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BOSTON MARATHON 2023

Katie Mcelroy

Bib: 17812•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 46%
Gender (Female)
#0 / 11423
Top 28%
Division (F18-39)
#0 / 4884
Top 46%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
25:13
Rank: #14836
Start → 5K
25:13 | 8:07/mi
10K· 6.21 mi
49:39
Rank: #14322 (+514)
5K → 10K
24:26 | 7:52/mi
15K· 9.32 mi
1:13:40
Rank: #13608 (+714)
10K → 15K
24:01 | 7:44/mi
20K· 12.43 mi
1:37:50
Rank: #13066 (+542)
15K → 20K
24:10 | 7:47/mi
Half· 13.11 mi
1:43:08
Rank: #13011 (+55)
20K → Half
5:18 | 7:46/mi
25K· 15.53 mi
2:02:15
Rank: #12786 (+225)
Half → 25K
19:07 | 7:53/mi
30K· 18.64 mi
2:27:10
Rank: #12420 (+366)
25K → 30K
24:55 | 8:01/mi
20M
2:38:14
Rank: #12313 (+107)
30K → 20M
11:04 | 8:09/mi
21M
2:46:55
Rank: #12249 (+64)
20M → 21M
8:41 | 8:41/mi
35K· 21.75 mi
2:52:53
Rank: #12229 (+20)
21M → 35K
5:58 | 7:59/mi
23M
3:03:20
Rank: #12233 (-4)
35K → 23M
10:27 | 8:21/mi
24M
3:11:30
Rank: #12236 (-3)
23M → 24M
8:10 | 8:10/mi
40K· 24.85 mi
3:18:38
Rank: #12221 (+15)
24M → 40K
7:08 | 8:21/mi
25.2M
3:21:44
Rank: #12227 (-6)
40K → 25.2M
3:06 | 8:59/mi
Finish· 26.22 mi
3:29:53
Rank: #12220 (+7)
25.2M → Finish
8:09 | 8:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:08
Pace7:52 /mi
2nd Half
Distance13.11 mi
Time1:46:45
Pace8:09 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:0125:138:0725:13
8:07
-
10K
6.21 mi11:40:2749:397:5924:26
7:52
-0:15
15K
9.32 mi12:04:281:13:407:5424:01
7:44
-0:08
20K
12.43 mi12:28:381:37:507:5224:10
7:47
+0:03
Half
13.11 mi12:33:561:43:087:525:18
7:46
-0:01
25K
15.53 mi12:53:032:02:157:5219:07
7:53
+0:07
30K
18.64 mi13:17:582:27:107:5424:55
8:01
+0:08
20M
20.00 mi13:29:022:38:147:5511:04
8:09
+0:08
21M
21.00 mi13:37:432:46:557:578:41
8:41
+0:32
35K
21.75 mi13:43:412:52:537:575:58
7:59
-0:42
23M
23.00 mi13:54:083:03:207:5810:27
8:21
+0:22
24M
24.00 mi14:02:183:11:307:598:10
8:10
-0:11
40K
24.85 mi14:09:263:18:388:007:08
8:21
+0:11
25.2M
25.20 mi14:12:323:21:448:003:06
8:59
+0:38
Finish
26.22 mi14:20:413:29:538:018:09
8:00
-0:59

