%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21
+97ft-345ft

Overall

6505

Females

679

F18-39

679

5K→10K

3.1 - 6.2 mi

Top 22%
×5
+79ft-138ft

Overall

6273

Females

596

F18-39

596

10K→15K

6.2 - 9.3 mi

Top 22%
×3
+67ft-78ft

Overall

6505

Females

679

F18-39

679

15K→20K

9.3 - 12.4 mi

Top 30%
×5
+106ft-86ft

Overall

8738

Females

1452

F18-39

1452

20K→HALF

12.4 - 13.1 mi

Top 38%
×2
+19ft-37ft

Overall

10921

Females

2434

F18-39

2434

HALF→25K

13.1 - 15.5 mi

Top 39%
×4
+66ft-88ft

Overall

11241

Females

2758

F18-39

2758

25K→30K

15.5 - 18.6 mi

Top 50%
×9
+181ft-148ft

Overall

14409

Females

4630

F18-39

4630

30K→20M

18.6 - 20.0 mi

Top 52%
×5
+64ft-50ft

Overall

15120

Females

5122

F18-39

5122

20M→21M

20.0 - 21.0 mi

Top 48%
×8
+106ft-24ft

Overall

14068

Females

4608

F18-39

4608

21M→35K

21.0 - 21.8 mi

Top 50%
×7
+17ft-86ft

Overall

14626

Females

4963

F18-39

4963

35K→23M

21.8 - 23.0 mi

Top 45%
×5
+23ft-63ft

Overall

13126

Females

4225

F18-39

4225

23M→24M

23.0 - 24.0 mi

Top 40%
×6
+12ft-82ft

Overall

11674

Females

3521

F18-39

3521

24M→40K

24.0 - 24.9 mi

Top 43%
×1
+6ft-20ft

Overall

12575

Females

4090

F18-39

4090

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1
+13ft-16ft

Overall

14651

Females

5220

F18-39

5220

25.2M→FINISH

25.2 - 26.2 mi

Top 48%
×2
+22ft-21ft

Overall

14028

Females

4917

F18-39

4917

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
739*
Passed By
2450
Net Change
-3965
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6287
5K → 10K219*172+47#6287#6240
10K → 15K124155-31#6240#6271
15K → 20K37200-747#6271#7018
20K → HALF3200-222#7018#7240
HALF → 25K29200-594#7240#7834
25K → 30K22200-1007#7834#8841
30K → 20M29200-446#8841#9287
20M → 21M27200-253#9287#9540
21M → 35K25164-139#9540#9679
35K → 23M68200-158#9679#9837
23M → 24M57134-78#9837#9915
24M → 40K51153-103#9915#10018
40K → 25.2M1872-55#10018#10073
25.2M → FINISH30200-179#10073#10252
TOTALS739*2450-3965

* 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...

Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

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