Boston Marathon logo
BOSTON MARATHON 2024

Karolina Sztanderska

Bib: 16342•F

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
24:27
Rank: #13649
Start → 5K
24:27 | 7:52/mi
10K· 6.21 mi
49:12
Rank: #13799 (-150)
5K → 10K
24:45 | 7:58/mi
15K· 9.32 mi
1:15:10
Rank: #14479 (-680)
10K → 15K
25:58 | 8:21/mi
20K· 12.43 mi
1:40:34
Rank: #14017 (+462)
15K → 20K
25:24 | 8:11/mi
Half· 13.11 mi
1:45:50
Rank: #13838 (+179)
20K → Half
5:16 | 7:43/mi
25K· 15.53 mi
2:05:53
Rank: #13444 (+394)
Half → 25K
20:03 | 8:16/mi
30K· 18.64 mi
2:32:46
Rank: #12933 (+511)
25K → 30K
26:53 | 8:39/mi
20M
2:44:27
Rank: #12647 (+286)
30K → 20M
11:41 | 8:36/mi
21M
2:53:30
Rank: #12371 (+276)
20M → 21M
9:03 | 9:03/mi
35K· 21.75 mi
2:59:47
Rank: #12258 (+113)
21M → 35K
6:17 | 8:24/mi
23M
3:10:14
Rank: #11930 (+328)
35K → 23M
10:27 | 8:21/mi
24M
3:18:26
Rank: #11707 (+223)
23M → 24M
8:12 | 8:12/mi
40K· 24.85 mi
3:25:32
Rank: #11455 (+252)
24M → 40K
7:06 | 8:18/mi
25.2M
3:28:41
Rank: #11342 (+113)
40K → 25.2M
3:09 | 9:08/mi
Finish· 26.22 mi
3:36:43
Rank: #11164 (+178)
25.2M → Finish
8:02 | 7:53/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
Time1:45:50
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time1:50:53
Pace8:28 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:4824:277:5224:27
7:52
-
10K
6.21 mi11:48:3349:127:5524:45
7:58
+0:06
15K
9.32 mi12:14:311:15:108:0425:58
8:21
+0:23
20K
12.43 mi12:39:551:40:348:0625:24
8:11
-0:10
Half
13.11 mi12:45:111:45:508:045:16
7:43
-0:28
25K
15.53 mi13:05:142:05:538:0620:03
8:16
+0:33
30K
18.64 mi13:32:072:32:468:1226:53
8:39
+0:23
20M
20.00 mi13:43:482:44:278:1311:41
8:36
-0:03
21M
21.00 mi13:52:512:53:308:169:03
9:03
+0:27
35K
21.75 mi13:59:082:59:478:166:17
8:24
-0:39
23M
23.00 mi14:09:353:10:148:1610:27
8:21
-0:03
24M
24.00 mi14:17:473:18:268:168:12
8:12
-0:09
40K
24.85 mi14:24:533:25:328:167:06
8:18
+0:06
25.2M
25.20 mi14:28:023:28:418:173:09
9:08
+0:50
Finish
26.22 mi14:36:043:36:438:168:02
7:53
-1:15

