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BOSTON MARATHON 2023

Kerri Nelson

Bib: 7545•F

NH

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
34:36
Rank: #25863
Start → 5K
34:36 | 11:08/mi
10K· 6.21 mi
1:08:38
Rank: #25660 (+203)
5K → 10K
34:02 | 10:57/mi
15K· 9.32 mi
1:44:48
Rank: #25733 (-73)
10K → 15K
36:10 | 11:38/mi
20K· 12.43 mi
2:22:02
Rank: #25733
15K → 20K
37:14 | 11:59/mi
Half· 13.11 mi
2:29:40
Rank: #25704 (+29)
20K → Half
7:38 | 11:11/mi
25K· 15.53 mi
2:59:06
Rank: #25625 (+79)
Half → 25K
29:26 | 12:08/mi
30K· 18.64 mi
3:38:55
Rank: #25589 (+36)
25K → 30K
39:49 | 12:49/mi
20M
3:56:49
Rank: #25572 (+17)
30K → 20M
17:54 | 13:10/mi
21M
4:11:58
Rank: #25606 (-34)
20M → 21M
15:09 | 15:09/mi
35K· 21.75 mi
4:21:16
Rank: #25581 (+25)
21M → 35K
9:18 | 12:26/mi
23M
4:37:04
Rank: #25544 (+37)
35K → 23M
15:48 | 12:37/mi
24M
4:49:38
Rank: #25542 (+2)
23M → 24M
12:34 | 12:34/mi
40K· 24.85 mi
4:59:51
Rank: #25491 (+51)
24M → 40K
10:13 | 11:57/mi
25.2M
5:04:48
Rank: #25494 (-3)
40K → 25.2M
4:57 | 14:21/mi
Finish· 26.22 mi
5:16:41
Rank: #25484 (+10)
25.2M → Finish
11:53 | 11:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:29:40
Pace11:25 /mi
2nd Half
Distance13.11 mi
Time2:47:01
Pace12:44 /mi
📊Positive Split: 11.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:41:0034:3611:0834:36
11:08
-
10K
6.21 mi11:15:021:08:3811:0334:02
10:57
-0:11
15K
9.32 mi11:51:121:44:4811:1536:10
11:38
+0:41
20K
12.43 mi12:28:262:22:0211:2637:14
11:59
+0:21
Half
13.11 mi12:36:042:29:4011:257:38
11:11
-0:48
25K
15.53 mi13:05:302:59:0611:3229:26
12:08
+0:57
30K
18.64 mi13:45:193:38:5511:4539:49
12:49
+0:41
20M
20.00 mi14:03:133:56:4911:5017:54
13:10
+0:21
21M
21.00 mi14:18:224:11:5812:0015:09
15:09
+1:59
35K
21.75 mi14:27:404:21:1612:019:18
12:26
-2:43
23M
23.00 mi14:43:284:37:0412:0315:48
12:37
+0:11
24M
24.00 mi14:56:024:49:3812:0412:34
12:34
-0:03
40K
24.85 mi15:06:154:59:5112:0410:13
11:57
-0:37
25.2M
25.20 mi15:11:125:04:4812:064:57
14:21
+2:24
Finish
26.22 mi15:23:055:16:4112:0511:53
11:40
-2:41

