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BOSTON MARATHON 2023

Kathryn Parks

Bib: 15855•F

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F70-74)
#0 / 62
Top 23%
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
10:04/mi
31:16
↑ 97↓ 3451.5%
10K· 6.21 mi
10:04/mi
1:02:33
↑ 79↓ 1380.4%
15K· 9.32 mi
9:45/mi
1:32:49
↑ 67↓ 78
20K· 12.43 mi
11:37/mi
2:08:55
↑ 106↓ 860.1%
Half· 13.11 mi
9:43/mi
2:15:33
↑ 19↓ 370.5%
25K· 15.53 mi
9:48/mi
2:39:19
↑ 66↓ 880.2%
30K· 18.64 mi
10:17/mi
3:11:17
↑ 181↓ 1480.2%
20M
10:09/mi
3:25:04
↑ 64↓ 500.2%
21M
10:50/mi
3:35:54
↑ 106↓ 241.6%
35K· 21.75 mi
10:11/mi
3:43:31
↑ 17↓ 861.7%
23M
10:13/mi
3:56:18
↑ 23↓ 630.6%
24M
9:32/mi
4:05:50
↓ 821.3%
40K· 24.85 mi
9:49/mi
4:14:14
↓ 200.3%
25.2M
10:18/mi
4:17:47
↑ 13↓ 160.2%
Finish· 26.22 mi
9:22/mi
4:27:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time2:15:33
Pace10:20 /mi
2nd Half✓ Faster
Distance13.11 mi
Time2:11:47
Pace10:03 /mi
📊Negative Split: 2.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:02:1331:1610:0431:16
10:04
-
10K
6.21 mi11:33:301:02:3310:0431:17
10:04
0:00
15K
9.32 mi12:03:461:32:499:5730:16
9:45
-0:19
20K
12.43 mi12:39:522:08:5510:2236:06
11:37
+1:52
Half
13.11 mi12:46:302:15:3310:206:38
9:43
-1:54
25K
15.53 mi13:10:162:39:1910:1523:46
9:48
+0:05
30K
18.64 mi13:42:143:11:1710:1631:58
10:17
+0:29
20M
20.00 mi13:56:013:25:0410:1513:47
10:09
-0:08
21M
21.00 mi14:06:513:35:5410:1710:50
10:50
+0:41
35K
21.75 mi14:14:283:43:3110:177:37
10:11
-0:39
23M
23.00 mi14:27:153:56:1810:1612:47
10:13
+0:02
24M
24.00 mi14:36:474:05:5010:159:32
9:32
-0:41
40K
24.85 mi14:45:114:14:1410:148:24
9:49
+0:17
25.2M
25.20 mi14:48:444:17:4710:143:33
10:18
+0:29
Finish
26.22 mi14:58:174:27:2010:129:33
9:22
-0:56

