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BOSTON MARATHON 2023

Susan Ashlock

Bib: 15018•F

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 40%
Masters (Masters Women)
#0 / 6539
Top 27%
Division (F45-49)
#0 / 1817
Top 29%
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
7:47/mi
24:10
↑ 97↓ 3451.5%
10K· 6.21 mi
7:54/mi
48:43
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:13:39
↑ 67↓ 78
20K· 12.43 mi
8:06/mi
1:38:49
↑ 106↓ 860.1%
Half· 13.11 mi
7:53/mi
1:44:12
↑ 19↓ 370.5%
25K· 15.53 mi
8:10/mi
2:03:59
↑ 66↓ 880.2%
30K· 18.64 mi
8:33/mi
2:30:34
↑ 181↓ 1480.2%
20M
8:41/mi
2:42:22
↑ 64↓ 500.2%
21M
9:08/mi
2:51:30
↑ 106↓ 241.6%
35K· 21.75 mi
8:27/mi
2:57:49
↑ 17↓ 861.7%
23M
8:50/mi
3:08:53
↑ 23↓ 630.6%
24M
8:38/mi
3:17:31
↓ 821.3%
40K· 24.85 mi
8:52/mi
3:25:06
↓ 200.3%
25.2M
9:31/mi
3:28:23
↑ 13↓ 160.2%
Finish· 26.22 mi
9:09/mi
3:37:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:12
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:53:30
Pace8:39 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:1724:107:4724:10
7:47
-
10K
6.21 mi11:18:5048:437:5024:33
7:54
+0:07
15K
9.32 mi11:43:461:13:397:5424:56
8:02
+0:08
20K
12.43 mi12:08:561:38:497:5725:10
8:06
+0:04
Half
13.11 mi12:14:191:44:127:575:23
7:53
-0:13
25K
15.53 mi12:34:062:03:597:5919:47
8:10
+0:17
30K
18.64 mi13:00:412:30:348:0526:35
8:33
+0:23
20M
20.00 mi13:12:292:42:228:0711:48
8:41
+0:08
21M
21.00 mi13:21:372:51:308:109:08
9:08
+0:27
35K
21.75 mi13:27:562:57:498:116:19
8:27
-0:41
23M
23.00 mi13:39:003:08:538:1311:04
8:50
+0:23
24M
24.00 mi13:47:383:17:318:148:38
8:38
-0:12
40K
24.85 mi13:55:133:25:068:157:35
8:52
+0:14
25.2M
25.20 mi13:58:303:28:238:163:17
9:31
+0:39
Finish
26.22 mi14:07:493:37:428:199:19
9:09
-0:22

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

7:47 /mi

Average Pace

8:19 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:59

57% of race

Time at Steady Pace

53:20

24% of race

Time at Slower Pace

40:23

19% of race

Average Pace: 8:18 /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 mi10:54:1724:107:4724:10
7:47
#12182
10K
6.21 mi11:18:5048:437:5024:33
7:54
#13106
15K
9.32 mi11:43:461:13:397:5424:56
8:02
#13596
20K
12.43 mi12:08:561:38:497:5725:10
8:06
#13714
Half
13.11 mi12:14:191:44:127:575:23
7:53
#13697
25K
15.53 mi12:34:062:03:597:5919:47
8:10
#13730
30K
18.64 mi13:00:412:30:348:0526:35
8:33
#13919
20M
20.00 mi13:12:292:42:228:0711:48
8:41
#13985
21M
21.00 mi13:21:372:51:308:109:08
9:08
#13963
35K
21.75 mi13:27:562:57:498:116:19
8:27
#13989
23M
23.00 mi13:39:003:08:538:1311:04
8:50
#14040
24M
24.00 mi13:47:383:17:318:148:38
8:38
#14100
40K
24.85 mi13:55:133:25:068:157:35
8:52
#14150
25.2M
25.20 mi13:58:303:28:238:163:17
9:31
#14168
Finish
26.22 mi14:07:493:37:428:199:19
9:09
#14368
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi121822972297214604(Top 55%)4447(Top 39%)4447(Top 245%)
10K6.21 mi3.10 mi13106-9243512-5403512-54014023(Top 53%)4062(Top 36%)4062(Top 224%)
15K9.32 mi3.11 mi13596-4903816-3043816-30414604(Top 55%)4447(Top 39%)4447(Top 245%)
20K12.43 mi3.11 mi13714-1183917-1013917-10114241(Top 53%)4253(Top 37%)4253(Top 234%)
Half13.11 mi0.68 mi13697+173905+123905+1213578(Top 51%)3854(Top 34%)3854(Top 212%)
25K15.53 mi2.42 mi13730-333944-393944-3913962(Top 52%)4198(Top 37%)4198(Top 231%)
30K18.64 mi3.11 mi13919-1894094-1504094-15014654(Top 55%)4721(Top 41%)4721(Top 260%)
20M20.00 mi1.36 mi13985-664157-634157-6314760(Top 55%)4860(Top 43%)4860(Top 267%)
21M21.00 mi1.00 mi13963+224162-54162-514141(Top 53%)4561(Top 40%)4561(Top 251%)
35K21.75 mi0.75 mi13989-264192-304192-3014989(Top 56%)5094(Top 45%)5094(Top 280%)
23M23.00 mi1.25 mi14040-514252-604252-6015203(Top 57%)5284(Top 46%)5284(Top 291%)
24M24.00 mi1.00 mi14100-604309-574309-5715272(Top 57%)5384(Top 47%)5384(Top 296%)
40K24.85 mi0.85 mi14150-504365-564365-5615464(Top 58%)5558(Top 49%)5558(Top 306%)
25.2M25.20 mi0.35 mi14168-184385-204385-2015312(Top 58%)5473(Top 48%)5473(Top 301%)
Finish26.22 mi1.02 mi14368-2004525-1404525-14018654(Top 70%)7247(Top 63%)7247(Top 399%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14604

Females

4447

F45-49

4447

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14023

Females

4062

F45-49

4062

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14604

Females

4447

F45-49

4447

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

14241

Females

4253

F45-49

4253

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

13578

Females

3854

F45-49

3854

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

13962

Females

4198

F45-49

4198

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

14654

Females

4721

F45-49

4721

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14760

Females

4860

F45-49

4860

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

14141

Females

4561

F45-49

4561

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

14989

Females

5094

F45-49

5094

35K→23M

21.8 - 23.0 mi

Top 57%
×5story building
+23ft-63ft

Overall

15203

Females

5284

F45-49

5284

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

15272

Females

5384

F45-49

5384

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

15464

Females

5558

F45-49

5558

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15312

Females

5473

F45-49

5473

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2story building
+22ft-21ft

Overall

18654

Females

7247

F45-49

7247

Passing Analysis

Category:
Athletes Passed
1014
Passed By
3200
Net Change
-2186
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12182
5K → 10K72996-924#12182#13106
10K → 15K64554-490#13106#13596
15K → 20K148266-118#13596#13714
20K → Half3922+17#13714#13697
Half → 25K128161-33#13697#13730
25K → 30K128317-189#13730#13919
30K → 20M73139-66#13919#13985
20M → 21M10684+22#13985#13963
21M → 35K4066-26#13963#13989
35K → 23M67118-51#13989#14040
23M → 24M46106-60#14040#14100
24M → 40K57107-50#14100#14150
40K → 25.2M2341-18#14150#14168
25.2M → Finish23223-200#14168#14368
TOTALS10143200-2186
📊

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