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BOSTON MARATHON 2023

Julie Sherwood

Bib: 20471•F

AZ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
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
8:20/mi
25:54
↑ 97↓ 3451.5%
10K· 6.21 mi
8:23/mi
51:56
↑ 79↓ 1380.4%
15K· 9.32 mi
8:28/mi
1:18:14
↑ 67↓ 78
20K· 12.43 mi
8:38/mi
1:45:04
↑ 106↓ 860.1%
Half· 13.11 mi
8:32/mi
1:50:53
↑ 19↓ 370.5%
25K· 15.53 mi
8:51/mi
2:12:21
↑ 66↓ 880.2%
30K· 18.64 mi
9:25/mi
2:41:35
↑ 181↓ 1480.2%
20M
9:32/mi
2:54:32
↑ 64↓ 500.2%
21M
9:59/mi
3:04:31
↑ 106↓ 241.6%
35K· 21.75 mi
9:09/mi
3:11:22
↑ 17↓ 861.7%
23M
9:37/mi
3:23:25
↑ 23↓ 630.6%
24M
9:19/mi
3:32:44
↓ 821.3%
40K· 24.85 mi
9:37/mi
3:40:57
↓ 200.3%
25.2M
10:06/mi
3:44:26
↑ 13↓ 160.2%
Finish· 26.22 mi
9:06/mi
3:53:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:53
Pace8:27 /mi
2nd Half
Distance13.11 mi
Time2:02:49
Pace9:22 /mi
📊Positive Split: 10.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0125:548:2025:54
8:20
-
10K
6.21 mi11:44:0351:568:2126:02
8:23
+0:03
15K
9.32 mi12:10:211:18:148:2426:18
8:28
+0:05
20K
12.43 mi12:37:111:45:048:2726:50
8:38
+0:10
Half
13.11 mi12:43:001:50:538:275:49
8:32
-0:06
25K
15.53 mi13:04:282:12:218:3121:28
8:51
+0:19
30K
18.64 mi13:33:422:41:358:4029:14
9:25
+0:34
20M
20.00 mi13:46:392:54:328:4412:57
9:32
+0:07
21M
21.00 mi13:56:383:04:318:479:59
9:59
+0:27
35K
21.75 mi14:03:293:11:228:486:51
9:09
-0:50
23M
23.00 mi14:15:323:23:258:5112:03
9:37
+0:28
24M
24.00 mi14:24:513:32:448:529:19
9:19
-0:18
40K
24.85 mi14:33:043:40:578:538:13
9:37
+0:18
25.2M
25.20 mi14:36:333:44:268:543:29
10:06
+0:29
Finish
26.22 mi14:45:493:53:428:559:16
9:06
-1:00

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

8:20 /mi

Average Pace

8:55 /mi

Slowest Pace

10:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:12:21

57% of race

Time at Steady Pace

54:40

23% of race

Time at Slower Pace

46:41

20% of race

Average Pace: 8:55 /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 mi11:18:0125:548:2025:54
8:20
#16411
10K
6.21 mi11:44:0351:568:2126:02
8:23
#16915
15K
9.32 mi12:10:211:18:148:2426:18
8:28
#17162
20K
12.43 mi12:37:111:45:048:2726:50
8:38
#17285
Half
13.11 mi12:43:001:50:538:275:49
8:32
#17319
25K
15.53 mi13:04:282:12:218:3121:28
8:51
#17454
30K
18.64 mi13:33:422:41:358:4029:14
9:25
#17765
20M
20.00 mi13:46:392:54:328:4412:57
9:32
#17889
21M
21.00 mi13:56:383:04:318:479:59
9:59
#17908
35K
21.75 mi14:03:293:11:228:486:51
9:09
#17940
23M
23.00 mi14:15:323:23:258:5112:03
9:37
#18026
24M
24.00 mi14:24:513:32:448:529:19
9:19
#18056
40K
24.85 mi14:33:043:40:578:538:13
9:37
#18101
25.2M
25.20 mi14:36:333:44:268:543:29
10:06
#18106
Finish
26.22 mi14:45:493:53:428:559:16
9:06
#18129
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi164115546554617581(Top 66%)6262(Top 55%)6262(Top 345%)
10K6.21 mi3.10 mi16915-5045858-3125858-31217470(Top 66%)6168(Top 54%)6168(Top 339%)
15K9.32 mi3.11 mi17162-2476007-1496007-14917581(Top 66%)6262(Top 55%)6262(Top 345%)
20K12.43 mi3.11 mi17285-1236101-946101-9417734(Top 67%)6364(Top 56%)6364(Top 350%)
Half13.11 mi0.68 mi17319-346114-136114-1317899(Top 67%)6428(Top 56%)6428(Top 354%)
25K15.53 mi2.42 mi17454-1356212-986212-9818253(Top 69%)6697(Top 59%)6697(Top 369%)
30K18.64 mi3.11 mi17765-3116414-2026414-20219084(Top 72%)7239(Top 63%)7239(Top 398%)
20M20.00 mi1.36 mi17889-1246518-1046518-10418979(Top 71%)7285(Top 64%)7285(Top 401%)
21M21.00 mi1.00 mi17908-196536-186536-1817985(Top 68%)6750(Top 59%)6750(Top 371%)
35K21.75 mi0.75 mi17940-326564-286564-2818578(Top 70%)7147(Top 63%)7147(Top 393%)
23M23.00 mi1.25 mi18026-866622-586622-5818835(Top 71%)7309(Top 64%)7309(Top 402%)
24M24.00 mi1.00 mi18056-306665-436665-4318540(Top 70%)7191(Top 63%)7191(Top 396%)
40K24.85 mi0.85 mi18101-456697-326697-3218737(Top 70%)7346(Top 64%)7346(Top 404%)
25.2M25.20 mi0.35 mi18106-56704-76704-717814(Top 67%)6864(Top 60%)6864(Top 378%)
Finish26.22 mi1.02 mi18129-236727-236727-2318448(Top 69%)7144(Top 63%)7144(Top 393%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

17581

Females

6262

F45-49

6262

5K→10K

3.1 - 6.2 mi

Top 66%
×5story building
+79ft-138ft

Overall

17470

Females

6168

F45-49

6168

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

17581

Females

6262

F45-49

6262

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

17734

Females

6364

F45-49

6364

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

17899

Females

6428

F45-49

6428

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

18253

Females

6697

F45-49

6697

25K→30K

15.5 - 18.6 mi

Top 72%
×9story building
+181ft-148ft

Overall

19084

Females

7239

F45-49

7239

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

18979

Females

7285

F45-49

7285

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

17985

Females

6750

F45-49

6750

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

18578

Females

7147

F45-49

7147

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

18835

Females

7309

F45-49

7309

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

18540

Females

7191

F45-49

7191

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18737

Females

7346

F45-49

7346

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

17814

Females

6864

F45-49

6864

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18448

Females

7144

F45-49

7144

Passing Analysis

Category:
Athletes Passed
926
Passed By
2644
Net Change
-1718
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16411
5K → 10K124628-504#16411#16915
10K → 15K102349-247#16915#17162
15K → 20K129252-123#17162#17285
20K → Half2155-34#17285#17319
Half → 25K92227-135#17319#17454
25K → 30K86397-311#17454#17765
30K → 20M59183-124#17765#17889
20M → 21M7493-19#17889#17908
21M → 35K3163-32#17908#17940
35K → 23M57143-86#17940#18026
23M → 24M4676-30#18026#18056
24M → 40K3681-45#18056#18101
40K → 25.2M2025-5#18101#18106
25.2M → Finish4972-23#18106#18129
TOTALS9262644-1718
📊

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