Boston Marathon logo
BOSTON MARATHON 2023

Aziza Karim

Bib: 15653•F

CA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:20
Rank: #23648
Start → 5K
10:05/mi
31:20 split
10K· 6.21 mi
1:02:43
Rank: #23835 (-187)
5K → 10K
10:06/mi
31:23 split
15K· 9.32 mi
1:32:44
Rank: #23495 (+340)
10K → 15K
9:40/mi
30:01 split
20K· 12.43 mi
2:02:37
Rank: #23115 (+380)
15K → 20K
9:37/mi
29:53 split
Half· 13.11 mi
2:09:01
Rank: #23041 (+74)
20K → Half
9:23/mi
6:24 split
25K· 15.53 mi
2:34:01
Rank: #22985 (+56)
Half → 25K
10:19/mi
25:00 split
30K· 18.64 mi
3:05:31
Rank: #22702 (+283)
25K → 30K
10:08/mi
31:30 split
20M
3:19:00
Rank: #22513 (+189)
30K → 20M
9:55/mi
13:29 split
21M
3:30:56
Rank: #22531 (-18)
20M → 21M
11:56/mi
11:56 split
35K· 21.75 mi
3:38:07
Rank: #22442 (+89)
21M → 35K
9:36/mi
7:11 split
23M
3:51:28
Rank: #22397 (+45)
35K → 23M
10:40/mi
13:21 split
24M
4:01:53
Rank: #22381 (+16)
23M → 24M
10:25/mi
10:25 split
40K· 24.85 mi
4:11:29
Rank: #22391 (-10)
24M → 40K
11:14/mi
9:36 split
25.2M
4:15:06
Rank: #22347 (+44)
40K → 25.2M
10:29/mi
3:37 split
Finish· 26.22 mi
4:24:28
Rank: #22262 (+85)
25.2M → Finish
9:11/mi
9:22 split

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
Time2:09:01
Pace9:50 /mi
2nd Half
Distance13.11 mi
Time2:15:27
Pace10:20 /mi
📊Positive Split: 5.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:01:2331:2010:0531:20
10:05
-
10K
6.21 mi11:32:461:02:4310:0631:23
10:06
+0:01
15K
9.32 mi12:02:471:32:449:5730:01
9:40
-0:26
20K
12.43 mi12:32:402:02:379:5229:53
9:37
-0:03
Half
13.11 mi12:39:042:09:019:506:24
9:23
-0:14
25K
15.53 mi13:04:042:34:019:5525:00
10:19
+0:56
30K
18.64 mi13:35:343:05:319:5731:30
10:08
-0:11
20M
20.00 mi13:49:033:19:009:5713:29
9:55
-0:13
21M
21.00 mi14:00:593:30:5610:0311:56
11:56
+2:01
35K
21.75 mi14:08:103:38:0710:027:11
9:36
-2:20
23M
23.00 mi14:21:313:51:2810:0413:21
10:40
+1:04
24M
24.00 mi14:31:564:01:5310:0510:25
10:25
-0:15
40K
24.85 mi14:41:324:11:2910:079:36
11:14
+0:49
25.2M
25.20 mi14:45:094:15:0610:073:37
10:29
-0:45
Finish
26.22 mi14:54:314:24:2810:069:22
9:11
-1:18

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

9:11 /mi

Average Pace

10:06 /mi

Slowest Pace

11:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:51

31% of race

Time at Steady Pace

2:23:07

54% of race

Time at Slower Pace

38:30

15% of race

Average Pace: 10:05 /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 mi11:01:2331:2010:0531:20
10:05
#23648
10K
6.21 mi11:32:461:02:4310:0631:23
10:06
#23835
15K
9.32 mi12:02:471:32:449:5730:01
9:40
#23495
20K
12.43 mi12:32:402:02:379:5229:53
9:37
#23115
Half
13.11 mi12:39:042:09:019:506:24
9:23
#23041
25K
15.53 mi13:04:042:34:019:5525:00
10:19
#22985
30K
18.64 mi13:35:343:05:319:5731:30
10:08
#22702
20M
20.00 mi13:49:033:19:009:5713:29
9:55
#22513
21M
21.00 mi14:00:593:30:5610:0311:56
11:56
#22531
35K
21.75 mi14:08:103:38:0710:027:11
9:36
#22442
23M
23.00 mi14:21:313:51:2810:0413:21
10:40
#22397
24M
24.00 mi14:31:564:01:5310:0510:25
10:25
#22381
40K
24.85 mi14:41:324:11:2910:079:36
11:14
#22391
25.2M
25.20 mi14:45:094:15:0610:073:37
10:29
#22347
Finish
26.22 mi14:54:314:24:2810:069:22
9:11
#22262
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi236489725972522703(Top 85%)9186(Top 80%)9186(Top 188%)
10K6.21 mi3.10 mi23835-1879801-769801-7623912(Top 90%)9837(Top 86%)9837(Top 201%)
15K9.32 mi3.11 mi23495+3409606+1959606+19522703(Top 85%)9186(Top 80%)9186(Top 188%)
20K12.43 mi3.11 mi23115+3809412+1949412+19421916(Top 82%)8751(Top 77%)8751(Top 179%)
Half13.11 mi0.68 mi23041+749368+449368+4421794(Top 82%)8690(Top 76%)8690(Top 178%)
25K15.53 mi2.42 mi22985+569353+159353+1522867(Top 86%)9309(Top 81%)9309(Top 191%)
30K18.64 mi3.11 mi22702+2839235+1189235+11821393(Top 80%)8573(Top 75%)8573(Top 176%)
20M20.00 mi1.36 mi22513+1899145+909145+9020266(Top 76%)8011(Top 70%)8011(Top 164%)
21M21.00 mi1.00 mi22531-189155-109155-1022656(Top 85%)9363(Top 82%)9363(Top 192%)
35K21.75 mi0.75 mi22442+899113+429113+4220197(Top 76%)8054(Top 71%)8054(Top 165%)
23M23.00 mi1.25 mi22397+459094+199094+1921688(Top 81%)8901(Top 78%)8901(Top 182%)
24M24.00 mi1.00 mi22381+169092+29092+221856(Top 82%)9027(Top 79%)9027(Top 185%)
40K24.85 mi0.85 mi22391-109110-189110-1822787(Top 86%)9545(Top 84%)9545(Top 195%)
25.2M25.20 mi0.35 mi22347+449085+259085+2519135(Top 72%)7596(Top 66%)7596(Top 156%)
Finish26.22 mi1.02 mi22262+859045+409045+4018916(Top 71%)7409(Top 65%)7409(Top 152%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21story building
+97ft-345ft

Overall

22703

Females

9186

F18-39

9186

5K→10K

3.1 - 6.2 mi

Top 90%
×5story building
+79ft-138ft

Overall

23912

Females

9837

F18-39

9837

10K→15K

6.2 - 9.3 mi

Top 85%
×3story building
+67ft-78ft

Overall

22703

Females

9186

F18-39

9186

15K→20K

9.3 - 12.4 mi

Top 82%
×5story building
+106ft-86ft

Overall

21916

Females

8751

F18-39

8751

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

21794

Females

8690

F18-39

8690

Half→25K

13.1 - 15.5 mi

Top 86%
×4story building
+66ft-88ft

Overall

22867

Females

9309

F18-39

9309

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

21393

Females

8573

F18-39

8573

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

20266

Females

8011

F18-39

8011

20M→21M

20.0 - 21.0 mi

Top 85%
×8story building
+106ft-24ft

Overall

22656

Females

9363

F18-39

9363

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

20197

Females

8054

F18-39

8054

35K→23M

21.8 - 23.0 mi

Top 81%
×5story building
+23ft-63ft

Overall

21688

Females

8901

F18-39

8901

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

21856

Females

9027

F18-39

9027

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

22787

Females

9545

F18-39

9545

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

19135

Females

7596

F18-39

7596

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2story building
+22ft-21ft

Overall

18916

Females

7409

F18-39

7409

Passing Analysis

Category:
Athletes Passed
1958
Passed By
572
Net Change
+1386
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23648
5K → 10K115302-187#23648#23835
10K → 15K35313+340#23835#23495
15K → 20K39313+380#23495#23115
20K → Half773+74#23115#23041
Half → 25K11357+56#23041#22985
25K → 30K29411+283#22985#22702
30K → 20M1901+189#22702#22513
20M → 21M4967-18#22513#22531
21M → 35K912+89#22531#22442
35K → 23M7732+45#22442#22397
23M → 24M4024+16#22397#22381
24M → 40K3343-10#22381#22391
40K → 25.2M462+44#22391#22347
25.2M → Finish872+85#22347#22262
TOTALS1958572+1386
📊

Passing Visuals

Category:
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