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BOSTON MARATHON 2023

Natalie Walsborn

Bib: 18596•F

WA

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

Start
0:00:00
Race begins
5K· 3.11 mi
25:01
Rank: #14384
Start → 5K
25:01 | 8:03/mi
10K· 6.21 mi
48:50
Rank: #13267 (+1117)
5K → 10K
23:49 | 7:40/mi
15K· 9.32 mi
1:12:53
Rank: #12872 (+395)
10K → 15K
24:03 | 7:44/mi
20K· 12.43 mi
1:37:16
Rank: #12640 (+232)
15K → 20K
24:23 | 7:51/mi
Half· 13.11 mi
1:42:29
Rank: #12556 (+84)
20K → Half
5:13 | 7:39/mi
25K· 15.53 mi
2:01:41
Rank: #12477 (+79)
Half → 25K
19:12 | 7:55/mi
30K· 18.64 mi
2:26:53
Rank: #12305 (+172)
25K → 30K
25:12 | 8:07/mi
20M
2:38:41
Rank: #12502 (-197)
30K → 20M
11:48 | 8:41/mi
21M
2:47:46
Rank: #12572 (-70)
20M → 21M
9:05 | 9:05/mi
35K· 21.75 mi
2:53:49
Rank: #12569 (+3)
21M → 35K
6:03 | 8:05/mi
23M
3:04:20
Rank: #12556 (+13)
35K → 23M
10:31 | 8:24/mi
24M
3:12:35
Rank: #12569 (-13)
23M → 24M
8:15 | 8:15/mi
40K· 24.85 mi
3:19:44
Rank: #12569
24M → 40K
7:09 | 8:22/mi
25.2M
3:22:52
Rank: #12567 (+2)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:30:59
Rank: #12534 (+33)
25.2M → Finish
8:07 | 7:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:29
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time1:48:30
Pace8:17 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:3025:018:0325:01
8:03
-
10K
6.21 mi11:40:1948:507:5223:49
7:40
-0:23
15K
9.32 mi12:04:221:12:537:4924:03
7:44
+0:04
20K
12.43 mi12:28:451:37:167:5024:23
7:51
+0:07
Half
13.11 mi12:33:581:42:297:495:13
7:39
-0:12
25K
15.53 mi12:53:102:01:417:5019:12
7:55
+0:16
30K
18.64 mi13:18:222:26:537:5325:12
8:07
+0:12
20M
20.00 mi13:30:102:38:417:5611:48
8:41
+0:34
21M
21.00 mi13:39:152:47:467:599:05
9:05
+0:24
35K
21.75 mi13:45:182:53:498:006:03
8:05
-1:00
23M
23.00 mi13:55:493:04:208:0110:31
8:24
+0:19
24M
24.00 mi14:04:043:12:358:018:15
8:15
-0:09
40K
24.85 mi14:11:133:19:448:027:09
8:22
+0:07
25.2M
25.20 mi14:14:213:22:528:033:08
9:05
+0:43
Finish
26.22 mi14:22:283:30:598:038:07
7:58
-1:07

