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BOSTON MARATHON 2023

Natasha Barton

Bib: 21606•F

GA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 42%
Masters (Masters Women)
#0 / 6539
Top 30%
Division (F45-49)
#0 / 1817
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:55
Rank: #14170
Start → 5K
24:55 | 8:01/mi
10K· 6.21 mi
49:53
Rank: #14584 (-414)
5K → 10K
24:58 | 8:02/mi
15K· 9.32 mi
1:14:42
Rank: #14459 (+125)
10K → 15K
24:49 | 7:59/mi
20K· 12.43 mi
1:40:00
Rank: #14449 (+10)
15K → 20K
25:18 | 8:09/mi
Half· 13.11 mi
1:45:28
Rank: #14473 (-24)
20K → Half
5:28 | 8:01/mi
25K· 15.53 mi
2:05:20
Rank: #14418 (+55)
Half → 25K
19:52 | 8:12/mi
30K· 18.64 mi
2:32:08
Rank: #14535 (-117)
25K → 30K
26:48 | 8:38/mi
20M
2:44:08
Rank: #14608 (-73)
30K → 20M
12:00 | 8:50/mi
21M
2:53:28
Rank: #14630 (-22)
20M → 21M
9:20 | 9:20/mi
35K· 21.75 mi
2:59:55
Rank: #14665 (-35)
21M → 35K
6:27 | 8:37/mi
23M
3:11:00
Rank: #14702 (-37)
35K → 23M
11:05 | 8:51/mi
24M
3:19:43
Rank: #14725 (-23)
23M → 24M
8:43 | 8:43/mi
40K· 24.85 mi
3:27:22
Rank: #14731 (-6)
24M → 40K
7:39 | 8:57/mi
25.2M
3:30:37
Rank: #14729 (+2)
40K → 25.2M
3:15 | 9:25/mi
Finish· 26.22 mi
3:39:28
Rank: #14808 (-79)
25.2M → Finish
8:51 | 8:41/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:28
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:54:00
Pace8:42 /mi
📊Positive Split: 8.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:2124:558:0124:55
8:01
-
10K
6.21 mi11:47:1949:538:0224:58
8:02
+0:01
15K
9.32 mi12:12:081:14:428:0124:49
7:59
-0:03
20K
12.43 mi12:37:261:40:008:0325:18
8:09
+0:10
Half
13.11 mi12:42:541:45:288:035:28
8:01
-0:08
25K
15.53 mi13:02:462:05:208:0419:52
8:12
+0:11
30K
18.64 mi13:29:342:32:088:1026:48
8:38
+0:26
20M
20.00 mi13:41:342:44:088:1212:00
8:50
+0:12
21M
21.00 mi13:50:542:53:288:169:20
9:20
+0:30
35K
21.75 mi13:57:212:59:558:166:27
8:37
-0:43
23M
23.00 mi14:08:263:11:008:1811:05
8:51
+0:14
24M
24.00 mi14:17:093:19:438:198:43
8:43
-0:08
40K
24.85 mi14:24:483:27:228:217:39
8:57
+0:14
25.2M
25.20 mi14:28:033:30:378:213:15
9:25
+0:28
Finish
26.22 mi14:36:543:39:288:238:51
8:41
-0:44