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

7:44 /mi

Average Pace

8:01 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

3:18:06

94% of race

Time at Steady Pace

11:47

6% of race

Time at Slower Pace

0:00

0% 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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:16:0125:138:0725:13
8:07
#14836
10K
6.21 mi11:40:2749:397:5924:26
7:52
#14322
15K
9.32 mi12:04:281:13:407:5424:01
7:44
#13608
20K
12.43 mi12:28:381:37:507:5224:10
7:47
#13066
Half
13.11 mi12:33:561:43:087:525:18
7:46
#13011
25K
15.53 mi12:53:032:02:157:5219:07
7:53
#12786
30K
18.64 mi13:17:582:27:107:5424:55
8:01
#12420
20M
20.00 mi13:29:022:38:147:5511:04
8:09
#12313
21M
21.00 mi13:37:432:46:557:578:41
8:41
#12249
35K
21.75 mi13:43:412:52:537:575:58
7:59
#12229
23M
23.00 mi13:54:083:03:207:5810:27
8:21
#12233
24M
24.00 mi14:02:183:11:307:598:10
8:10
#12236
40K
24.85 mi14:09:263:18:388:007:08
8:21
#12221
25.2M
25.20 mi14:12:323:21:448:003:06
8:59
#12227
Finish
26.22 mi14:20:413:29:538:018:09
8:00
#12220
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi148364532453212123(Top 46%)2965(Top 26%)2965(Top 61%)
10K6.21 mi3.10 mi14322+5144239+2934239+29313689(Top 51%)3849(Top 34%)3849(Top 79%)
15K9.32 mi3.11 mi13608+7143821+4183821+41812123(Top 46%)2965(Top 26%)2965(Top 61%)
20K12.43 mi3.11 mi13066+5423522+2993522+29911573(Top 43%)2727(Top 24%)2727(Top 56%)
Half13.11 mi0.68 mi13011+553492+303492+3012505(Top 47%)3208(Top 28%)3208(Top 66%)
25K15.53 mi2.42 mi12786+2253388+1043388+10411815(Top 44%)2968(Top 26%)2968(Top 61%)
30K18.64 mi3.11 mi12420+3663211+1773211+17711082(Top 42%)2686(Top 24%)2686(Top 55%)
20M20.00 mi1.36 mi12313+1073166+453166+4511330(Top 43%)2904(Top 25%)2904(Top 59%)
21M21.00 mi1.00 mi12249+643150+163150+1611579(Top 43%)3184(Top 28%)3184(Top 65%)
35K21.75 mi0.75 mi12229+203155-53155-511976(Top 45%)3412(Top 30%)3412(Top 70%)
23M23.00 mi1.25 mi12233-43186-313186-3112234(Top 46%)3645(Top 32%)3645(Top 75%)
24M24.00 mi1.00 mi12236-33208-223208-2212400(Top 47%)3797(Top 33%)3797(Top 78%)
40K24.85 mi0.85 mi12221+153217-93217-912353(Top 46%)3853(Top 34%)3853(Top 79%)
25.2M25.20 mi0.35 mi12227-63229-123229-1212509(Top 47%)3968(Top 35%)3968(Top 81%)
Finish26.22 mi1.02 mi12220+73243-143243-1412143(Top 46%)3772(Top 33%)3772(Top 77%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21stories
+97ft-345ft

Overall

12123

Females

2965

F18-39

2965

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

13689

Females

3849

F18-39

3849

10K→15K

6.2 - 9.3 mi

Top 46%
×3stories
+67ft-78ft

Overall

12123

Females

2965

F18-39

2965

15K→20K

9.3 - 12.4 mi

Top 43%
×5stories
+106ft-86ft

Overall

11573

Females

2727

F18-39

2727

20K→Half

12.4 - 13.1 mi

Top 47%
×2stories
+19ft-37ft

Overall

12505

Females

3208

F18-39

3208

Half→25K

13.1 - 15.5 mi

Top 44%
×4stories
+66ft-88ft

Overall

11815

Females

2968

F18-39

2968

25K→30K

15.5 - 18.6 mi

Top 42%
×9stories
+181ft-148ft

Overall

11082

Females

2686

F18-39

2686

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

11330

Females

2904

F18-39

2904

20M→21M

20.0 - 21.0 mi

Top 43%
×8stories
+106ft-24ft

Overall

11579

Females

3184

F18-39

3184

21M→35K

21.0 - 21.8 mi

Top 45%
×7stories
+17ft-86ft

Overall

11976

Females

3412

F18-39

3412

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

12234

Females

3645

F18-39

3645

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

12400

Females

3797

F18-39

3797

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12353

Females

3853

F18-39

3853

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12509

Females

3968

F18-39

3968

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

12143

Females

3772

F18-39

3772

Passing Analysis

Category:
Athletes Passed
3308
Passed By
692
Net Change
+2616
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14836
5K → 10K622108+514#14836#14322
10K → 15K73218+714#14322#13608
15K → 20K55816+542#13608#13066
20K → Half6611+55#13066#13011
Half → 25K25934+225#13011#12786
25K → 30K41145+366#12786#12420
30K → 20M15245+107#12420#12313
20M → 21M12460+64#12313#12249
21M → 35K5333+20#12249#12229
35K → 23M9397-4#12229#12233
23M → 24M5558-3#12233#12236
24M → 40K6550+15#12236#12221
40K → 25.2M3440-6#12221#12227
25.2M → Finish8477+7#12227#12220
TOTALS3308692+2616
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing