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BOSTON MARATHON 2023

Kat Baldwyn

Bib: 15139•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 39%
Gender (Female)
#0 / 11423
Top 21%
Division (F18-39)
#0 / 4884
Top 36%
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
8:02/mi
24:59
↑ 97↓ 3451.5%
10K· 6.21 mi
7:51/mi
49:22
↑ 79↓ 1380.4%
15K· 9.32 mi
7:55/mi
1:13:58
↑ 67↓ 78
20K· 12.43 mi
7:58/mi
1:38:43
↑ 106↓ 860.1%
Half· 13.11 mi
7:46/mi
1:44:01
↑ 19↓ 370.5%
25K· 15.53 mi
7:45/mi
2:02:49
↑ 66↓ 880.2%
30K· 18.64 mi
7:52/mi
2:27:16
↑ 181↓ 1480.2%
20M
7:50/mi
2:37:55
↑ 64↓ 500.2%
21M
8:04/mi
2:45:59
↑ 106↓ 241.6%
35K· 21.75 mi
7:28/mi
2:51:34
↑ 17↓ 861.7%
23M
7:38/mi
3:01:08
↑ 23↓ 630.6%
24M
7:21/mi
3:08:29
↓ 821.3%
40K· 24.85 mi
7:27/mi
3:14:51
↓ 200.3%
25.2M
7:35/mi
3:17:28
↑ 13↓ 160.2%
Finish· 26.22 mi
6:55/mi
3:24:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:44:01
Pace7:56 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:40:30
Pace7:40 /mi
📊Negative Split: 3.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:3424:598:0224:59
8:02
-
10K
6.21 mi11:18:5749:227:5724:23
7:51
-0:11
15K
9.32 mi11:43:331:13:587:5624:36
7:55
+0:04
20K
12.43 mi12:08:181:38:437:5724:45
7:58
+0:03
Half
13.11 mi12:13:361:44:017:565:18
7:46
-0:12
25K
15.53 mi12:32:242:02:497:5418:48
7:45
-0:01
30K
18.64 mi12:56:512:27:167:5424:27
7:52
+0:07
20M
20.00 mi13:07:302:37:557:5410:39
7:50
-0:02
21M
21.00 mi13:15:342:45:597:548:04
8:04
+0:14
35K
21.75 mi13:21:092:51:347:535:35
7:28
-0:36
23M
23.00 mi13:30:433:01:087:539:34
7:38
+0:10
24M
24.00 mi13:38:043:08:297:517:21
7:21
-0:17
40K
24.85 mi13:44:263:14:517:506:22
7:27
+0:06
25.2M
25.20 mi13:47:033:17:287:502:37
7:35
+0:08
Finish
26.22 mi13:54:063:24:317:487:03
6:55
-0:40

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

6:55 /mi

Average Pace

7:48 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

28:58

14% of race

Time at Steady Pace

2:55:33

86% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:48 /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 mi10:54:3424:598:0224:59
8:02
#14302
10K
6.21 mi11:18:5749:227:5724:23
7:51
#13948
15K
9.32 mi11:43:331:13:587:5624:36
7:55
#13867
20K
12.43 mi12:08:181:38:437:5724:45
7:58
#13647
Half
13.11 mi12:13:361:44:017:565:18
7:46
#13586
25K
15.53 mi12:32:242:02:497:5418:48
7:45
#13098
30K
18.64 mi12:56:512:27:167:5424:27
7:52
#12457
20M
20.00 mi13:07:302:37:557:5410:39
7:50
#12185
21M
21.00 mi13:15:342:45:597:548:04
8:04
#11906
35K
21.75 mi13:21:092:51:347:535:35
7:28
#11757
23M
23.00 mi13:30:433:01:087:539:34
7:38
#11441
24M
24.00 mi13:38:043:08:297:517:21
7:21
#11183
40K
24.85 mi13:44:263:14:517:506:22
7:27
#10953
25.2M
25.20 mi13:47:033:17:287:502:37
7:35
#10815
Finish
26.22 mi13:54:063:24:317:487:03
6:55
#10514
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi143024203420313715(Top 52%)3905(Top 34%)3905(Top 80%)
10K6.21 mi3.10 mi13948+3544007+1964007+19613540(Top 51%)3750(Top 33%)3750(Top 77%)
15K9.32 mi3.11 mi13867+813975+323975+3213715(Top 52%)3905(Top 34%)3905(Top 80%)
20K12.43 mi3.11 mi13647+2203879+963879+9613153(Top 49%)3623(Top 32%)3623(Top 74%)
Half13.11 mi0.68 mi13586+613832+473832+4712455(Top 47%)3158(Top 28%)3158(Top 65%)
25K15.53 mi2.42 mi13098+4883545+2873545+28710746(Top 40%)2359(Top 21%)2359(Top 48%)
30K18.64 mi3.11 mi12457+6413229+3163229+3169918(Top 37%)2121(Top 19%)2121(Top 43%)
20M20.00 mi1.36 mi12185+2723096+1333096+1339174(Top 34%)1877(Top 16%)1877(Top 38%)
21M21.00 mi1.00 mi11906+2792956+1402956+1407842(Top 29%)1457(Top 13%)1457(Top 30%)
35K21.75 mi0.75 mi11757+1492887+692887+698341(Top 31%)1643(Top 14%)1643(Top 34%)
23M23.00 mi1.25 mi11441+3162739+1482739+1487406(Top 28%)1348(Top 12%)1348(Top 28%)
24M24.00 mi1.00 mi11183+2582616+1232616+1236778(Top 25%)1200(Top 11%)1200(Top 25%)
40K24.85 mi0.85 mi10953+2302529+872529+876424(Top 24%)1142(Top 10%)1142(Top 23%)
25.2M25.20 mi0.35 mi10815+1382473+562473+564428(Top 17%)583(Top 5%)583(Top 12%)
Finish26.22 mi1.02 mi10514+3012354+1192354+1194787(Top 18%)672(Top 6%)672(Top 14%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

13715

Females

3905

F18-39

3905

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

13540

Females

3750

F18-39

3750

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

13715

Females

3905

F18-39

3905

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

13153

Females

3623

F18-39

3623

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

12455

Females

3158

F18-39

3158

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

10746

Females

2359

F18-39

2359

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

9918

Females

2121

F18-39

2121

30K→20M

18.6 - 20.0 mi

Top 34%
×5story building
+64ft-50ft

Overall

9174

Females

1877

F18-39

1877

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

7842

Females

1457

F18-39

1457

21M→35K

21.0 - 21.8 mi

Top 31%
×7story building
+17ft-86ft

Overall

8341

Females

1643

F18-39

1643

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

7406

Females

1348

F18-39

1348

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

6778

Females

1200

F18-39

1200

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6424

Females

1142

F18-39

1142

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4428

Females

583

F18-39

583

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2story building
+22ft-21ft

Overall

4787

Females

672

F18-39

672

Passing Analysis

Category:
Athletes Passed
4193
Passed By
405
Net Change
+3788
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14302
5K → 10K505151+354#14302#13948
10K → 15K226145+81#13948#13867
15K → 20K29171+220#13867#13647
20K → Half7312+61#13647#13586
Half → 25K4913+488#13586#13098
25K → 30K6454+641#13098#12457
30K → 20M2797+272#12457#12185
20M → 21M2834+279#12185#11906
21M → 35K1512+149#11906#11757
35K → 23M3204+316#11757#11441
23M → 24M2580+258#11441#11183
24M → 40K2300+230#11183#10953
40K → 25.2M1380+138#10953#10815
25.2M → Finish3032+301#10815#10514
TOTALS4193405+3788
📊

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