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BOSTON MARATHON 2023

Susan Freeman

Bib: 21578•F

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
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
9:01/mi
28:01
↑ 97↓ 3451.5%
10K· 6.21 mi
9:14/mi
56:41
↑ 79↓ 1380.4%
15K· 9.32 mi
9:21/mi
1:25:44
↑ 67↓ 78
20K· 12.43 mi
9:29/mi
1:55:13
↑ 106↓ 860.1%
Half· 13.11 mi
9:21/mi
2:01:36
↑ 19↓ 370.5%
25K· 15.53 mi
9:34/mi
2:24:48
↑ 66↓ 880.2%
30K· 18.64 mi
9:54/mi
2:55:34
↑ 181↓ 1480.2%
20M
9:52/mi
3:08:59
↑ 64↓ 500.2%
21M
10:29/mi
3:19:28
↑ 106↓ 241.6%
35K· 21.75 mi
9:28/mi
3:26:33
↑ 17↓ 861.7%
23M
9:55/mi
3:38:58
↑ 23↓ 630.6%
24M
9:24/mi
3:48:22
↓ 821.3%
40K· 24.85 mi
9:39/mi
3:56:37
↓ 200.3%
25.2M
10:21/mi
4:00:11
↑ 13↓ 160.2%
Finish· 26.22 mi
9:17/mi
4:09:39
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:36
Pace9:17 /mi
2nd Half
Distance13.11 mi
Time2:08:03
Pace9:46 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:2828:019:0128:01
9:01
-
10K
6.21 mi11:50:0856:419:0728:40
9:14
+0:13
15K
9.32 mi12:19:111:25:449:1229:03
9:21
+0:07
20K
12.43 mi12:48:401:55:139:1629:29
9:29
+0:08
Half
13.11 mi12:55:032:01:369:176:23
9:21
-0:08
25K
15.53 mi13:18:152:24:489:1923:12
9:34
+0:13
30K
18.64 mi13:49:012:55:349:2530:46
9:54
+0:20
20M
20.00 mi14:02:263:08:599:2713:25
9:52
-0:02
21M
21.00 mi14:12:553:19:289:3010:29
10:29
+0:37
35K
21.75 mi14:20:003:26:339:307:05
9:28
-1:01
23M
23.00 mi14:32:253:38:589:3112:25
9:55
+0:27
24M
24.00 mi14:41:493:48:229:319:24
9:24
-0:31
40K
24.85 mi14:50:043:56:379:318:15
9:39
+0:15
25.2M
25.20 mi14:53:384:00:119:323:34
10:21
+0:42
Finish
26.22 mi15:03:064:09:399:329:28
9:17
-1:04

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

9:01 /mi

Average Pace

9:32 /mi

Slowest Pace

10:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:55:36

94% of race

Time at Steady Pace

14:03

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:31 /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 mi11:21:2828:019:0128:01
9:01
#20540
10K
6.21 mi11:50:0856:419:0728:40
9:14
#21145
15K
9.32 mi12:19:111:25:449:1229:03
9:21
#21363
20K
12.43 mi12:48:401:55:139:1629:29
9:29
#21423
Half
13.11 mi12:55:032:01:369:176:23
9:21
#21424
25K
15.53 mi13:18:152:24:489:1923:12
9:34
#21349
30K
18.64 mi13:49:012:55:349:2530:46
9:54
#21229
20M
20.00 mi14:02:263:08:599:2713:25
9:52
#21117
21M
21.00 mi14:12:553:19:289:3010:29
10:29
#21023
35K
21.75 mi14:20:003:26:339:307:05
9:28
#20957
23M
23.00 mi14:32:253:38:589:3112:25
9:55
#20858
24M
24.00 mi14:41:493:48:229:319:24
9:24
#20769
40K
24.85 mi14:50:043:56:379:318:15
9:39
#20700
25.2M
25.20 mi14:53:384:00:119:323:34
10:21
#20671
Finish
26.22 mi15:03:064:09:399:329:28
9:17
#20619
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi205408138813821811(Top 82%)8678(Top 76%)8678(Top 719%)
10K6.21 mi3.10 mi21145-6058390-2528390-25221704(Top 82%)8657(Top 76%)8657(Top 717%)
15K9.32 mi3.11 mi21363-2188480-908480-9021811(Top 82%)8678(Top 76%)8678(Top 719%)
20K12.43 mi3.11 mi21423-608508-288508-2821524(Top 81%)8533(Top 75%)8533(Top 707%)
Half13.11 mi0.68 mi21424-18504+48504+421700(Top 82%)8625(Top 76%)8625(Top 715%)
25K15.53 mi2.42 mi21349+758458+468458+4621059(Top 79%)8298(Top 73%)8298(Top 687%)
30K18.64 mi3.11 mi21229+1208412+468412+4620761(Top 78%)8201(Top 72%)8201(Top 679%)
20M20.00 mi1.36 mi21117+1128367+458367+4520109(Top 76%)7925(Top 69%)7925(Top 657%)
21M21.00 mi1.00 mi21023+948327+408327+4019569(Top 74%)7687(Top 67%)7687(Top 637%)
35K21.75 mi0.75 mi20957+668298+298298+2919778(Top 74%)7806(Top 68%)7806(Top 647%)
23M23.00 mi1.25 mi20858+998255+438255+4319747(Top 74%)7822(Top 68%)7822(Top 648%)
24M24.00 mi1.00 mi20769+898214+418214+4118878(Top 71%)7381(Top 65%)7381(Top 612%)
40K24.85 mi0.85 mi20700+698188+268188+2618882(Top 71%)7432(Top 65%)7432(Top 616%)
25.2M25.20 mi0.35 mi20671+298175+138175+1318662(Top 70%)7324(Top 64%)7324(Top 607%)
Finish26.22 mi1.02 mi20619+528156+198156+1919343(Top 73%)7643(Top 67%)7643(Top 633%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

21811

Females

8678

F50-54

8678

5K→10K

3.1 - 6.2 mi

Top 82%
×5story building
+79ft-138ft

Overall

21704

Females

8657

F50-54

8657

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

21811

Females

8678

F50-54

8678

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

21524

Females

8533

F50-54

8533

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

21700

Females

8625

F50-54

8625

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

21059

Females

8298

F50-54

8298

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

20761

Females

8201

F50-54

8201

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

20109

Females

7925

F50-54

7925

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

19569

Females

7687

F50-54

7687

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

19778

Females

7806

F50-54

7806

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

19747

Females

7822

F50-54

7822

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

18878

Females

7381

F50-54

7381

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

18882

Females

7432

F50-54

7432

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18662

Females

7324

F50-54

7324

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2story building
+22ft-21ft

Overall

19343

Females

7643

F50-54

7643

Passing Analysis

Category:
Athletes Passed
1363
Passed By
1442
Net Change
-79
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20540
5K → 10K89694-605#20540#21145
10K → 15K80298-218#21145#21363
15K → 20K120180-60#21363#21423
20K → Half2324-1#21423#21424
Half → 25K13156+75#21424#21349
25K → 30K19676+120#21349#21229
30K → 20M12311+112#21229#21117
20M → 21M12228+94#21117#21023
21M → 35K7812+66#21023#20957
35K → 23M12425+99#20957#20858
23M → 24M945+89#20858#20769
24M → 40K8011+69#20769#20700
40K → 25.2M356+29#20700#20671
25.2M → Finish6816+52#20671#20619
TOTALS13631442-79
📊

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