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

7:43 /mi

Average Pace

8:16 /mi

Slowest Pace

9:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:57

77% of race

Time at Steady Pace

47:37

22% of race

Time at Slower Pace

3:09

1% 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 mi11:23:4824:277:5224:27
7:52
#13649
10K
6.21 mi11:48:3349:127:5524:45
7:58
#13799
15K
9.32 mi12:14:311:15:108:0425:58
8:21
#14479
20K
12.43 mi12:39:551:40:348:0625:24
8:11
#14017
Half
13.11 mi12:45:111:45:508:045:16
7:43
#13838
25K
15.53 mi13:05:142:05:538:0620:03
8:16
#13444
30K
18.64 mi13:32:072:32:468:1226:53
8:39
#12933
20M
20.00 mi13:43:482:44:278:1311:41
8:36
#12647
21M
21.00 mi13:52:512:53:308:169:03
9:03
#12371
35K
21.75 mi13:59:082:59:478:166:17
8:24
#12258
23M
23.00 mi14:09:353:10:148:1610:27
8:21
#11930
24M
24.00 mi14:17:473:18:268:168:12
8:12
#11707
40K
24.85 mi14:24:533:25:328:167:06
8:18
#11455
25.2M
25.20 mi14:28:023:28:418:173:09
9:08
#11342
Finish
26.22 mi14:36:043:36:438:168:02
7:53
#11164
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi136494086408615600(Top 61%)5320(Top 49%)5320(Top 114%)
10K6.21 mi3.10 mi13799-1504210-1244210-12413946(Top 55%)4318(Top 40%)4318(Top 93%)
15K9.32 mi3.11 mi14479-6804617-4074617-40715600(Top 61%)5320(Top 49%)5320(Top 114%)
20K12.43 mi3.11 mi14017+4624373+2444373+24412982(Top 51%)3838(Top 35%)3838(Top 82%)
Half13.11 mi0.68 mi13838+1794266+1074266+10710816(Top 42%)2713(Top 25%)2713(Top 58%)
25K15.53 mi2.42 mi13444+3944057+2094057+20911805(Top 46%)3402(Top 31%)3402(Top 73%)
30K18.64 mi3.11 mi12933+5113873+1843873+18411458(Top 45%)3424(Top 31%)3424(Top 73%)
20M20.00 mi1.36 mi12647+2863768+1053768+10510001(Top 39%)2953(Top 27%)2953(Top 63%)
21M21.00 mi1.00 mi12371+2763675+933675+938846(Top 35%)2613(Top 24%)2613(Top 56%)
35K21.75 mi0.75 mi12258+1133654+213654+2110169(Top 40%)3320(Top 30%)3320(Top 71%)
23M23.00 mi1.25 mi11930+3283534+1203534+1207639(Top 30%)2217(Top 20%)2217(Top 48%)
24M24.00 mi1.00 mi11707+2233465+693465+697795(Top 31%)2386(Top 22%)2386(Top 51%)
40K24.85 mi0.85 mi11455+2523372+933372+937404(Top 29%)2345(Top 21%)2345(Top 50%)
25.2M25.20 mi0.35 mi11342+1133338+343338+347264(Top 28%)2331(Top 21%)2331(Top 50%)
Finish26.22 mi1.02 mi11164+1783289+493289+497866(Top 31%)2508(Top 23%)2508(Top 54%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

15600

Females

5320

F18-39

5320

5K→10K

3.1 - 6.2 mi

Top 55%
×5stories
+79ft-138ft

Overall

13946

Females

4318

F18-39

4318

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

15600

Females

5320

F18-39

5320

15K→20K

9.3 - 12.4 mi

Top 51%
×5stories
+106ft-86ft

Overall

12982

Females

3838

F18-39

3838

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

10816

Females

2713

F18-39

2713

Half→25K

13.1 - 15.5 mi

Top 46%
×4stories
+66ft-88ft

Overall

11805

Females

3402

F18-39

3402

25K→30K

15.5 - 18.6 mi

Top 45%
×9stories
+181ft-148ft

Overall

11458

Females

3424

F18-39

3424

30K→20M

18.6 - 20.0 mi

Top 39%
×5stories
+64ft-50ft

Overall

10001

Females

2953

F18-39

2953

20M→21M

20.0 - 21.0 mi

Top 35%
×8stories
+106ft-24ft

Overall

8846

Females

2613

F18-39

2613

21M→35K

21.0 - 21.8 mi

Top 40%
×7stories
+17ft-86ft

Overall

10169

Females

3320

F18-39

3320

35K→23M

21.8 - 23.0 mi

Top 30%
×5stories
+23ft-63ft

Overall

7639

Females

2217

F18-39

2217

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

7795

Females

2386

F18-39

2386

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7404

Females

2345

F18-39

2345

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7264

Females

2331

F18-39

2331

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

7866

Females

2508

F18-39

2508

Passing Analysis

Category:
Athletes Passed
3872
Passed By
1387
Net Change
+2485
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13649
5K → 10K239389-150#13649#13799
10K → 15K83763-680#13799#14479
15K → 20K49937+462#14479#14017
20K → Half1801+179#14017#13838
Half → 25K43036+394#13838#13444
25K → 30K58372+511#13444#12933
30K → 20M29913+286#12933#12647
20M → 21M29317+276#12647#12371
21M → 35K13825+113#12371#12258
35K → 23M3335+328#12258#11930
23M → 24M2296+223#11930#11707
24M → 40K2575+252#11707#11455
40K → 25.2M1163+113#11455#11342
25.2M → Finish19315+178#11342#11164
TOTALS38721387+2485
📊

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