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

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:58

89% of race

Time at Steady Pace

11:48

6% of race

Time at Slower Pace

12:13

6% 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 mi11:16:3025:018:0325:01
8:03
#14384
10K
6.21 mi11:40:1948:507:5223:49
7:40
#13267
15K
9.32 mi12:04:221:12:537:4924:03
7:44
#12872
20K
12.43 mi12:28:451:37:167:5024:23
7:51
#12640
Half
13.11 mi12:33:581:42:297:495:13
7:39
#12556
25K
15.53 mi12:53:102:01:417:5019:12
7:55
#12477
30K
18.64 mi13:18:222:26:537:5325:12
8:07
#12305
20M
20.00 mi13:30:102:38:417:5611:48
8:41
#12502
21M
21.00 mi13:39:152:47:467:599:05
9:05
#12572
35K
21.75 mi13:45:182:53:498:006:03
8:05
#12569
23M
23.00 mi13:55:493:04:208:0110:31
8:24
#12556
24M
24.00 mi14:04:043:12:358:018:15
8:15
#12569
40K
24.85 mi14:11:133:19:448:027:09
8:22
#12569
25.2M
25.20 mi14:14:213:22:528:033:08
9:05
#12567
Finish
26.22 mi14:22:283:30:598:038:07
7:58
#12534
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi143844257425712228(Top 46%)3034(Top 27%)3034(Top 62%)
10K6.21 mi3.10 mi13267+11173604+6533604+65311963(Top 45%)2850(Top 25%)2850(Top 58%)
15K9.32 mi3.11 mi12872+3953382+2223382+22212228(Top 46%)3034(Top 27%)3034(Top 62%)
20K12.43 mi3.11 mi12640+2323281+1013281+10112170(Top 46%)3072(Top 27%)3072(Top 63%)
Half13.11 mi0.68 mi12556+843237+443237+4411503(Top 43%)2644(Top 23%)2644(Top 54%)
25K15.53 mi2.42 mi12477+793217+203217+2012072(Top 45%)3122(Top 27%)3122(Top 64%)
30K18.64 mi3.11 mi12305+1723156+613156+6111738(Top 44%)3039(Top 27%)3039(Top 62%)
20M20.00 mi1.36 mi12502-1973271-1153271-11514752(Top 55%)4852(Top 42%)4852(Top 99%)
21M21.00 mi1.00 mi12572-703338-673338-6713893(Top 52%)4426(Top 39%)4426(Top 91%)
35K21.75 mi0.75 mi12569+33349-113349-1112734(Top 48%)3841(Top 34%)3841(Top 79%)
23M23.00 mi1.25 mi12556+133358-93358-912592(Top 47%)3843(Top 34%)3843(Top 79%)
24M24.00 mi1.00 mi12569-133393-353393-3512954(Top 49%)4106(Top 36%)4106(Top 84%)
40K24.85 mi0.85 mi125693413-203413-2012487(Top 47%)3928(Top 34%)3928(Top 80%)
25.2M25.20 mi0.35 mi12567+23417-43417-413045(Top 49%)4243(Top 37%)4243(Top 87%)
Finish26.22 mi1.02 mi12534+333429-123429-1211893(Top 45%)3650(Top 32%)3650(Top 75%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21stories
+97ft-345ft

Overall

12228

Females

3034

F18-39

3034

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

11963

Females

2850

F18-39

2850

10K→15K

6.2 - 9.3 mi

Top 46%
×3stories
+67ft-78ft

Overall

12228

Females

3034

F18-39

3034

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12170

Females

3072

F18-39

3072

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

11503

Females

2644

F18-39

2644

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

12072

Females

3122

F18-39

3122

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

11738

Females

3039

F18-39

3039

30K→20M

18.6 - 20.0 mi

Top 55%
×5stories
+64ft-50ft

Overall

14752

Females

4852

F18-39

4852

20M→21M

20.0 - 21.0 mi

Top 52%
×8stories
+106ft-24ft

Overall

13893

Females

4426

F18-39

4426

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

12734

Females

3841

F18-39

3841

35K→23M

21.8 - 23.0 mi

Top 47%
×5stories
+23ft-63ft

Overall

12592

Females

3843

F18-39

3843

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

12954

Females

4106

F18-39

4106

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12487

Females

3928

F18-39

3928

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13045

Females

4243

F18-39

4243

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2stories
+22ft-21ft

Overall

11893

Females

3650

F18-39

3650

Passing Analysis

Category:
Athletes Passed
2969
Passed By
1119
Net Change
+1850
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14384
5K → 10K116144+1117#14384#13267
10K → 15K45358+395#13267#12872
15K → 20K31886+232#12872#12640
20K → Half873+84#12640#12556
Half → 25K16586+79#12556#12477
25K → 30K284112+172#12477#12305
30K → 20M49246-197#12305#12502
20M → 21M71141-70#12502#12572
21M → 35K5653+3#12572#12569
35K → 23M9178+13#12569#12556
23M → 24M6881-13#12556#12569
24M → 40K52520#12569#12569
40K → 25.2M2927+2#12569#12567
25.2M → Finish8552+33#12567#12534
TOTALS29691119+1850
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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