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BOSTON MARATHON 2023

Kathy Steegstra

BC

Bib: 23831 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F60-64)
#0 / 527
Top 36%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:56/mi
27:44
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
9:07/mi
56:05
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:08/mi
1:24:27
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:16/mi
1:53:14
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
9:16/mi
1:59:33
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:38/mi
2:22:55
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:37/mi
2:52:49
↑ 181↓ 1480.2%
138 ft elev
20M
9:49/mi
3:06:10
↑ 64↓ 500.2%
148 ft elev
21M
10:03/mi
3:16:13
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:41/mi
3:23:28
↑ 17↓ 861.7%
156 ft elev
23M
9:53/mi
3:35:51
↑ 23↓ 630.6%
116 ft elev
24M
9:42/mi
3:45:33
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:32/mi
3:53:42
↓ 200.3%
20 ft elev
25.2M
9:17/mi
3:56:54
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:42/mi
4:05:46
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:33
Pace9:07 /mi
2nd Half
Distance13.11 mi
Time2:06:13
Pace9:38 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:0927:448:5627:44
8:56
-
10K
6.21 mi11:52:3056:059:0228:21
9:07
+0:11
15K
9.32 mi12:20:521:24:279:0428:22
9:08
+0:01
20K
12.43 mi12:49:391:53:149:0728:47
9:16
+0:08
Half
13.11 mi12:55:581:59:339:076:19
9:16
0:00
25K
15.53 mi13:19:202:22:559:1223:22
9:38
+0:22
30K
18.64 mi13:49:142:52:499:1629:54
9:37
-0:01
20M
20.00 mi14:02:353:06:109:1813:21
9:49
+0:12
21M
21.00 mi14:12:383:16:139:2110:03
10:03
+0:14
35K
21.75 mi14:19:533:23:289:217:15
9:41
-0:22
23M
23.00 mi14:32:163:35:519:2312:23
9:53
+0:12
24M
24.00 mi14:41:583:45:339:249:42
9:42
-0:11
40K
24.85 mi14:50:073:53:429:248:09
9:32
-0:10
25.2M
25.20 mi14:53:193:56:549:243:12
9:17
-0:15
Finish
26.22 mi15:02:114:05:469:238:52
8:42
-0:35

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

8:42 /mi

Average Pace

9:23 /mi

Slowest Pace

10:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:19:46

57% of race

Time at Steady Pace

1:46:00

43% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:22 /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 mi11:24:0927:448:5627:44
8:56
#20107
10K
6.21 mi11:52:3056:059:0228:21
9:07
#20748
15K
9.32 mi12:20:521:24:279:0428:22
9:08
#20845
20K
12.43 mi12:49:391:53:149:0728:47
9:16
#20830
Half
13.11 mi12:55:581:59:339:076:19
9:16
#20865
25K
15.53 mi13:19:202:22:559:1223:22
9:38
#20929
30K
18.64 mi13:49:142:52:499:1629:54
9:37
#20714
20M
20.00 mi14:02:353:06:109:1813:21
9:49
#20633
21M
21.00 mi14:12:383:16:139:2110:03
10:03
#20484
35K
21.75 mi14:19:533:23:289:217:15
9:41
#20478
23M
23.00 mi14:32:163:35:519:2312:23
9:53
#20413
24M
24.00 mi14:41:583:45:339:249:42
9:42
#20386
40K
24.85 mi14:50:073:53:429:248:09
9:32
#20308
25.2M
25.20 mi14:53:193:56:549:243:12
9:17
#20233
Finish
26.22 mi15:02:114:05:469:238:52
8:42
#20121
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi201077881788121070(Top 79%)8272(Top 72%)8272(Top 1570%)
10K6.21 mi3.10 mi20748-6418169-2888169-28821380(Top 80%)8485(Top 74%)8485(Top 1610%)
15K9.32 mi3.11 mi20845-978201-328201-3221070(Top 79%)8272(Top 72%)8272(Top 1570%)
20K12.43 mi3.11 mi20830+158176+258176+2520848(Top 78%)8139(Top 71%)8139(Top 1544%)
Half13.11 mi0.68 mi20865-358193-178193-1721359(Top 80%)8431(Top 74%)8431(Top 1600%)
25K15.53 mi2.42 mi20929-648221-288221-2821253(Top 80%)8409(Top 74%)8409(Top 1596%)
30K18.64 mi3.11 mi20714+2158113+1088113+10819887(Top 75%)7703(Top 67%)7703(Top 1462%)
20M20.00 mi1.36 mi20633+818095+188095+1819942(Top 75%)7817(Top 68%)7817(Top 1483%)
21M21.00 mi1.00 mi20484+1498022+738022+7318232(Top 68%)6897(Top 60%)6897(Top 1309%)
35K21.75 mi0.75 mi20478+68030-88030-820458(Top 77%)8200(Top 72%)8200(Top 1556%)
23M23.00 mi1.25 mi20413+658003+278003+2719678(Top 74%)7785(Top 68%)7785(Top 1477%)
24M24.00 mi1.00 mi20386+277997+67997+619913(Top 75%)7925(Top 69%)7925(Top 1504%)
40K24.85 mi0.85 mi20308+787963+347963+3418467(Top 69%)7199(Top 63%)7199(Top 1366%)
25.2M25.20 mi0.35 mi20233+757924+397924+3914201(Top 53%)4885(Top 43%)4885(Top 927%)
Finish26.22 mi1.02 mi20121+1127875+497875+4916537(Top 62%)6128(Top 54%)6128(Top 1163%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21story building
+97ft-345ft

Overall

21070

Females

8272

F60-64

8272

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

21380

Females

8485

F60-64

8485

10K→15K

6.2 - 9.3 mi

Top 79%
×3story building
+67ft-78ft

Overall

21070

Females

8272

F60-64

8272

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

20848

Females

8139

F60-64

8139

20K→Half

12.4 - 13.1 mi

Top 80%
×2story building
+19ft-37ft

Overall

21359

Females

8431

F60-64

8431

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

21253

Females

8409

F60-64

8409

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19887

Females

7703

F60-64

7703

30K→20M

18.6 - 20.0 mi

Top 75%
×5story building
+64ft-50ft

Overall

19942

Females

7817

F60-64

7817

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

18232

Females

6897

F60-64

6897

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

20458

Females

8200

F60-64

8200

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

19678

Females

7785

F60-64

7785

23M→24M

23.0 - 24.0 mi

Top 75%
×6story building
+12ft-82ft

Overall

19913

Females

7925

F60-64

7925

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18467

Females

7199

F60-64

7199

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

14201

Females

4885

F60-64

4885

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

16537

Females

6128

F60-64

6128

Passing Analysis

Category:
Athletes Passed
1485
Passed By
1499
Net Change
-14
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20107
5K → 10K82723-641#20107#20748
10K → 15K136233-97#20748#20845
15K → 20K165150+15#20845#20830
20K → Half2156-35#20830#20865
Half → 25K76140-64#20865#20929
25K → 30K26348+215#20929#20714
30K → 20M10928+81#20714#20633
20M → 21M1578+149#20633#20484
21M → 35K4842+6#20484#20478
35K → 23M10035+65#20478#20413
23M → 24M5023+27#20413#20386
24M → 40K879+78#20386#20308
40K → 25.2M750+75#20308#20233
25.2M → Finish1164+112#20233#20121
TOTALS14851499-14
📊

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