Boston Marathon logo
BOSTON MARATHON 2024

Kathryn Maslanka

Bib: 16799•F

MB

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 25550
Top 44%
Gender (Female)
#0 / 10924
Top 30%
Division (F18-39)
#0 / 4660
Top 47%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:27
Rank: #17843
Start → 5K
26:27 | 8:31/mi
10K· 6.21 mi
52:28
Rank: #17173 (+670)
5K → 10K
26:01 | 8:22/mi
15K· 9.32 mi
1:18:24
Rank: #16564 (+609)
10K → 15K
25:56 | 8:21/mi
20K· 12.43 mi
1:45:05
Rank: #16165 (+399)
15K → 20K
26:41 | 8:35/mi
Half· 13.11 mi
1:50:50
Rank: #16108 (+57)
20K → Half
5:45 | 8:26/mi
25K· 15.53 mi
2:10:48
Rank: #15318 (+790)
Half → 25K
19:58 | 8:14/mi
30K· 18.64 mi
2:36:43
Rank: #14249 (+1069)
25K → 30K
25:55 | 8:21/mi
20M
2:47:46
Rank: #13705 (+544)
30K → 20M
11:03 | 8:08/mi
21M
2:56:10
Rank: #13151 (+554)
20M → 21M
8:24 | 8:24/mi
35K· 21.75 mi
3:02:15
Rank: #12928 (+223)
21M → 35K
6:05 | 8:08/mi
23M
3:12:10
Rank: #12441 (+487)
35K → 23M
9:55 | 7:55/mi
24M
3:19:58
Rank: #12079 (+362)
23M → 24M
7:48 | 7:48/mi
40K· 24.85 mi
3:26:37
Rank: #11753 (+326)
24M → 40K
6:39 | 7:47/mi
25.2M
3:29:27
Rank: #11557 (+196)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:36:48
Rank: #11190 (+367)
25.2M → Finish
7:21 | 7:13/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 Half
Distance13.11 mi
Time1:50:50
Pace8:27 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:45:58
Pace8:05 /mi
📊Negative Split: 4.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:4526:278:3126:27
8:31
-
10K
6.21 mi11:42:4652:288:2726:01
8:22
-0:09
15K
9.32 mi12:08:421:18:248:2525:56
8:21
-0:01
20K
12.43 mi12:35:231:45:058:2726:41
8:35
+0:14
Half
13.11 mi12:41:081:50:508:275:45
8:26
-0:09
25K
15.53 mi13:01:062:10:488:2519:58
8:14
-0:12
30K
18.64 mi13:27:012:36:438:2425:55
8:21
+0:07
20M
20.00 mi13:38:042:47:468:2311:03
8:08
-0:13
21M
21.00 mi13:46:282:56:108:238:24
8:24
+0:16
35K
21.75 mi13:52:333:02:158:236:05
8:08
-0:16
23M
23.00 mi14:02:283:12:108:219:55
7:55
-0:13
24M
24.00 mi14:10:163:19:588:207:48
7:48
-0:07
40K
24.85 mi14:16:553:26:378:196:39
7:47
-0:01
25.2M
25.20 mi14:19:453:29:278:192:50
8:13
+0:26
Finish
26.22 mi14:27:063:36:488:167:21
7:13
-1:00