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

7:59 /mi

Average Pace

8:23 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:09

80% of race

Time at Steady Pace

43:19

20% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:22 /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 mi11:22:2124:558:0124:55
8:01
#14170
10K
6.21 mi11:47:1949:538:0224:58
8:02
#14584
15K
9.32 mi12:12:081:14:428:0124:49
7:59
#14459
20K
12.43 mi12:37:261:40:008:0325:18
8:09
#14449
Half
13.11 mi12:42:541:45:288:035:28
8:01
#14473
25K
15.53 mi13:02:462:05:208:0419:52
8:12
#14418
30K
18.64 mi13:29:342:32:088:1026:48
8:38
#14535
20M
20.00 mi13:41:342:44:088:1212:00
8:50
#14608
21M
21.00 mi13:50:542:53:288:169:20
9:20
#14630
35K
21.75 mi13:57:212:59:558:166:27
8:37
#14665
23M
23.00 mi14:08:263:11:008:1811:05
8:51
#14702
24M
24.00 mi14:17:093:19:438:198:43
8:43
#14725
40K
24.85 mi14:24:483:27:228:217:39
8:57
#14731
25.2M
25.20 mi14:28:033:30:378:213:15
9:25
#14729
Finish
26.22 mi14:36:543:39:288:238:51
8:41
#14808
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi141704131413114312(Top 54%)4269(Top 37%)4269(Top 235%)
10K6.21 mi3.10 mi14584-4144395-2644395-26415082(Top 57%)4719(Top 41%)4719(Top 260%)
15K9.32 mi3.11 mi14459+1254333+624333+6214312(Top 54%)4269(Top 37%)4269(Top 235%)
20K12.43 mi3.11 mi14449+104341-84341-814560(Top 55%)4440(Top 39%)4440(Top 244%)
Half13.11 mi0.68 mi14473-244358-174358-1714564(Top 55%)4433(Top 39%)4433(Top 244%)
25K15.53 mi2.42 mi14418+554357+14357+114203(Top 53%)4343(Top 38%)4343(Top 239%)
30K18.64 mi3.11 mi14535-1174468-1114468-11115073(Top 57%)4976(Top 44%)4976(Top 274%)
20M20.00 mi1.36 mi14608-734532-644532-6415613(Top 59%)5335(Top 47%)5335(Top 294%)
21M21.00 mi1.00 mi14630-224565-334565-3315193(Top 57%)5165(Top 45%)5165(Top 284%)
35K21.75 mi0.75 mi14665-354607-424607-4215986(Top 60%)5676(Top 50%)5676(Top 312%)
23M23.00 mi1.25 mi14702-374654-474654-4715296(Top 57%)5336(Top 47%)5336(Top 294%)
24M24.00 mi1.00 mi14725-234693-394693-3915762(Top 59%)5675(Top 50%)5675(Top 312%)
40K24.85 mi0.85 mi14731-64720-274720-2715881(Top 60%)5779(Top 51%)5779(Top 318%)
25.2M25.20 mi0.35 mi14729+24731-114731-1114858(Top 56%)5216(Top 46%)5216(Top 287%)
Finish26.22 mi1.02 mi14808-794792-614792-6116407(Top 62%)6044(Top 53%)6044(Top 333%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21stories
+97ft-345ft

Overall

14312

Females

4269

F45-49

4269

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

15082

Females

4719

F45-49

4719

10K→15K

6.2 - 9.3 mi

Top 54%
×3stories
+67ft-78ft

Overall

14312

Females

4269

F45-49

4269

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

14560

Females

4440

F45-49

4440

20K→Half

12.4 - 13.1 mi

Top 55%
×2stories
+19ft-37ft

Overall

14564

Females

4433

F45-49

4433

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

14203

Females

4343

F45-49

4343

25K→30K

15.5 - 18.6 mi

Top 57%
×9stories
+181ft-148ft

Overall

15073

Females

4976

F45-49

4976

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

15613

Females

5335

F45-49

5335

20M→21M

20.0 - 21.0 mi

Top 57%
×8stories
+106ft-24ft

Overall

15193

Females

5165

F45-49

5165

21M→35K

21.0 - 21.8 mi

Top 60%
×7stories
+17ft-86ft

Overall

15986

Females

5676

F45-49

5676

35K→23M

21.8 - 23.0 mi

Top 57%
×5stories
+23ft-63ft

Overall

15296

Females

5336

F45-49

5336

23M→24M

23.0 - 24.0 mi

Top 59%
×6stories
+12ft-82ft

Overall

15762

Females

5675

F45-49

5675

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

15881

Females

5779

F45-49

5779

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

14858

Females

5216

F45-49

5216

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2stories
+22ft-21ft

Overall

16407

Females

6044

F45-49

6044

Passing Analysis

Category:
Athletes Passed
1316
Passed By
1954
Net Change
-638
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14170
5K → 10K131545-414#14170#14584
10K → 15K248123+125#14584#14459
15K → 20K186176+10#14459#14449
20K → Half2347-24#14449#14473
Half → 25K171116+55#14473#14418
25K → 30K126243-117#14418#14535
30K → 20M73146-73#14535#14608
20M → 21M7799-22#14608#14630
21M → 35K3772-35#14630#14665
35K → 23M5996-37#14665#14702
23M → 24M6386-23#14702#14725
24M → 40K6167-6#14725#14731
40K → 25.2M3129+2#14731#14729
25.2M → Finish30109-79#14729#14808
TOTALS13161954-638
📊

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