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BOSTON MARATHON 2023

Erin Bonthron

Bib: 16574•F

CO

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:11
Rank: #19190
Start → 5K
27:11 | 8:45/mi
10K· 6.21 mi
54:24
Rank: #19438 (-248)
5K → 10K
27:13 | 8:46/mi
15K· 9.32 mi
1:21:28
Rank: #19279 (+159)
10K → 15K
27:04 | 8:43/mi
20K· 12.43 mi
1:49:31
Rank: #19388 (-109)
15K → 20K
28:03 | 9:02/mi
Half· 13.11 mi
1:55:24
Rank: #19339 (+49)
20K → Half
5:53 | 8:37/mi
25K· 15.53 mi
2:18:43
Rank: #19782 (-443)
Half → 25K
23:19 | 9:37/mi
30K· 18.64 mi
2:49:34
Rank: #20041 (-259)
25K → 30K
30:51 | 9:56/mi
20M
3:03:25
Rank: #20133 (-92)
30K → 20M
13:51 | 10:12/mi
21M
3:14:21
Rank: #20173 (-40)
20M → 21M
10:56 | 10:56/mi
35K· 21.75 mi
3:21:52
Rank: #20228 (-55)
21M → 35K
7:31 | 10:03/mi
23M
3:34:58
Rank: #20288 (-60)
35K → 23M
13:06 | 10:28/mi
24M
3:45:09
Rank: #20342 (-54)
23M → 24M
10:11 | 10:11/mi
40K· 24.85 mi
3:53:56
Rank: #20340 (+2)
24M → 40K
8:47 | 10:16/mi
25.2M
3:57:45
Rank: #20341 (-1)
40K → 25.2M
3:49 | 11:04/mi
Finish· 26.22 mi
4:07:40
Rank: #20352 (-11)
25.2M → Finish
9:55 | 9:44/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:24
Pace8:48 /mi
2nd Half
Distance13.11 mi
Time2:12:16
Pace10:05 /mi
📊Positive Split: 14.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:5727:118:4527:11
8:45
-
10K
6.21 mi11:50:1054:248:4527:13
8:46
+0:01
15K
9.32 mi12:17:141:21:288:4427:04
8:43
-0:03
20K
12.43 mi12:45:171:49:318:4928:03
9:02
+0:19
Half
13.11 mi12:51:101:55:248:485:53
8:37
-0:25
25K
15.53 mi13:14:292:18:438:5623:19
9:37
+1:00
30K
18.64 mi13:45:202:49:349:0630:51
9:56
+0:19
20M
20.00 mi13:59:113:03:259:1013:51
10:12
+0:16
21M
21.00 mi14:10:073:14:219:1510:56
10:56
+0:44
35K
21.75 mi14:17:383:21:529:177:31
10:03
-0:53
23M
23.00 mi14:30:443:34:589:2113:06
10:28
+0:25
24M
24.00 mi14:40:553:45:099:2310:11
10:11
-0:17
40K
24.85 mi14:49:423:53:569:258:47
10:16
+0:05
25.2M
25.20 mi14:53:313:57:459:263:49
11:04
+0:48
Finish
26.22 mi15:03:264:07:409:279:55
9:44
-1:20

