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BOSTON MARATHON 2023

Bryn Macgillivray

Bib: 20300•F

AZ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 44%
Division (F40-44)
#0 / 1878
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
8:30/mi
53:15
↑ 79↓ 1380.4%
15K· 9.32 mi
8:33/mi
1:19:48
↑ 67↓ 78
20K· 12.43 mi
8:37/mi
1:46:34
↑ 106↓ 860.1%
Half· 13.11 mi
8:32/mi
1:52:23
↑ 19↓ 370.5%
25K· 15.53 mi
8:36/mi
2:13:15
↑ 66↓ 880.2%
30K· 18.64 mi
8:57/mi
2:41:03
↑ 181↓ 1480.2%
20M
8:55/mi
2:53:10
↑ 64↓ 500.2%
21M
9:20/mi
3:02:30
↑ 106↓ 241.6%
35K· 21.75 mi
8:23/mi
3:08:46
↑ 17↓ 861.7%
23M
8:56/mi
3:19:57
↑ 23↓ 630.6%
24M
8:45/mi
3:28:42
↓ 821.3%
40K· 24.85 mi
8:56/mi
3:36:20
↓ 200.3%
25.2M
9:31/mi
3:39:37
↑ 13↓ 160.2%
Finish· 26.22 mi
8:36/mi
3:48:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:23
Pace8:34 /mi
2nd Half
Distance13.11 mi
Time1:56:00
Pace8:51 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3126:518:3926:51
8:39
-
10K
6.21 mi11:45:5553:158:3426:24
8:30
-0:09
15K
9.32 mi12:12:281:19:488:3426:33
8:33
+0:03
20K
12.43 mi12:39:141:46:348:3526:46
8:37
+0:04
Half
13.11 mi12:45:031:52:238:345:49
8:32
-0:05
25K
15.53 mi13:05:552:13:158:3520:52
8:36
+0:04
30K
18.64 mi13:33:432:41:038:3827:48
8:57
+0:21
20M
20.00 mi13:45:502:53:108:3912:07
8:55
-0:02
21M
21.00 mi13:55:103:02:308:419:20
9:20
+0:25
35K
21.75 mi14:01:263:08:468:416:16
8:23
-0:57
23M
23.00 mi14:12:373:19:578:4211:11
8:56
+0:33
24M
24.00 mi14:21:223:28:428:428:45
8:45
-0:11
40K
24.85 mi14:29:003:36:208:427:38
8:56
+0:11
25.2M
25.20 mi14:32:173:39:378:433:17
9:31
+0:35
Finish
26.22 mi14:41:033:48:238:438:46
8:36
-0:55

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

8:23 /mi

Average Pace

8:43 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:35:46

94% of race

Time at Steady Pace

12:37

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:43 /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 mi11:19:3126:518:3926:51
8:39
#18509
10K
6.21 mi11:45:5553:158:3426:24
8:30
#18329
15K
9.32 mi12:12:281:19:488:3426:33
8:33
#18244
20K
12.43 mi12:39:141:46:348:3526:46
8:37
#18056
Half
13.11 mi12:45:031:52:238:345:49
8:32
#18032
25K
15.53 mi13:05:552:13:158:3520:52
8:36
#17813
30K
18.64 mi13:33:432:41:038:3827:48
8:57
#17604
20M
20.00 mi13:45:502:53:108:3912:07
8:55
#17475
21M
21.00 mi13:55:103:02:308:419:20
9:20
#17319
35K
21.75 mi14:01:263:08:468:416:16
8:23
#17229
23M
23.00 mi14:12:373:19:578:4211:11
8:56
#17127
24M
24.00 mi14:21:223:28:428:428:45
8:45
#17064
40K
24.85 mi14:29:003:36:208:427:38
8:56
#17023
25.2M
25.20 mi14:32:173:39:378:433:17
9:31
#16987
Finish
26.22 mi14:41:033:48:238:438:46
8:36
#16951
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi185096874687418125(Top 68%)6573(Top 58%)6573(Top 350%)
10K6.21 mi3.10 mi18329+1806713+1616713+16118236(Top 68%)6613(Top 58%)6613(Top 352%)
15K9.32 mi3.11 mi18244+856660+536660+5318125(Top 68%)6573(Top 58%)6573(Top 350%)
20K12.43 mi3.11 mi18056+1886547+1136547+11317599(Top 66%)6287(Top 55%)6287(Top 335%)
Half13.11 mi0.68 mi18032+246532+156532+1517867(Top 67%)6396(Top 56%)6396(Top 341%)
25K15.53 mi2.42 mi17813+2196428+1046428+10416851(Top 63%)5924(Top 52%)5924(Top 315%)
30K18.64 mi3.11 mi17604+2096322+1066322+10616910(Top 64%)6015(Top 53%)6015(Top 320%)
20M20.00 mi1.36 mi17475+1296262+606262+6016117(Top 61%)5640(Top 49%)5640(Top 300%)
21M21.00 mi1.00 mi17319+1566188+746188+7415212(Top 57%)5184(Top 45%)5184(Top 276%)
35K21.75 mi0.75 mi17229+906143+456143+4514638(Top 55%)4920(Top 43%)4920(Top 262%)
23M23.00 mi1.25 mi17127+1026092+516092+5115724(Top 59%)5593(Top 49%)5593(Top 298%)
24M24.00 mi1.00 mi17064+636080+126080+1215961(Top 60%)5789(Top 51%)5789(Top 308%)
40K24.85 mi0.85 mi17023+416078+26078+215797(Top 59%)5741(Top 50%)5741(Top 306%)
25.2M25.20 mi0.35 mi16987+366064+146064+1415354(Top 58%)5515(Top 48%)5515(Top 294%)
Finish26.22 mi1.02 mi16951+366053+116053+1116025(Top 60%)5826(Top 51%)5826(Top 310%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

18125

Females

6573

F40-44

6573

5K→10K

3.1 - 6.2 mi

Top 68%
×5story building
+79ft-138ft

Overall

18236

Females

6613

F40-44

6613

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

18125

Females

6573

F40-44

6573

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

17599

Females

6287

F40-44

6287

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

17867

Females

6396

F40-44

6396

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

16851

Females

5924

F40-44

5924

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

16910

Females

6015

F40-44

6015

30K→20M

18.6 - 20.0 mi

Top 61%
×5story building
+64ft-50ft

Overall

16117

Females

5640

F40-44

5640

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

15212

Females

5184

F40-44

5184

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

14638

Females

4920

F40-44

4920

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

15724

Females

5593

F40-44

5593

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

15961

Females

5789

F40-44

5789

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15797

Females

5741

F40-44

5741

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15354

Females

5515

F40-44

5515

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

16025

Females

5826

F40-44

5826

Passing Analysis

Category:
Athletes Passed
2369
Passed By
811
Net Change
+1558
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18509
5K → 10K437257+180#18509#18329
10K → 15K224139+85#18329#18244
15K → 20K26880+188#18244#18056
20K → Half3915+24#18056#18032
Half → 25K25334+219#18032#17813
25K → 30K28374+209#17813#17604
30K → 20M15728+129#17604#17475
20M → 21M17822+156#17475#17319
21M → 35K999+90#17319#17229
35K → 23M13432+102#17229#17127
23M → 24M9532+63#17127#17064
24M → 40K7635+41#17064#17023
40K → 25.2M4610+36#17023#16987
25.2M → Finish8044+36#16987#16951
TOTALS2369811+1558
📊

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