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

10:57 /mi

Average Pace

12:05 /mi

Slowest Pace

15:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:16:16

24% of race

Time at Steady Pace

2:42:36

51% of race

Time at Slower Pace

1:17:49

25% of race

Average Pace: 12:05 /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 mi10:41:0034:3611:0834:36
11:08
#25863
10K
6.21 mi11:15:021:08:3811:0334:02
10:57
#25660
15K
9.32 mi11:51:121:44:4811:1536:10
11:38
#25733
20K
12.43 mi12:28:262:22:0211:2637:14
11:59
#25733
Half
13.11 mi12:36:042:29:4011:257:38
11:11
#25704
25K
15.53 mi13:05:302:59:0611:3229:26
12:08
#25625
30K
18.64 mi13:45:193:38:5511:4539:49
12:49
#25589
20M
20.00 mi14:03:133:56:4911:5017:54
13:10
#25572
21M
21.00 mi14:18:224:11:5812:0015:09
15:09
#25606
35K
21.75 mi14:27:404:21:1612:019:18
12:26
#25581
23M
23.00 mi14:43:284:37:0412:0315:48
12:37
#25544
24M
24.00 mi14:56:024:49:3812:0412:34
12:34
#25542
40K
24.85 mi15:06:154:59:5112:0410:13
11:57
#25491
25.2M
25.20 mi15:11:125:04:4812:064:57
14:21
#25494
Finish
26.22 mi15:23:055:16:4112:0511:53
11:40
#25484
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25863109641096425832(Top 97%)10938(Top 96%)10938(Top 224%)
10K6.21 mi3.10 mi25660+20310834+13010834+13025414(Top 95%)10677(Top 93%)10677(Top 219%)
15K9.32 mi3.11 mi25733-7310871-3710871-3725832(Top 97%)10938(Top 96%)10938(Top 224%)
20K12.43 mi3.11 mi2573310891-2010891-2025647(Top 96%)10853(Top 95%)10853(Top 222%)
Half13.11 mi0.68 mi25704+2910876+1510876+1525203(Top 95%)10615(Top 93%)10615(Top 217%)
25K15.53 mi2.42 mi25625+7910830+4610830+4625270(Top 95%)10668(Top 93%)10668(Top 218%)
30K18.64 mi3.11 mi25589+3610822+810822+825268(Top 95%)10721(Top 94%)10721(Top 220%)
20M20.00 mi1.36 mi25572+1710819+310819+325306(Top 95%)10758(Top 94%)10758(Top 220%)
21M21.00 mi1.00 mi25606-3410835-1610835-1625815(Top 97%)11009(Top 96%)11009(Top 225%)
35K21.75 mi0.75 mi25581+2510828+710828+725110(Top 94%)10709(Top 94%)10709(Top 219%)
23M23.00 mi1.25 mi25544+3710816+1210816+1224718(Top 93%)10497(Top 92%)10497(Top 215%)
24M24.00 mi1.00 mi25542+210820-410820-425124(Top 94%)10746(Top 94%)10746(Top 220%)
40K24.85 mi0.85 mi25491+5110797+2310797+2323838(Top 90%)10105(Top 88%)10105(Top 207%)
25.2M25.20 mi0.35 mi25494-310801-410801-425294(Top 95%)10825(Top 95%)10825(Top 222%)
Finish26.22 mi1.02 mi25484+1010796+510796+524900(Top 94%)10611(Top 93%)10611(Top 217%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21stories
+97ft-345ft

Overall

25832

Females

10938

F18-39

10938

5K→10K

3.1 - 6.2 mi

Top 95%
×5stories
+79ft-138ft

Overall

25414

Females

10677

F18-39

10677

10K→15K

6.2 - 9.3 mi

Top 97%
×3stories
+67ft-78ft

Overall

25832

Females

10938

F18-39

10938

15K→20K

9.3 - 12.4 mi

Top 96%
×5stories
+106ft-86ft

Overall

25647

Females

10853

F18-39

10853

20K→Half

12.4 - 13.1 mi

Top 95%
×2stories
+19ft-37ft

Overall

25203

Females

10615

F18-39

10615

Half→25K

13.1 - 15.5 mi

Top 95%
×4stories
+66ft-88ft

Overall

25270

Females

10668

F18-39

10668

25K→30K

15.5 - 18.6 mi

Top 95%
×9stories
+181ft-148ft

Overall

25268

Females

10721

F18-39

10721

30K→20M

18.6 - 20.0 mi

Top 95%
×5stories
+64ft-50ft

Overall

25306

Females

10758

F18-39

10758

20M→21M

20.0 - 21.0 mi

Top 97%
×8stories
+106ft-24ft

Overall

25815

Females

11009

F18-39

11009

21M→35K

21.0 - 21.8 mi

Top 94%
×7stories
+17ft-86ft

Overall

25110

Females

10709

F18-39

10709

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

24718

Females

10497

F18-39

10497

23M→24M

23.0 - 24.0 mi

Top 94%
×6stories
+12ft-82ft

Overall

25124

Females

10746

F18-39

10746

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

23838

Females

10105

F18-39

10105

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

25294

Females

10825

F18-39

10825

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2stories
+22ft-21ft

Overall

24900

Females

10611

F18-39

10611

Passing Analysis

Category:
Athletes Passed
838
Passed By
459
Net Change
+379
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25863
5K → 10K25047+203#25863#25660
10K → 15K65138-73#25660#25733
15K → 20K80800#25733#25733
20K → Half323+29#25733#25704
Half → 25K10223+79#25704#25625
25K → 30K8347+36#25625#25589
30K → 20M4023+17#25589#25572
20M → 21M1549-34#25572#25606
21M → 35K305+25#25606#25581
35K → 23M447+37#25581#25544
23M → 24M1715+2#25544#25542
24M → 40K554+51#25542#25491
40K → 25.2M58-3#25491#25494
25.2M → Finish2010+10#25494#25484
TOTALS838459+379
📊

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