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BOSTON MARATHON 2023

Barbara Ann Mcgrain

Bib: 15245•F

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 40%
Gender (Female)
#0 / 11423
Top 21%
Masters (Masters Women)
#0 / 6539
Top 10%
Division (F45-49)
#0 / 1817
Top 10%
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
8:00/mi
24:51
↑ 97↓ 3451.5%
10K· 6.21 mi
7:55/mi
49:26
↑ 79↓ 1380.4%
15K· 9.32 mi
7:43/mi
1:13:24
↑ 67↓ 78
20K· 12.43 mi
7:56/mi
1:38:04
↑ 106↓ 860.1%
Half· 13.11 mi
7:43/mi
1:43:20
↑ 19↓ 370.5%
25K· 15.53 mi
7:51/mi
2:02:22
↑ 66↓ 880.2%
30K· 18.64 mi
7:52/mi
2:26:49
↑ 181↓ 1480.2%
20M
7:55/mi
2:37:34
↑ 64↓ 500.2%
21M
8:09/mi
2:45:43
↑ 106↓ 241.6%
35K· 21.75 mi
7:33/mi
2:51:22
↑ 17↓ 861.7%
23M
7:43/mi
3:01:02
↑ 23↓ 630.6%
24M
7:28/mi
3:08:30
↓ 821.3%
40K· 24.85 mi
7:38/mi
3:15:02
↓ 200.3%
25.2M
8:01/mi
3:17:48
↑ 13↓ 160.2%
Finish· 26.22 mi
7:14/mi
3:25:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:43:20
Pace7:53 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:41:50
Pace7:46 /mi
📊Negative Split: 1.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:2324:518:0024:51
8:00
-
10K
6.21 mi11:39:5849:267:5724:35
7:55
-0:05
15K
9.32 mi12:03:561:13:247:5323:58
7:43
-0:12
20K
12.43 mi12:28:361:38:047:5324:40
7:56
+0:13
Half
13.11 mi12:33:521:43:207:535:16
7:43
-0:13
25K
15.53 mi12:52:542:02:227:5319:02
7:51
+0:08
30K
18.64 mi13:17:212:26:497:5324:27
7:52
+0:01
20M
20.00 mi13:28:062:37:347:5310:45
7:55
+0:03
21M
21.00 mi13:36:152:45:437:538:09
8:09
+0:14
35K
21.75 mi13:41:542:51:227:535:39
7:33
-0:36
23M
23.00 mi13:51:343:01:027:529:40
7:43
+0:10
24M
24.00 mi13:59:023:08:307:517:28
7:28
-0:15
40K
24.85 mi14:05:343:15:027:516:32
7:38
+0:10
25.2M
25.20 mi14:08:203:17:487:512:46
8:01
+0:23
Finish
26.22 mi14:15:423:25:107:507:22
7:14
-0:47

