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BOSTON MARATHON 2023

Natasha Rowden

Bib: 22425•F

AB

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 49%
Masters (Masters Women)
#0 / 6539
Top 38%
Division (F45-49)
#0 / 1817
Top 45%
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
8:39/mi
26:51
↑ 97↓ 3451.5%
10K· 6.21 mi
8:21/mi
52:47
↑ 79↓ 1380.4%
15K· 9.32 mi
8:22/mi
1:18:46
↑ 67↓ 78
20K· 12.43 mi
8:31/mi
1:45:15
↑ 106↓ 860.1%
Half· 13.11 mi
8:30/mi
1:51:03
↑ 19↓ 370.5%
25K· 15.53 mi
8:28/mi
2:11:34
↑ 66↓ 880.2%
30K· 18.64 mi
8:47/mi
2:38:50
↑ 181↓ 1480.2%
20M
8:48/mi
2:50:47
↑ 64↓ 500.2%
21M
9:11/mi
2:59:58
↑ 106↓ 241.6%
35K· 21.75 mi
8:19/mi
3:06:11
↑ 17↓ 861.7%
23M
8:34/mi
3:16:54
↑ 23↓ 630.6%
24M
8:26/mi
3:25:20
↓ 821.3%
40K· 24.85 mi
8:28/mi
3:32:34
↓ 200.3%
25.2M
9:31/mi
3:35:51
↑ 13↓ 160.2%
Finish· 26.22 mi
8:39/mi
3:44:40
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:03
Pace8:28 /mi
2nd Half
Distance13.11 mi
Time1:53:37
Pace8:40 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:5126:518:3926:51
8:39
-
10K
6.21 mi11:48:4752:478:3025:56
8:21
-0:18
15K
9.32 mi12:14:461:18:468:2725:59
8:22
+0:01
20K
12.43 mi12:41:151:45:158:2826:29
8:31
+0:09
Half
13.11 mi12:47:031:51:038:285:48
8:30
-0:01
25K
15.53 mi13:07:342:11:348:2820:31
8:28
-0:02
30K
18.64 mi13:34:502:38:508:3127:16
8:47
+0:19
20M
20.00 mi13:46:472:50:478:3211:57
8:48
+0:01
21M
21.00 mi13:55:582:59:588:349:11
9:11
+0:23
35K
21.75 mi14:02:113:06:118:346:13
8:19
-0:52
23M
23.00 mi14:12:543:16:548:3410:43
8:34
+0:15
24M
24.00 mi14:21:203:25:208:338:26
8:26
-0:08
40K
24.85 mi14:28:343:32:348:337:14
8:28
+0:02
25.2M
25.20 mi14:31:513:35:518:343:17
9:31
+1:03
Finish
26.22 mi14:40:403:44:408:358:49
8:39
-0:52

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

8:19 /mi

Average Pace

8:35 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:32:12

94% of race

Time at Steady Pace

12:28

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:34 /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 mi11:22:5126:518:3926:51
8:39
#18506
10K
6.21 mi11:48:4752:478:3025:56
8:21
#17880
15K
9.32 mi12:14:461:18:468:2725:59
8:22
#17528
20K
12.43 mi12:41:151:45:158:2826:29
8:31
#17372
Half
13.11 mi12:47:031:51:038:285:48
8:30
#17375
25K
15.53 mi13:07:342:11:348:2820:31
8:28
#17155
30K
18.64 mi13:34:502:38:508:3127:16
8:47
#16897
20M
20.00 mi13:46:472:50:478:3211:57
8:48
#16772
21M
21.00 mi13:55:582:59:588:349:11
9:11
#16615
35K
21.75 mi14:02:113:06:118:346:13
8:19
#16524
23M
23.00 mi14:12:543:16:548:3410:43
8:34
#16340
24M
24.00 mi14:21:203:25:208:338:26
8:26
#16210
40K
24.85 mi14:28:343:32:348:337:14
8:28
#16096
25.2M
25.20 mi14:31:513:35:518:343:17
9:31
#16075
Finish
26.22 mi14:40:403:44:408:358:49
8:39
#16092
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi185066871687116940(Top 64%)5870(Top 51%)5870(Top 323%)
10K6.21 mi3.10 mi17880+6266454+4176454+41717231(Top 65%)6020(Top 53%)6020(Top 331%)
15K9.32 mi3.11 mi17528+3526226+2286226+22816940(Top 64%)5870(Top 51%)5870(Top 323%)
20K12.43 mi3.11 mi17372+1566142+846142+8417016(Top 64%)5931(Top 52%)5931(Top 326%)
Half13.11 mi0.68 mi17375-36145-36145-317724(Top 67%)6302(Top 55%)6302(Top 347%)
25K15.53 mi2.42 mi17155+2206036+1096036+10915983(Top 60%)5434(Top 48%)5434(Top 299%)
30K18.64 mi3.11 mi16897+2585895+1415895+14115917(Top 60%)5451(Top 48%)5451(Top 300%)
20M20.00 mi1.36 mi16772+1255850+455850+4515416(Top 58%)5226(Top 46%)5226(Top 288%)
21M21.00 mi1.00 mi16615+1575768+825768+8214426(Top 54%)4731(Top 41%)4731(Top 260%)
35K21.75 mi0.75 mi16524+915730+385730+3814210(Top 53%)4690(Top 41%)4690(Top 258%)
23M23.00 mi1.25 mi16340+1845640+905640+9013620(Top 51%)4415(Top 39%)4415(Top 243%)
24M24.00 mi1.00 mi16210+1305583+575583+5714123(Top 53%)4750(Top 42%)4750(Top 261%)
40K24.85 mi0.85 mi16096+1145526+575526+5713128(Top 49%)4284(Top 38%)4284(Top 236%)
25.2M25.20 mi0.35 mi16075+215516+105516+1015339(Top 58%)5500(Top 48%)5500(Top 303%)
Finish26.22 mi1.02 mi16092-175543-275543-2716275(Top 61%)5982(Top 52%)5982(Top 329%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

16940

Females

5870

F45-49

5870

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

17231

Females

6020

F45-49

6020

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

16940

Females

5870

F45-49

5870

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

17016

Females

5931

F45-49

5931

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

17724

Females

6302

F45-49

6302

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

15983

Females

5434

F45-49

5434

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

15917

Females

5451

F45-49

5451

30K→20M

18.6 - 20.0 mi

Top 58%
×5story building
+64ft-50ft

Overall

15416

Females

5226

F45-49

5226

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

14426

Females

4731

F45-49

4731

21M→35K

21.0 - 21.8 mi

Top 53%
×7story building
+17ft-86ft

Overall

14210

Females

4690

F45-49

4690

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13620

Females

4415

F45-49

4415

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

14123

Females

4750

F45-49

4750

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13128

Females

4284

F45-49

4284

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15339

Females

5500

F45-49

5500

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

16275

Females

5982

F45-49

5982

Passing Analysis

Category:
Athletes Passed
2999
Passed By
585
Net Change
+2414
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18506
5K → 10K763137+626#18506#17880
10K → 15K42068+352#17880#17528
15K → 20K24387+156#17528#17372
20K → Half2730-3#17372#17375
Half → 25K25030+220#17375#17155
25K → 30K30749+258#17155#16897
30K → 20M15025+125#16897#16772
20M → 21M17720+157#16772#16615
21M → 35K10413+91#16615#16524
35K → 23M1906+184#16524#16340
23M → 24M14414+130#16340#16210
24M → 40K13016+114#16210#16096
40K → 25.2M3413+21#16096#16075
25.2M → Finish6077-17#16075#16092
TOTALS2999585+2414
📊

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