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

8:37 /mi

Average Pace

9:27 /mi

Slowest Pace

11:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:24

47% of race

Time at Steady Pace

1:44:25

42% of race

Time at Slower Pace

27:51

11% of race

Average Pace: 9:27 /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 mi11:22:5727:118:4527:11
8:45
#19190
10K
6.21 mi11:50:1054:248:4527:13
8:46
#19438
15K
9.32 mi12:17:141:21:288:4427:04
8:43
#19279
20K
12.43 mi12:45:171:49:318:4928:03
9:02
#19388
Half
13.11 mi12:51:101:55:248:485:53
8:37
#19339
25K
15.53 mi13:14:292:18:438:5623:19
9:37
#19782
30K
18.64 mi13:45:202:49:349:0630:51
9:56
#20041
20M
20.00 mi13:59:113:03:259:1013:51
10:12
#20133
21M
21.00 mi14:10:073:14:219:1510:56
10:56
#20173
35K
21.75 mi14:17:383:21:529:177:31
10:03
#20228
23M
23.00 mi14:30:443:34:589:2113:06
10:28
#20288
24M
24.00 mi14:40:553:45:099:2310:11
10:11
#20342
40K
24.85 mi14:49:423:53:569:258:47
10:16
#20340
25.2M
25.20 mi14:53:313:57:459:263:49
11:04
#20341
Finish
26.22 mi15:03:264:07:409:279:55
9:44
#20352
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi191907324732419062(Top 72%)7145(Top 63%)7145(Top 146%)
10K6.21 mi3.10 mi19438-2487422-987422-9819743(Top 74%)7543(Top 66%)7543(Top 154%)
15K9.32 mi3.11 mi19279+1597305+1177305+11719062(Top 72%)7145(Top 63%)7145(Top 146%)
20K12.43 mi3.11 mi19388-1097366-617366-6119853(Top 75%)7592(Top 66%)7592(Top 155%)
Half13.11 mi0.68 mi19339+497328+387328+3818532(Top 70%)6809(Top 60%)6809(Top 139%)
25K15.53 mi2.42 mi19782-4437598-2707598-27021183(Top 80%)8371(Top 73%)8371(Top 171%)
30K18.64 mi3.11 mi20041-2597751-1537751-15320819(Top 78%)8240(Top 72%)8240(Top 169%)
20M20.00 mi1.36 mi20133-927822-717822-7120988(Top 79%)8407(Top 74%)8407(Top 172%)
21M21.00 mi1.00 mi20173-407852-307852-3020688(Top 78%)8284(Top 73%)8284(Top 170%)
35K21.75 mi0.75 mi20228-557890-387890-3821413(Top 80%)8717(Top 76%)8717(Top 178%)
23M23.00 mi1.25 mi20288-607932-427932-4221233(Top 80%)8643(Top 76%)8643(Top 177%)
24M24.00 mi1.00 mi20342-547969-377969-3721295(Top 80%)8720(Top 76%)8720(Top 179%)
40K24.85 mi0.85 mi20340+27981-127981-1220675(Top 78%)8426(Top 74%)8426(Top 173%)
25.2M25.20 mi0.35 mi20341-17989-87989-820623(Top 77%)8384(Top 73%)8384(Top 172%)
Finish26.22 mi1.02 mi20352-118001-128001-1220914(Top 79%)8506(Top 74%)8506(Top 174%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

19062

Females

7145

F18-39

7145

5K→10K

3.1 - 6.2 mi

Top 74%
×5stories
+79ft-138ft

Overall

19743

Females

7543

F18-39

7543

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

19062

Females

7145

F18-39

7145

15K→20K

9.3 - 12.4 mi

Top 75%
×5stories
+106ft-86ft

Overall

19853

Females

7592

F18-39

7592

20K→Half

12.4 - 13.1 mi

Top 70%
×2stories
+19ft-37ft

Overall

18532

Females

6809

F18-39

6809

Half→25K

13.1 - 15.5 mi

Top 80%
×4stories
+66ft-88ft

Overall

21183

Females

8371

F18-39

8371

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

20819

Females

8240

F18-39

8240

30K→20M

18.6 - 20.0 mi

Top 79%
×5stories
+64ft-50ft

Overall

20988

Females

8407

F18-39

8407

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

20688

Females

8284

F18-39

8284

21M→35K

21.0 - 21.8 mi

Top 80%
×7stories
+17ft-86ft

Overall

21413

Females

8717

F18-39

8717

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

21233

Females

8643

F18-39

8643

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

21295

Females

8720

F18-39

8720

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20675

Females

8426

F18-39

8426

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20623

Females

8384

F18-39

8384

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2stories
+22ft-21ft

Overall

20914

Females

8506

F18-39

8506

Passing Analysis

Category:
Athletes Passed
1118
Passed By
2280
Net Change
-1162
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19190
5K → 10K220468-248#19190#19438
10K → 15K277118+159#19438#19279
15K → 20K118227-109#19279#19388
20K → Half589+49#19388#19339
Half → 25K28471-443#19339#19782
25K → 30K92351-259#19782#20041
30K → 20M60152-92#20041#20133
20M → 21M5999-40#20133#20173
21M → 35K2681-55#20173#20228
35K → 23M53113-60#20228#20288
23M → 24M2680-54#20288#20342
24M → 40K4442+2#20342#20340
40K → 25.2M1920-1#20340#20341
25.2M → Finish3849-11#20341#20352
TOTALS11182280-1162
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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