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BOSTON MARATHON 2023

Kirsten Read

Bib: 9728•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 37%
Gender (Female)
#0 / 11423
Top 18%
Division (F18-39)
#0 / 4884
Top 31%
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
23:30
Rank: #10221
Start → 5K
23:30 | 7:34/mi
10K· 6.21 mi
46:46
Rank: #10284 (-63)
5K → 10K
23:16 | 7:29/mi
15K· 9.32 mi
1:09:52
Rank: #10010 (+274)
10K → 15K
23:06 | 7:26/mi
20K· 12.43 mi
1:33:20
Rank: #9923 (+87)
15K → 20K
23:28 | 7:33/mi
Half· 13.11 mi
1:38:25
Rank: #9913 (+10)
20K → Half
5:05 | 7:27/mi
25K· 15.53 mi
1:56:41
Rank: #9750 (+163)
Half → 25K
18:16 | 7:32/mi
30K· 18.64 mi
2:20:49
Rank: #9628 (+122)
25K → 30K
24:08 | 7:46/mi
20M
2:31:41
Rank: #9628
30K → 20M
10:52 | 8:00/mi
21M
2:40:10
Rank: #9654 (-26)
20M → 21M
8:29 | 8:29/mi
35K· 21.75 mi
2:45:55
Rank: #9635 (+19)
21M → 35K
5:45 | 7:41/mi
23M
2:56:33
Rank: #9818 (-183)
35K → 23M
10:38 | 8:30/mi
24M
3:04:23
Rank: #9797 (+21)
23M → 24M
7:50 | 7:50/mi
40K· 24.85 mi
3:11:29
Rank: #9872 (-75)
24M → 40K
7:06 | 8:18/mi
25.2M
3:14:43
Rank: #9944 (-72)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:22:21
Rank: #9841 (+103)
25.2M → Finish
7:38 | 7:29/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:25
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time1:43:56
Pace7:56 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:4623:307:3423:30
7:34
-
10K
6.21 mi11:13:0246:467:3223:16
7:29
-0:05
15K
9.32 mi11:36:081:09:527:3023:06
7:26
-0:03
20K
12.43 mi11:59:361:33:207:3123:28
7:33
+0:07
Half
13.11 mi12:04:411:38:257:305:05
7:27
-0:06
25K
15.53 mi12:22:571:56:417:3118:16
7:32
+0:05
30K
18.64 mi12:47:052:20:497:3324:08
7:46
+0:14
20M
20.00 mi12:57:572:31:417:3510:52
8:00
+0:14
21M
21.00 mi13:06:262:40:107:388:29
8:29
+0:29
35K
21.75 mi13:12:112:45:557:385:45
7:41
-0:48
23M
23.00 mi13:22:492:56:337:4110:38
8:30
+0:49
24M
24.00 mi13:30:393:04:237:417:50
7:50
-0:40
40K
24.85 mi13:37:453:11:297:427:06
8:18
+0:28
25.2M
25.20 mi13:40:593:14:437:443:14
9:23
+1:05
Finish
26.22 mi13:48:373:22:217:437:38
7:29
-1:54

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

7:43 /mi

Slowest Pace

9:23 /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

0:00

0% of race

Time at Steady Pace

2:42:02

80% of race

Time at Slower Pace

40:19

20% of race

Average Pace: 7:43 /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 mi10:49:4623:307:3423:30
7:34
#10221
10K
6.21 mi11:13:0246:467:3223:16
7:29
#10284
15K
9.32 mi11:36:081:09:527:3023:06
7:26
#10010
20K
12.43 mi11:59:361:33:207:3123:28
7:33
#9923
Half
13.11 mi12:04:411:38:257:305:05
7:27
#9913
25K
15.53 mi12:22:571:56:417:3118:16
7:32
#9750
30K
18.64 mi12:47:052:20:497:3324:08
7:46
#9628
20M
20.00 mi12:57:572:31:417:3510:52
8:00
#9628
21M
21.00 mi13:06:262:40:107:388:29
8:29
#9654
35K
21.75 mi13:12:112:45:557:385:45
7:41
#9635
23M
23.00 mi13:22:492:56:337:4110:38
8:30
#9818
24M
24.00 mi13:30:393:04:237:417:50
7:50
#9797
40K
24.85 mi13:37:453:11:297:427:06
8:18
#9872
25.2M
25.20 mi13:40:593:14:437:443:14
9:23
#9944
Finish
26.22 mi13:48:373:22:217:437:38
7:29
#9841
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10221196419649661(Top 36%)1694(Top 15%)1694(Top 35%)
10K6.21 mi3.10 mi10284-631969-51969-510376(Top 39%)1992(Top 17%)1992(Top 41%)
15K9.32 mi3.11 mi10010+2741833+1361833+1369661(Top 36%)1694(Top 15%)1694(Top 35%)
20K12.43 mi3.11 mi9923+871806+271806+279740(Top 37%)1803(Top 16%)1803(Top 37%)
Half13.11 mi0.68 mi9913+101799+71799+79889(Top 37%)1844(Top 16%)1844(Top 38%)
25K15.53 mi2.42 mi9750+1631739+601739+609050(Top 34%)1578(Top 14%)1578(Top 32%)
30K18.64 mi3.11 mi9628+1221726+131726+139126(Top 34%)1764(Top 15%)1764(Top 36%)
20M20.00 mi1.36 mi96281763-371763-3710250(Top 39%)2343(Top 21%)2343(Top 48%)
21M21.00 mi1.00 mi9654-261786-231786-2310404(Top 39%)2575(Top 23%)2575(Top 53%)
35K21.75 mi0.75 mi9635+191795-91795-99866(Top 37%)2291(Top 20%)2291(Top 47%)
23M23.00 mi1.25 mi9818-1831915-1201915-12013166(Top 49%)4151(Top 36%)4151(Top 85%)
24M24.00 mi1.00 mi9797+211935-201935-2010049(Top 38%)2618(Top 23%)2618(Top 54%)
40K24.85 mi0.85 mi9872-752003-682003-6812070(Top 45%)3695(Top 32%)3695(Top 76%)
25.2M25.20 mi0.35 mi9944-722054-512054-5114567(Top 55%)5033(Top 44%)5033(Top 103%)
Finish26.22 mi1.02 mi9841+1032023+312023+318510(Top 32%)2031(Top 18%)2031(Top 42%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

9661

Females

1694

F18-39

1694

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10376

Females

1992

F18-39

1992

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

9661

Females

1694

F18-39

1694

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

9740

Females

1803

F18-39

1803

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9889

Females

1844

F18-39

1844

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9050

Females

1578

F18-39

1578

25K→30K

15.5 - 18.6 mi

Top 34%
×9stories
+181ft-148ft

Overall

9126

Females

1764

F18-39

1764

30K→20M

18.6 - 20.0 mi

Top 39%
×5stories
+64ft-50ft

Overall

10250

Females

2343

F18-39

2343

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10404

Females

2575

F18-39

2575

21M→35K

21.0 - 21.8 mi

Top 37%
×7stories
+17ft-86ft

Overall

9866

Females

2291

F18-39

2291

35K→23M

21.8 - 23.0 mi

Top 49%
×5stories
+23ft-63ft

Overall

13166

Females

4151

F18-39

4151

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

10049

Females

2618

F18-39

2618

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12070

Females

3695

F18-39

3695

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14567

Females

5033

F18-39

5033

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8510

Females

2031

F18-39

2031

Passing Analysis

Category:
Athletes Passed
1789*
Passed By
1409
Net Change
+380
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10221
5K → 10K269*332-63#10221#10284
10K → 15K33359+274#10284#10010
15K → 20K215*128+87#10010#9923
20K → Half3525+10#9923#9913
Half → 25K20037+163#9913#9750
25K → 30K221*99+122#9750#9628
30K → 20M92920#9628#9628
20M → 21M6591-26#9628#9654
21M → 35K4425+19#9654#9635
35K → 23M50233-183#9635#9818
23M → 24M7150+21#9818#9797
24M → 40K51126-75#9797#9872
40K → 25.2M1284-72#9872#9944
25.2M → Finish131*28+103#9944#9841
TOTALS1789*1409+380

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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