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

9:22 /mi

Average Pace

10:12 /mi

Slowest Pace

11:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:19:45

30% of race

Time at Steady Pace

2:20:39

53% of race

Time at Slower Pace

46:56

18% of race

Average Pace: 10:12 /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 mi11:02:1331:1610:0431:16
10:04
#23590
10K
6.21 mi11:33:301:02:3310:0431:17
10:04
#23771
15K
9.32 mi12:03:461:32:499:5730:16
9:45
#23519
20K
12.43 mi12:39:522:08:5510:2236:06
11:37
#24168
Half
13.11 mi12:46:302:15:3310:206:38
9:43
#24076
25K
15.53 mi13:10:162:39:1910:1523:46
9:48
#23692
30K
18.64 mi13:42:143:11:1710:1631:58
10:17
#23358
20M
20.00 mi13:56:013:25:0410:1513:47
10:09
#23189
21M
21.00 mi14:06:513:35:5410:1710:50
10:50
#23054
35K
21.75 mi14:14:283:43:3110:177:37
10:11
#23009
23M
23.00 mi14:27:153:56:1810:1612:47
10:13
#22866
24M
24.00 mi14:36:474:05:5010:159:32
9:32
#22741
40K
24.85 mi14:45:114:14:1410:148:24
9:49
#22633
25.2M
25.20 mi14:48:444:17:4710:143:33
10:18
#22582
Finish
26.22 mi14:58:174:27:2010:129:33
9:22
#22504
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF70-74Seg. OverallSeg. FemalesSeg. F70-74
5K3.11 mi3.11 mi235909695969522913(Top 86%)9293(Top 81%)9293(Top 14989%)
10K6.21 mi3.10 mi23771-1819769-749769-7423836(Top 90%)9799(Top 86%)9799(Top 15805%)
15K9.32 mi3.11 mi23519+2529622+1479622+14722913(Top 86%)9293(Top 81%)9293(Top 14989%)
20K12.43 mi3.11 mi24168-6499983-3619983-36125379(Top 95%)10704(Top 94%)10704(Top 17265%)
Half13.11 mi0.68 mi24076+929941+429941+4222722(Top 85%)9198(Top 81%)9198(Top 14835%)
25K15.53 mi2.42 mi23692+3849731+2109731+21021751(Top 82%)8705(Top 76%)8705(Top 14040%)
30K18.64 mi3.11 mi23358+3349567+1649567+16421758(Top 82%)8768(Top 77%)8768(Top 14142%)
20M20.00 mi1.36 mi23189+1699491+769491+7620876(Top 78%)8344(Top 73%)8344(Top 13458%)
21M21.00 mi1.00 mi23054+1359432+599432+5920476(Top 77%)8186(Top 72%)8186(Top 13203%)
35K21.75 mi0.75 mi23009+459416+169416+1621756(Top 82%)8910(Top 78%)8910(Top 14371%)
23M23.00 mi1.25 mi22866+1439360+569360+5620626(Top 77%)8311(Top 73%)8311(Top 13405%)
24M24.00 mi1.00 mi22741+1259299+619299+6119363(Top 73%)7653(Top 67%)7653(Top 12344%)
40K24.85 mi0.85 mi22633+1089247+529247+5219492(Top 73%)7773(Top 68%)7773(Top 12537%)
25.2M25.20 mi0.35 mi22582+519221+269221+2618528(Top 70%)7261(Top 64%)7261(Top 11711%)
Finish26.22 mi1.02 mi22504+789184+379184+3719688(Top 74%)7834(Top 69%)7834(Top 12635%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21story building
+97ft-345ft

Overall

22913

Females

9293

F70-74

9293

5K→10K

3.1 - 6.2 mi

Top 90%
×5story building
+79ft-138ft

Overall

23836

Females

9799

F70-74

9799

10K→15K

6.2 - 9.3 mi

Top 86%
×3story building
+67ft-78ft

Overall

22913

Females

9293

F70-74

9293

15K→20K

9.3 - 12.4 mi

Top 95%
×5story building
+106ft-86ft

Overall

25379

Females

10704

F70-74

10704

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

22722

Females

9198

F70-74

9198

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

21751

Females

8705

F70-74

8705

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

21758

Females

8768

F70-74

8768

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

20876

Females

8344

F70-74

8344

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

20476

Females

8186

F70-74

8186

21M→35K

21.0 - 21.8 mi

Top 82%
×7story building
+17ft-86ft

Overall

21756

Females

8910

F70-74

8910

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

20626

Females

8311

F70-74

8311

23M→24M

23.0 - 24.0 mi

Top 73%
×6story building
+12ft-82ft

Overall

19363

Females

7653

F70-74

7653

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

19492

Females

7773

F70-74

7773

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18528

Females

7261

F70-74

7261

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2story building
+22ft-21ft

Overall

19688

Females

7834

F70-74

7834

Passing Analysis

Category:
Athletes Passed
2104
Passed By
1018
Net Change
+1086
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23590
5K → 10K123304-181#23590#23771
10K → 15K27624+252#23771#23519
15K → 20K11660-649#23519#24168
20K → Half931+92#24168#24076
Half → 25K3840+384#24076#23692
25K → 30K3395+334#23692#23358
30K → 20M1712+169#23358#23189
20M → 21M1405+135#23189#23054
21M → 35K516+45#23054#23009
35K → 23M1474+143#23009#22866
23M → 24M1261+125#22866#22741
24M → 40K1091+108#22741#22633
40K → 25.2M510+51#22633#22582
25.2M → Finish835+78#22582#22504
TOTALS21041018+1086
📊

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