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BOSTON MARATHON 2023

Brynn Ewen

Bib: 18738•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 46%
Masters (Masters Women)
#0 / 6539
Top 34%
Division (F45-49)
#0 / 1817
Top 40%
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
8:13/mi
25:31
↑ 97↓ 3451.5%
10K· 6.21 mi
8:07/mi
50:43
↑ 79↓ 1380.4%
15K· 9.32 mi
8:19/mi
1:16:32
↑ 67↓ 78
20K· 12.43 mi
8:18/mi
1:42:19
↑ 106↓ 860.1%
Half· 13.11 mi
8:08/mi
1:47:52
↑ 19↓ 370.5%
25K· 15.53 mi
8:15/mi
2:07:53
↑ 66↓ 880.2%
30K· 18.64 mi
8:35/mi
2:34:32
↑ 181↓ 1480.2%
20M
8:44/mi
2:46:24
↑ 64↓ 500.2%
21M
9:24/mi
2:55:48
↑ 106↓ 241.6%
35K· 21.75 mi
8:49/mi
3:02:24
↑ 17↓ 861.7%
23M
8:58/mi
3:13:38
↑ 23↓ 630.6%
24M
8:56/mi
3:22:34
↓ 821.3%
40K· 24.85 mi
9:06/mi
3:30:21
↓ 200.3%
25.2M
9:40/mi
3:33:41
↑ 13↓ 160.2%
Finish· 26.22 mi
8:27/mi
3:42:18
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:52
Pace8:14 /mi
2nd Half
Distance13.11 mi
Time1:54:26
Pace8:44 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:4325:318:1325:31
8:13
-
10K
6.21 mi11:42:5550:438:1025:12
8:07
-0:06
15K
9.32 mi12:08:441:16:328:1325:49
8:19
+0:12
20K
12.43 mi12:34:311:42:198:1425:47
8:18
-0:01
Half
13.11 mi12:40:041:47:528:145:33
8:08
-0:10
25K
15.53 mi13:00:052:07:538:1420:01
8:15
+0:07
30K
18.64 mi13:26:442:34:328:1726:39
8:35
+0:20
20M
20.00 mi13:38:362:46:248:1911:52
8:44
+0:09
21M
21.00 mi13:48:002:55:488:229:24
9:24
+0:40
35K
21.75 mi13:54:363:02:248:236:36
8:49
-0:35
23M
23.00 mi14:05:503:13:388:2511:14
8:58
+0:09
24M
24.00 mi14:14:463:22:348:268:56
8:56
-0:02
40K
24.85 mi14:22:333:30:218:287:47
9:06
+0:10
25.2M
25.20 mi14:25:533:33:418:293:20
9:40
+0:34
Finish
26.22 mi14:34:303:42:188:298:37
8:27
-1:13

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

8:07 /mi

Average Pace

8:29 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:01:37

82% of race

Time at Steady Pace

37:21

17% of race

Time at Slower Pace

3:20

1% of race

Average Pace: 8:29 /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 mi11:17:4325:318:1325:31
8:13
#15573
10K
6.21 mi11:42:5550:438:1025:12
8:07
#15563
15K
9.32 mi12:08:441:16:328:1325:49
8:19
#15909
20K
12.43 mi12:34:311:42:198:1425:47
8:18
#15806
Half
13.11 mi12:40:041:47:528:145:33
8:08
#15777
25K
15.53 mi13:00:052:07:538:1420:01
8:15
#15563
30K
18.64 mi13:26:442:34:328:1726:39
8:35
#15403
20M
20.00 mi13:38:362:46:248:1911:52
8:44
#15369
21M
21.00 mi13:48:002:55:488:229:24
9:24
#15337
35K
21.75 mi13:54:363:02:248:236:36
8:49
#15401
23M
23.00 mi14:05:503:13:388:2511:14
8:58
#15422
24M
24.00 mi14:14:463:22:348:268:56
8:56
#15490
40K
24.85 mi14:22:333:30:218:287:47
9:06
#15535
25.2M
25.20 mi14:25:533:33:418:293:20
9:40
#15558
Finish
26.22 mi14:34:303:42:188:298:37
8:27
#15516
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi155735018501816598(Top 62%)5664(Top 50%)5664(Top 312%)
10K6.21 mi3.10 mi15563+105006+125006+1215602(Top 59%)5019(Top 44%)5019(Top 276%)
15K9.32 mi3.11 mi15909-3465221-2155221-21516598(Top 62%)5664(Top 50%)5664(Top 312%)
20K12.43 mi3.11 mi15806+1035185+365185+3615611(Top 59%)5103(Top 45%)5103(Top 281%)
Half13.11 mi0.68 mi15777+295168+175168+1715395(Top 58%)4929(Top 43%)4929(Top 271%)
25K15.53 mi2.42 mi15563+2145068+1005068+10014662(Top 55%)4630(Top 41%)4630(Top 255%)
30K18.64 mi3.11 mi15403+1605022+465022+4614795(Top 56%)4813(Top 42%)4813(Top 265%)
20M20.00 mi1.36 mi15369+345010+125010+1215080(Top 57%)5047(Top 44%)5047(Top 278%)
21M21.00 mi1.00 mi15337+325016-65016-615486(Top 58%)5341(Top 47%)5341(Top 294%)
35K21.75 mi0.75 mi15401-645071-555071-5517062(Top 64%)6300(Top 55%)6300(Top 347%)
23M23.00 mi1.25 mi15422-215114-435114-4315928(Top 60%)5698(Top 50%)5698(Top 314%)
24M24.00 mi1.00 mi15490-685169-555169-5516928(Top 64%)6309(Top 55%)6309(Top 347%)
40K24.85 mi0.85 mi15535-455210-415210-4116657(Top 63%)6210(Top 54%)6210(Top 342%)
25.2M25.20 mi0.35 mi15558-235225-155225-1515991(Top 60%)5855(Top 51%)5855(Top 322%)
Finish26.22 mi1.02 mi15516+425218+75218+715156(Top 57%)5345(Top 47%)5345(Top 294%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

16598

Females

5664

F45-49

5664

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

15602

Females

5019

F45-49

5019

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

16598

Females

5664

F45-49

5664

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

15611

Females

5103

F45-49

5103

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

15395

Females

4929

F45-49

4929

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

14662

Females

4630

F45-49

4630

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

14795

Females

4813

F45-49

4813

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

15080

Females

5047

F45-49

5047

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

15486

Females

5341

F45-49

5341

21M→35K

21.0 - 21.8 mi

Top 64%
×7story building
+17ft-86ft

Overall

17062

Females

6300

F45-49

6300

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

15928

Females

5698

F45-49

5698

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

16928

Females

6309

F45-49

6309

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

16657

Females

6210

F45-49

6210

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15991

Females

5855

F45-49

5855

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

15156

Females

5345

F45-49

5345

Passing Analysis

Category:
Athletes Passed
1685
Passed By
1628
Net Change
+57
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15573
5K → 10K299289+10#15573#15563
10K → 15K86432-346#15563#15909
15K → 20K221118+103#15909#15806
20K → Half5021+29#15806#15777
Half → 25K25238+214#15777#15563
25K → 30K261101+160#15563#15403
30K → 20M9965+34#15403#15369
20M → 21M10068+32#15369#15337
21M → 35K3296-64#15337#15401
35K → 23M84105-21#15401#15422
23M → 24M47115-68#15422#15490
24M → 40K4590-45#15490#15535
40K → 25.2M2245-23#15535#15558
25.2M → Finish8745+42#15558#15516
TOTALS16851628+57
📊

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