Boston Marathon logo
BOSTON MARATHON 2024

Kira Larson

Bib: 14859•F

MO

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 25550
Top 37%
Gender (Female)
#0 / 10924
Top 22%
Division (F18-39)
#0 / 4660
Top 38%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:29
Rank: #13731
Start → 5K
24:29 | 7:53/mi
10K· 6.21 mi
49:07
Rank: #13690 (+41)
5K → 10K
24:38 | 7:56/mi
15K· 9.32 mi
1:13:41
Rank: #13343 (+347)
10K → 15K
24:34 | 7:54/mi
20K· 12.43 mi
1:38:11
Rank: #12651 (+692)
15K → 20K
24:30 | 7:53/mi
Half· 13.11 mi
1:43:28
Rank: #12536 (+115)
20K → Half
5:17 | 7:45/mi
25K· 15.53 mi
2:02:45
Rank: #11991 (+545)
Half → 25K
19:17 | 7:57/mi
30K· 18.64 mi
2:28:18
Rank: #11343 (+648)
25K → 30K
25:33 | 8:13/mi
20M
2:39:32
Rank: #11009 (+334)
30K → 20M
11:14 | 8:16/mi
21M
2:48:10
Rank: #10658 (+351)
20M → 21M
8:38 | 8:38/mi
35K· 21.75 mi
2:54:04
Rank: #10500 (+158)
21M → 35K
5:54 | 7:53/mi
23M
3:04:21
Rank: #10220 (+280)
35K → 23M
10:17 | 8:13/mi
24M
3:12:30
Rank: #10058 (+162)
23M → 24M
8:09 | 8:09/mi
40K· 24.85 mi
3:19:24
Rank: #9865 (+193)
24M → 40K
6:54 | 8:04/mi
25.2M
3:22:27
Rank: #9773 (+92)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
3:29:58
Rank: #9555 (+218)
25.2M → Finish
7:31 | 7:23/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:28
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:46:30
Pace8:07 /mi
📊Positive Split: 2.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:3224:297:5324:29
7:53
-
10K
6.21 mi11:22:1049:077:5424:38
7:56
+0:03
15K
9.32 mi11:46:441:13:417:5424:34
7:54
-0:02
20K
12.43 mi12:11:141:38:117:5424:30
7:53
-0:01
Half
13.11 mi12:16:311:43:287:545:17
7:45
-0:08
25K
15.53 mi12:35:482:02:457:5419:17
7:57
+0:12
30K
18.64 mi13:01:212:28:187:5725:33
8:13
+0:16
20M
20.00 mi13:12:352:39:327:5911:14
8:16
+0:03
21M
21.00 mi13:21:132:48:108:008:38
8:38
+0:22
35K
21.75 mi13:27:072:54:048:005:54
7:53
-0:45
23M
23.00 mi13:37:243:04:218:0110:17
8:13
+0:20
24M
24.00 mi13:45:333:12:308:018:09
8:09
-0:04
40K
24.85 mi13:52:273:19:248:016:54
8:04
-0:05
25.2M
25.20 mi13:55:303:22:278:023:03
8:51
+0:47
Finish
26.22 mi14:03:013:29:588:017:31
7:23
-1:28

Checkpoints & Pacing

📈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

7:23 /mi

Average Pace

8:01 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:04

68% of race

Time at Steady Pace

1:03:51

30% of race

Time at Slower Pace

3:03

1% of race

Average Pace: 8:00 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:57:3224:297:5324:29
7:53
#13731
10K
6.21 mi11:22:1049:077:5424:38
7:56
#13690
15K
9.32 mi11:46:441:13:417:5424:34
7:54
#13343
20K
12.43 mi12:11:141:38:117:5424:30
7:53
#12651
Half
13.11 mi12:16:311:43:287:545:17
7:45
#12536
25K
15.53 mi12:35:482:02:457:5419:17
7:57
#11991
30K
18.64 mi13:01:212:28:187:5725:33
8:13
#11343
20M
20.00 mi13:12:352:39:327:5911:14
8:16
#11009
21M
21.00 mi13:21:132:48:108:008:38
8:38
#10658
35K
21.75 mi13:27:072:54:048:005:54
7:53
#10500
23M
23.00 mi13:37:243:04:218:0110:17
8:13
#10220
24M
24.00 mi13:45:333:12:308:018:09
8:09
#10058
40K
24.85 mi13:52:273:19:248:016:54
8:04
#9865
25.2M
25.20 mi13:55:303:22:278:023:03
8:51
#9773
Finish
26.22 mi14:03:013:29:588:017:31
7:23
#9555
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi137314133413312745(Top 50%)3648(Top 33%)3648(Top 78%)
10K6.21 mi3.10 mi13690+414140-74140-713659(Top 53%)4135(Top 38%)4135(Top 89%)
15K9.32 mi3.11 mi13343+3473948+1923948+19212745(Top 50%)3648(Top 33%)3648(Top 78%)
20K12.43 mi3.11 mi12651+6923572+3763572+37611041(Top 43%)2829(Top 26%)2829(Top 61%)
Half13.11 mi0.68 mi12536+1153513+593513+5910942(Top 43%)2762(Top 25%)2762(Top 59%)
25K15.53 mi2.42 mi11991+5453256+2573256+2579900(Top 39%)2433(Top 22%)2433(Top 52%)
30K18.64 mi3.11 mi11343+6483011+2453011+2459150(Top 36%)2289(Top 21%)2289(Top 49%)
20M20.00 mi1.36 mi11009+3342887+1242887+1248208(Top 32%)2092(Top 19%)2092(Top 45%)
21M21.00 mi1.00 mi10658+3512768+1192768+1196867(Top 27%)1658(Top 15%)1658(Top 36%)
35K21.75 mi0.75 mi10500+1582716+522716+527128(Top 28%)1816(Top 17%)1816(Top 39%)
23M23.00 mi1.25 mi10220+2802633+832633+836901(Top 27%)1855(Top 17%)1855(Top 40%)
24M24.00 mi1.00 mi10058+1622597+362597+367499(Top 29%)2246(Top 21%)2246(Top 48%)
40K24.85 mi0.85 mi9865+1932539+582539+586176(Top 24%)1741(Top 16%)1741(Top 37%)
25.2M25.20 mi0.35 mi9773+922518+212518+215912(Top 23%)1687(Top 15%)1687(Top 36%)
Finish26.22 mi1.02 mi9555+2182444+742444+744953(Top 19%)1180(Top 11%)1180(Top 25%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21stories
+97ft-345ft

Overall

12745

Females

3648

F18-39

3648

5K→10K

3.1 - 6.2 mi

Top 53%
×5stories
+79ft-138ft

Overall

13659

Females

4135

F18-39

4135

10K→15K

6.2 - 9.3 mi

Top 50%
×3stories
+67ft-78ft

Overall

12745

Females

3648

F18-39

3648

15K→20K

9.3 - 12.4 mi

Top 43%
×5stories
+106ft-86ft

Overall

11041

Females

2829

F18-39

2829

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

10942

Females

2762

F18-39

2762

Half→25K

13.1 - 15.5 mi

Top 39%
×4stories
+66ft-88ft

Overall

9900

Females

2433

F18-39

2433

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

9150

Females

2289

F18-39

2289

30K→20M

18.6 - 20.0 mi

Top 32%
×5stories
+64ft-50ft

Overall

8208

Females

2092

F18-39

2092

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

6867

Females

1658

F18-39

1658

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7128

Females

1816

F18-39

1816

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

6901

Females

1855

F18-39

1855

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7499

Females

2246

F18-39

2246

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6176

Females

1741

F18-39

1741

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

5912

Females

1687

F18-39

1687

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

4953

Females

1180

F18-39

1180

Passing Analysis

Category:
Athletes Passed
4683*
Passed By
507
Net Change
+4176
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13731
5K → 10K322281+41#13731#13690
10K → 15K42073+347#13690#13343
15K → 20K70210+692#13343#12651
20K → Half1194+115#12651#12536
Half → 25K56318+545#12536#11991
25K → 30K68739+648#11991#11343
30K → 20M35016+334#11343#11009
20M → 21M3598+351#11009#10658
21M → 35K16810+158#10658#10500
35K → 23M29111+280#10500#10220
23M → 24M17917+162#10220#10058
24M → 40K204*11+193#10058#9865
40K → 25.2M986+92#9865#9773
25.2M → Finish2213+218#9773#9555
TOTALS4683*507+4176

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

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

.gpx files up to 10MB

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing