Boston Marathon logo
BOSTON MARATHON 2023

Hailey Middlebrook

Bib: 16965•F

AR

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 49%
Gender (Female)
#0 / 11423
Top 32%
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
23:05
Rank: #9081
Start → 5K
23:05 | 7:26/mi
10K· 6.21 mi
47:11
Rank: #10870 (-1789)
5K → 10K
24:06 | 7:45/mi
15K· 9.32 mi
1:10:57
Rank: #11039 (-169)
10K → 15K
23:46 | 7:39/mi
20K· 12.43 mi
1:35:36
Rank: #11473 (-434)
15K → 20K
24:39 | 7:56/mi
Half· 13.11 mi
1:40:49
Rank: #11462 (+11)
20K → Half
5:13 | 7:39/mi
25K· 15.53 mi
2:00:16
Rank: #11653 (-191)
Half → 25K
19:27 | 8:01/mi
30K· 18.64 mi
2:26:17
Rank: #12014 (-361)
25K → 30K
26:01 | 8:22/mi
20M
2:37:48
Rank: #12126 (-112)
30K → 20M
11:31 | 8:28/mi
21M
2:47:32
Rank: #12474 (-348)
20M → 21M
9:44 | 9:44/mi
35K· 21.75 mi
2:53:50
Rank: #12577 (-103)
21M → 35K
6:18 | 8:25/mi
23M
3:04:39
Rank: #12667 (-90)
35K → 23M
10:49 | 8:38/mi
24M
3:13:16
Rank: #12788 (-121)
23M → 24M
8:37 | 8:37/mi
40K· 24.85 mi
3:20:47
Rank: #12862 (-74)
24M → 40K
7:31 | 8:47/mi
25.2M
3:23:55
Rank: #12867 (-5)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:32:26
Rank: #12919 (-52)
25.2M → Finish
8:31 | 8:21/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
Time1:40:49
Pace7:41 /mi
2nd Half
Distance13.11 mi
Time1:51:37
Pace8:31 /mi
📊Positive Split: 10.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:0723:057:2623:05
7:26
-
10K
6.21 mi11:37:1347:117:3624:06
7:45
+0:19
15K
9.32 mi12:00:591:10:577:3723:46
7:39
-0:06
20K
12.43 mi12:25:381:35:367:4224:39
7:56
+0:17
Half
13.11 mi12:30:511:40:497:415:13
7:39
-0:17
25K
15.53 mi12:50:182:00:167:4519:27
8:01
+0:22
30K
18.64 mi13:16:192:26:177:5126:01
8:22
+0:21
20M
20.00 mi13:27:502:37:487:5311:31
8:28
+0:06
21M
21.00 mi13:37:342:47:327:599:44
9:44
+1:16
35K
21.75 mi13:43:522:53:508:006:18
8:25
-1:19
23M
23.00 mi13:54:413:04:398:0210:49
8:38
+0:13
24M
24.00 mi14:03:183:13:168:038:37
8:37
-0:01
40K
24.85 mi14:10:493:20:478:057:31
8:47
+0:10
25.2M
25.20 mi14:13:573:23:558:063:08
9:05
+0:18
Finish
26.22 mi14:22:283:32:268:068:31
8:21
-0:44

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

7:26 /mi

Average Pace

8:06 /mi

Slowest Pace

9:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:16

57% of race

Time at Steady Pace

1:11:47

34% of race

Time at Slower Pace

20:23

10% of race

Average Pace: 8:06 /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 mi11:13:0723:057:2623:05
7:26
#9081
10K
6.21 mi11:37:1347:117:3624:06
7:45
#10870
15K
9.32 mi12:00:591:10:577:3723:46
7:39
#11039
20K
12.43 mi12:25:381:35:367:4224:39
7:56
#11473
Half
13.11 mi12:30:511:40:497:415:13
7:39
#11462
25K
15.53 mi12:50:182:00:167:4519:27
8:01
#11653
30K
18.64 mi13:16:192:26:177:5126:01
8:22
#12014
20M
20.00 mi13:27:502:37:487:5311:31
8:28
#12126
21M
21.00 mi13:37:342:47:327:599:44
9:44
#12474
35K
21.75 mi13:43:522:53:508:006:18
8:25
#12577
23M
23.00 mi13:54:413:04:398:0210:49
8:38
#12667
24M
24.00 mi14:03:183:13:168:038:37
8:37
#12788
40K
24.85 mi14:10:493:20:478:057:31
8:47
#12862
25.2M
25.20 mi14:13:573:23:558:063:08
9:05
#12867
Finish
26.22 mi14:22:283:32:268:068:31
8:21
#12919
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi90811428142811438(Top 43%)2595(Top 23%)2595(Top 53%)
10K6.21 mi3.10 mi10870-17892262-8342262-83412753(Top 48%)3286(Top 29%)3286(Top 67%)
15K9.32 mi3.11 mi11039-1692353-912353-9111438(Top 43%)2595(Top 23%)2595(Top 53%)
20K12.43 mi3.11 mi11473-4342601-2482601-24812913(Top 49%)3498(Top 31%)3498(Top 72%)
Half13.11 mi0.68 mi11462+112602-12602-111509(Top 43%)2650(Top 23%)2650(Top 54%)
25K15.53 mi2.42 mi11653-1912730-1282730-12812935(Top 49%)3592(Top 31%)3592(Top 74%)
30K18.64 mi3.11 mi12014-3612982-2522982-25213522(Top 51%)4036(Top 35%)4036(Top 83%)
20M20.00 mi1.36 mi12126-1123069-873069-8713490(Top 51%)4119(Top 36%)4119(Top 84%)
21M21.00 mi1.00 mi12474-3483284-2153284-21516977(Top 64%)6170(Top 54%)6170(Top 126%)
35K21.75 mi0.75 mi12577-1033354-703354-7014852(Top 56%)5007(Top 44%)5007(Top 103%)
23M23.00 mi1.25 mi12667-903430-763430-7614024(Top 53%)4625(Top 40%)4625(Top 95%)
24M24.00 mi1.00 mi12788-1213525-953525-9515162(Top 57%)5313(Top 47%)5313(Top 109%)
40K24.85 mi0.85 mi12862-743588-633588-6315045(Top 57%)5314(Top 47%)5314(Top 109%)
25.2M25.20 mi0.35 mi12867-53603-153603-1513052(Top 49%)4250(Top 37%)4250(Top 87%)
Finish26.22 mi1.02 mi12919-523655-523655-5214466(Top 54%)4974(Top 44%)4974(Top 102%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21stories
+97ft-345ft

Overall

11438

Females

2595

F18-39

2595

5K→10K

3.1 - 6.2 mi

Top 48%
×5stories
+79ft-138ft

Overall

12753

Females

3286

F18-39

3286

10K→15K

6.2 - 9.3 mi

Top 43%
×3stories
+67ft-78ft

Overall

11438

Females

2595

F18-39

2595

15K→20K

9.3 - 12.4 mi

Top 49%
×5stories
+106ft-86ft

Overall

12913

Females

3498

F18-39

3498

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

11509

Females

2650

F18-39

2650

Half→25K

13.1 - 15.5 mi

Top 49%
×4stories
+66ft-88ft

Overall

12935

Females

3592

F18-39

3592

25K→30K

15.5 - 18.6 mi

Top 51%
×9stories
+181ft-148ft

Overall

13522

Females

4036

F18-39

4036

30K→20M

18.6 - 20.0 mi

Top 51%
×5stories
+64ft-50ft

Overall

13490

Females

4119

F18-39

4119

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

16977

Females

6170

F18-39

6170

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

14852

Females

5007

F18-39

5007

35K→23M

21.8 - 23.0 mi

Top 53%
×5stories
+23ft-63ft

Overall

14024

Females

4625

F18-39

4625

23M→24M

23.0 - 24.0 mi

Top 57%
×6stories
+12ft-82ft

Overall

15162

Females

5313

F18-39

5313

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15045

Females

5314

F18-39

5314

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13052

Females

4250

F18-39

4250

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

14466

Females

4974

F18-39

4974

Passing Analysis

Category:
Athletes Passed
718
Passed By
4554
Net Change
-3838
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9081
5K → 10K191806-1789#9081#10870
10K → 15K126295-169#10870#11039
15K → 20K57491-434#11039#11473
20K → Half3524+11#11473#11462
Half → 25K74265-191#11462#11653
25K → 30K83444-361#11653#12014
30K → 20M74186-112#12014#12126
20M → 21M25373-348#12126#12474
21M → 35K22125-103#12474#12577
35K → 23M61151-90#12577#12667
23M → 24M35156-121#12667#12788
24M → 40K46120-74#12788#12862
40K → 25.2M2126-5#12862#12867
25.2M → Finish4092-52#12867#12919
TOTALS7184554-3838
📊

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