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BOSTON MARATHON 2023

Kathryn House

Bib: 14887•F

IL

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 30%
Division (F18-39)
#0 / 4884
Top 48%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:50/mi
24:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:53/mi
48:48
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:13:44
↑ 67↓ 78
20K· 12.43 mi
7:54/mi
1:38:16
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:43:36
↑ 19↓ 370.5%
25K· 15.53 mi
7:56/mi
2:02:51
↑ 66↓ 880.2%
30K· 18.64 mi
8:13/mi
2:28:23
↑ 181↓ 1480.2%
20M
8:23/mi
2:39:47
↑ 64↓ 500.2%
21M
8:37/mi
2:48:24
↑ 106↓ 241.6%
35K· 21.75 mi
8:13/mi
2:54:33
↑ 17↓ 861.7%
23M
8:26/mi
3:05:07
↑ 23↓ 630.6%
24M
8:04/mi
3:13:11
↓ 821.3%
40K· 24.85 mi
8:14/mi
3:20:13
↓ 200.3%
25.2M
8:27/mi
3:23:08
↑ 13↓ 160.2%
Finish· 26.22 mi
7:39/mi
3:30:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:36
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:47:20
Pace8:11 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:3324:207:5024:20
7:50
-
10K
6.21 mi11:18:0148:487:5124:28
7:53
+0:03
15K
9.32 mi11:42:571:13:447:5524:56
8:02
+0:09
20K
12.43 mi12:07:291:38:167:5424:32
7:54
-0:08
Half
13.11 mi12:12:491:43:367:545:20
7:49
-0:05
25K
15.53 mi12:32:042:02:517:5419:15
7:56
+0:07
30K
18.64 mi12:57:362:28:237:5825:32
8:13
+0:17
20M
20.00 mi13:09:002:39:477:5911:24
8:23
+0:10
21M
21.00 mi13:17:372:48:248:018:37
8:37
+0:14
35K
21.75 mi13:23:462:54:338:026:09
8:13
-0:24
23M
23.00 mi13:34:203:05:078:0310:34
8:26
+0:13
24M
24.00 mi13:42:243:13:118:038:04
8:04
-0:22
40K
24.85 mi13:49:263:20:138:037:02
8:14
+0:10
25.2M
25.20 mi13:52:213:23:088:042:55
8:27
+0:13
Finish
26.22 mi14:00:093:30:568:037:48
7:39
-0:48

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

7:39 /mi

Average Pace

8:03 /mi

Slowest Pace

8:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:08:50

90% of race

Time at Steady Pace

22:06

10% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:03 /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 mi10:53:3324:207:5024:20
7:50
#12686
10K
6.21 mi11:18:0148:487:5124:28
7:53
#13224
15K
9.32 mi11:42:571:13:447:5524:56
8:02
#13667
20K
12.43 mi12:07:291:38:167:5424:32
7:54
#13388
Half
13.11 mi12:12:491:43:367:545:20
7:49
#13343
25K
15.53 mi12:32:042:02:517:5419:15
7:56
#13123
30K
18.64 mi12:57:362:28:237:5825:32
8:13
#12988
20M
20.00 mi13:09:002:39:477:5911:24
8:23
#12960
21M
21.00 mi13:17:372:48:248:018:37
8:37
#12818
35K
21.75 mi13:23:462:54:338:026:09
8:13
#12833
23M
23.00 mi13:34:203:05:078:0310:34
8:26
#12837
24M
24.00 mi13:42:243:13:118:038:04
8:04
#12759
40K
24.85 mi13:49:263:20:138:037:02
8:14
#12703
25.2M
25.20 mi13:52:213:23:088:042:55
8:27
#12651
Finish
26.22 mi14:00:093:30:568:037:48
7:39
#12513
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi126863273327314592(Top 55%)4435(Top 39%)4435(Top 91%)
10K6.21 mi3.10 mi13224-5383576-3033576-30313780(Top 52%)3910(Top 34%)3910(Top 80%)
15K9.32 mi3.11 mi13667-4433863-2873863-28714592(Top 55%)4435(Top 39%)4435(Top 91%)
20K12.43 mi3.11 mi13388+2793714+1493714+14912602(Top 47%)3319(Top 29%)3319(Top 68%)
Half13.11 mi0.68 mi13343+453691+233691+2312920(Top 49%)3449(Top 30%)3449(Top 71%)
25K15.53 mi2.42 mi13123+2203565+1263565+12612242(Top 46%)3220(Top 28%)3220(Top 66%)
30K18.64 mi3.11 mi12988+1353540+253540+2512474(Top 47%)3449(Top 30%)3449(Top 71%)
20M20.00 mi1.36 mi12960+283544-43544-412961(Top 49%)3830(Top 34%)3830(Top 78%)
21M21.00 mi1.00 mi12818+1423488+563488+5611189(Top 42%)2971(Top 26%)2971(Top 61%)
35K21.75 mi0.75 mi12833-153506-183506-1813597(Top 51%)4332(Top 38%)4332(Top 89%)
23M23.00 mi1.25 mi12837-43530-243530-2412863(Top 48%)3987(Top 35%)3987(Top 82%)
24M24.00 mi1.00 mi12759+783507+233507+2311722(Top 44%)3441(Top 30%)3441(Top 70%)
40K24.85 mi0.85 mi12703+563492+153492+1511569(Top 43%)3447(Top 30%)3447(Top 71%)
25.2M25.20 mi0.35 mi12651+523471+213471+219359(Top 35%)2418(Top 21%)2418(Top 50%)
Finish26.22 mi1.02 mi12513+1383412+593412+599700(Top 36%)2579(Top 23%)2579(Top 53%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14592

Females

4435

F18-39

4435

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

13780

Females

3910

F18-39

3910

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14592

Females

4435

F18-39

4435

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

12602

Females

3319

F18-39

3319

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

12920

Females

3449

F18-39

3449

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

12242

Females

3220

F18-39

3220

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

12474

Females

3449

F18-39

3449

30K→20M

18.6 - 20.0 mi

Top 49%
×5story building
+64ft-50ft

Overall

12961

Females

3830

F18-39

3830

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11189

Females

2971

F18-39

2971

21M→35K

21.0 - 21.8 mi

Top 51%
×7story building
+17ft-86ft

Overall

13597

Females

4332

F18-39

4332

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

12863

Females

3987

F18-39

3987

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

11722

Females

3441

F18-39

3441

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11569

Females

3447

F18-39

3447

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9359

Females

2418

F18-39

2418

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9700

Females

2579

F18-39

2579

Passing Analysis

Category:
Athletes Passed
1911
Passed By
1738
Net Change
+173
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12686
5K → 10K121659-538#12686#13224
10K → 15K71514-443#13224#13667
15K → 20K32647+279#13667#13388
20K → Half6015+45#13388#13343
Half → 25K26343+220#13343#13123
25K → 30K257122+135#13123#12988
30K → 20M10880+28#12988#12960
20M → 21M17331+142#12960#12818
21M → 35K4762-15#12818#12833
35K → 23M8084-4#12833#12837
23M → 24M10628+78#12837#12759
24M → 40K8933+56#12759#12703
40K → 25.2M564+52#12703#12651
25.2M → Finish15416+138#12651#12513
TOTALS19111738+173
📊

Passing Visuals

Category:
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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