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

7:14 /mi

Average Pace

7:50 /mi

Slowest Pace

8:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:24

83% of race

Time at Steady Pace

35:46

17% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:49 /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 mi11:15:2324:518:0024:51
8:00
#14005
10K
6.21 mi11:39:5849:267:5724:35
7:55
#14036
15K
9.32 mi12:03:561:13:247:5323:58
7:43
#13366
20K
12.43 mi12:28:361:38:047:5324:40
7:56
#13237
Half
13.11 mi12:33:521:43:207:535:16
7:43
#13158
25K
15.53 mi12:52:542:02:227:5319:02
7:51
#12838
30K
18.64 mi13:17:212:26:497:5324:27
7:52
#12265
20M
20.00 mi13:28:062:37:347:5310:45
7:55
#12030
21M
21.00 mi13:36:152:45:437:538:09
8:09
#11788
35K
21.75 mi13:41:542:51:227:535:39
7:33
#11669
23M
23.00 mi13:51:343:01:027:529:40
7:43
#11404
24M
24.00 mi13:59:023:08:307:517:28
7:28
#11189
40K
24.85 mi14:05:343:15:027:516:32
7:38
#11019
25.2M
25.20 mi14:08:203:17:487:512:46
8:01
#10924
Finish
26.22 mi14:15:423:25:107:507:22
7:14
#10709
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi140054031403111968(Top 45%)2879(Top 25%)2879(Top 158%)
10K6.21 mi3.10 mi14036-314061-304061-3014078(Top 53%)4092(Top 36%)4092(Top 225%)
15K9.32 mi3.11 mi13366+6703669+3923669+39211968(Top 45%)2879(Top 25%)2879(Top 158%)
20K12.43 mi3.11 mi13237+1293627+423627+4212938(Top 49%)3507(Top 31%)3507(Top 193%)
Half13.11 mi0.68 mi13158+793575+523575+5212054(Top 45%)2932(Top 26%)2932(Top 161%)
25K15.53 mi2.42 mi12838+3203422+1533422+15311524(Top 43%)2779(Top 24%)2779(Top 153%)
30K18.64 mi3.11 mi12265+5733135+2873135+2879919(Top 37%)2122(Top 19%)2122(Top 117%)
20M20.00 mi1.36 mi12030+2353021+1143021+1149660(Top 36%)2095(Top 18%)2095(Top 115%)
21M21.00 mi1.00 mi11788+2422894+1272894+1278347(Top 31%)1673(Top 15%)1673(Top 92%)
35K21.75 mi0.75 mi11669+1192837+572837+578990(Top 34%)1927(Top 17%)1927(Top 106%)
23M23.00 mi1.25 mi11404+2652720+1172720+1177907(Top 30%)1554(Top 14%)1554(Top 86%)
24M24.00 mi1.00 mi11189+2152618+1022618+1027525(Top 28%)1508(Top 13%)1508(Top 83%)
40K24.85 mi0.85 mi11019+1702562+562562+567611(Top 29%)1618(Top 14%)1618(Top 89%)
25.2M25.20 mi0.35 mi10924+952529+332529+336758(Top 25%)1344(Top 12%)1344(Top 74%)
Finish26.22 mi1.02 mi10709+2152452+772452+776659(Top 25%)1310(Top 11%)1310(Top 72%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21story building
+97ft-345ft

Overall

11968

Females

2879

F45-49

2879

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14078

Females

4092

F45-49

4092

10K→15K

6.2 - 9.3 mi

Top 45%
×3story building
+67ft-78ft

Overall

11968

Females

2879

F45-49

2879

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

12938

Females

3507

F45-49

3507

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12054

Females

2932

F45-49

2932

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

11524

Females

2779

F45-49

2779

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

9919

Females

2122

F45-49

2122

30K→20M

18.6 - 20.0 mi

Top 36%
×5story building
+64ft-50ft

Overall

9660

Females

2095

F45-49

2095

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8347

Females

1673

F45-49

1673

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

8990

Females

1927

F45-49

1927

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

7907

Females

1554

F45-49

1554

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

7525

Females

1508

F45-49

1508

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7611

Females

1618

F45-49

1618

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6758

Females

1344

F45-49

1344

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2story building
+22ft-21ft

Overall

6659

Females

1310

F45-49

1310

Passing Analysis

Category:
Athletes Passed
3811
Passed By
515
Net Change
+3296
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14005
5K → 10K268299-31#14005#14036
10K → 15K68818+670#14036#13366
15K → 20K248119+129#13366#13237
20K → Half845+79#13237#13158
Half → 25K34020+320#13158#12838
25K → 30K58310+573#12838#12265
30K → 20M24510+235#12265#12030
20M → 21M2508+242#12030#11788
21M → 35K1267+119#11788#11669
35K → 23M2738+265#11669#11404
23M → 24M2161+215#11404#11189
24M → 40K1766+170#11189#11019
40K → 25.2M961+95#11019#10924
25.2M → Finish2183+215#10924#10709
TOTALS3811515+3296
📊

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