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

7:13 /mi

Average Pace

8:16 /mi

Slowest Pace

8:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

31:43

15% of race

Time at Steady Pace

2:11:57

61% of race

Time at Slower Pace

53:08

25% of race

Average Pace: 8:16 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:16:4526:278:3126:27
8:31
#17843
10K
6.21 mi11:42:4652:288:2726:01
8:22
#17173
15K
9.32 mi12:08:421:18:248:2525:56
8:21
#16564
20K
12.43 mi12:35:231:45:058:2726:41
8:35
#16165
Half
13.11 mi12:41:081:50:508:275:45
8:26
#16108
25K
15.53 mi13:01:062:10:488:2519:58
8:14
#15318
30K
18.64 mi13:27:012:36:438:2425:55
8:21
#14249
20M
20.00 mi13:38:042:47:468:2311:03
8:08
#13705
21M
21.00 mi13:46:282:56:108:238:24
8:24
#13151
35K
21.75 mi13:52:333:02:158:236:05
8:08
#12928
23M
23.00 mi14:02:283:12:108:219:55
7:55
#12441
24M
24.00 mi14:10:163:19:588:207:48
7:48
#12079
40K
24.85 mi14:16:553:26:378:196:39
7:47
#11753
25.2M
25.20 mi14:19:453:29:278:192:50
8:13
#11557
Finish
26.22 mi14:27:063:36:488:167:21
7:13
#11190
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi178436658665815538(Top 61%)5279(Top 48%)5279(Top 113%)
10K6.21 mi3.10 mi17173+6706251+4076251+40716555(Top 65%)5855(Top 54%)5855(Top 126%)
15K9.32 mi3.11 mi16564+6095886+3655886+36515538(Top 61%)5279(Top 48%)5279(Top 113%)
20K12.43 mi3.11 mi16165+3995670+2165670+21615268(Top 60%)5164(Top 47%)5164(Top 111%)
Half13.11 mi0.68 mi16108+575647+235647+2315306(Top 60%)5205(Top 48%)5205(Top 112%)
25K15.53 mi2.42 mi15318+7905192+4555192+45511585(Top 45%)3279(Top 30%)3279(Top 70%)
30K18.64 mi3.11 mi14249+10694629+5634629+5639796(Top 38%)2606(Top 24%)2606(Top 56%)
20M20.00 mi1.36 mi13705+5444370+2594370+2597495(Top 29%)1769(Top 16%)1769(Top 38%)
21M21.00 mi1.00 mi13151+5544128+2424128+2425807(Top 23%)1225(Top 11%)1225(Top 26%)
35K21.75 mi0.75 mi12928+2234028+1004028+1008629(Top 34%)2532(Top 23%)2532(Top 54%)
23M23.00 mi1.25 mi12441+4873816+2123816+2125395(Top 21%)1187(Top 11%)1187(Top 25%)
24M24.00 mi1.00 mi12079+3623668+1483668+1485601(Top 22%)1362(Top 12%)1362(Top 29%)
40K24.85 mi0.85 mi11753+3263534+1343534+1344711(Top 18%)1086(Top 10%)1086(Top 23%)
25.2M25.20 mi0.35 mi11557+1963445+893445+893510(Top 14%)655(Top 6%)655(Top 14%)
Finish26.22 mi1.02 mi11190+3673307+1383307+1384108(Top 16%)833(Top 8%)833(Top 18%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

15538

Females

5279

F18-39

5279

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

16555

Females

5855

F18-39

5855

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

15538

Females

5279

F18-39

5279

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

15268

Females

5164

F18-39

5164

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

15306

Females

5205

F18-39

5205

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

11585

Females

3279

F18-39

3279

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

9796

Females

2606

F18-39

2606

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

7495

Females

1769

F18-39

1769

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

5807

Females

1225

F18-39

1225

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

8629

Females

2532

F18-39

2532

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5395

Females

1187

F18-39

1187

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

5601

Females

1362

F18-39

1362

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4711

Females

1086

F18-39

1086

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3510

Females

655

F18-39

655

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4108

Females

833

F18-39

833

Passing Analysis

Category:
Athletes Passed
6848
Passed By
195
Net Change
+6653
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17843
5K → 10K74373+670#17843#17173
10K → 15K62718+609#17173#16564
15K → 20K48283+399#16564#16165
20K → Half6811+57#16165#16108
Half → 25K7900+790#16108#15318
25K → 30K10701+1069#15318#14249
30K → 20M5440+544#14249#13705
20M → 21M5551+554#13705#13151
21M → 35K2263+223#13151#12928
35K → 23M4870+487#12928#12441
23M → 24M3620+362#12441#12079
24M → 40K3293+326#12079#11753
40K → 25.2M1960+196#11753#11557
25.2M → Finish3692+367#11557#11190
TOTALS6848195+6653
📊

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