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BOSTON MARATHON 2023

Sandy Pelkowsky

Bib: 25064•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
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
9:24/mi
29:11
↑ 97↓ 3451.5%
10K· 6.21 mi
9:02/mi
57:14
↑ 79↓ 1380.4%
15K· 9.32 mi
8:57/mi
1:25:02
↑ 67↓ 78
20K· 12.43 mi
8:48/mi
1:52:23
↑ 106↓ 860.1%
Half· 13.11 mi
8:51/mi
1:58:25
↑ 19↓ 370.5%
25K· 15.53 mi
8:57/mi
2:20:06
↑ 66↓ 880.2%
30K· 18.64 mi
9:06/mi
2:48:22
↑ 181↓ 1480.2%
20M
9:10/mi
3:00:50
↑ 64↓ 500.2%
21M
9:38/mi
3:10:28
↑ 106↓ 241.6%
35K· 21.75 mi
9:15/mi
3:17:23
↑ 17↓ 861.7%
23M
9:29/mi
3:29:16
↑ 23↓ 630.6%
24M
9:25/mi
3:38:41
↓ 821.3%
40K· 24.85 mi
9:44/mi
3:47:00
↓ 200.3%
25.2M
9:52/mi
3:50:24
↑ 13↓ 160.2%
Finish· 26.22 mi
8:38/mi
3:59:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:25
Pace9:02 /mi
2nd Half
Distance13.11 mi
Time2:00:47
Pace9:13 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:0929:119:2429:11
9:24
-
10K
6.21 mi12:13:1257:149:1328:03
9:02
-0:22
15K
9.32 mi12:41:001:25:029:0727:48
8:57
-0:05
20K
12.43 mi13:08:211:52:239:0327:21
8:48
-0:09
Half
13.11 mi13:14:231:58:259:026:02
8:51
+0:03
25K
15.53 mi13:36:042:20:069:0121:41
8:57
+0:06
30K
18.64 mi14:04:202:48:229:0228:16
9:06
+0:09
20M
20.00 mi14:16:483:00:509:0212:28
9:10
+0:04
21M
21.00 mi14:26:263:10:289:049:38
9:38
+0:28
35K
21.75 mi14:33:213:17:239:056:55
9:15
-0:23
23M
23.00 mi14:45:143:29:169:0611:53
9:29
+0:14
24M
24.00 mi14:54:393:38:419:079:25
9:25
-0:04
40K
24.85 mi15:02:583:47:009:088:19
9:44
+0:19
25.2M
25.20 mi15:06:223:50:249:093:24
9:52
+0:08
Finish
26.22 mi15:15:103:59:129:088:48
8:38
-1:14

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

8:38 /mi

Average Pace

9:08 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:37:51

91% of race

Time at Steady Pace

21:21

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:07 /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 mi11:45:0929:119:2429:11
9:24
#21798
10K
6.21 mi12:13:1257:149:1328:03
9:02
#21438
15K
9.32 mi12:41:001:25:029:0727:48
8:57
#21125
20K
12.43 mi13:08:211:52:239:0327:21
8:48
#20553
Half
13.11 mi13:14:231:58:259:026:02
8:51
#20507
25K
15.53 mi13:36:042:20:069:0121:41
8:57
#20206
30K
18.64 mi14:04:202:48:229:0228:16
9:06
#19737
20M
20.00 mi14:16:483:00:509:0212:28
9:10
#19561
21M
21.00 mi14:26:263:10:289:049:38
9:38
#19376
35K
21.75 mi14:33:213:17:239:056:55
9:15
#19350
23M
23.00 mi14:45:143:29:169:0611:53
9:29
#19287
24M
24.00 mi14:54:393:38:419:079:25
9:25
#19289
40K
24.85 mi15:02:583:47:009:088:19
9:44
#19287
25.2M
25.20 mi15:06:223:50:249:093:24
9:52
#19268
Finish
26.22 mi15:15:103:59:129:088:48
8:38
#19173
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi217988784878420260(Top 76%)7816(Top 68%)7816(Top 160%)
10K6.21 mi3.10 mi21438+3608550+2348550+23420993(Top 79%)8257(Top 72%)8257(Top 169%)
15K9.32 mi3.11 mi21125+3138346+2048346+20420260(Top 76%)7816(Top 68%)7816(Top 160%)
20K12.43 mi3.11 mi20553+5728026+3208026+32018713(Top 70%)6918(Top 61%)6918(Top 142%)
Half13.11 mi0.68 mi20507+467997+297997+2919755(Top 74%)7526(Top 66%)7526(Top 154%)
25K15.53 mi2.42 mi20206+3017822+1757822+17518693(Top 70%)6962(Top 61%)6962(Top 143%)
30K18.64 mi3.11 mi19737+4697576+2467576+24617696(Top 66%)6467(Top 57%)6467(Top 132%)
20M20.00 mi1.36 mi19561+1767483+937483+9317449(Top 66%)6428(Top 56%)6428(Top 132%)
21M21.00 mi1.00 mi19376+1857388+957388+9516609(Top 62%)5979(Top 52%)5979(Top 122%)
35K21.75 mi0.75 mi19350+267379+97379+918945(Top 71%)7358(Top 64%)7358(Top 151%)
23M23.00 mi1.25 mi19287+637343+367343+3618325(Top 69%)7031(Top 62%)7031(Top 144%)
24M24.00 mi1.00 mi19289-27355-127355-1218923(Top 71%)7402(Top 65%)7402(Top 152%)
40K24.85 mi0.85 mi19287+27361-67361-619128(Top 72%)7555(Top 66%)7555(Top 155%)
25.2M25.20 mi0.35 mi19268+197357+47357+416889(Top 63%)6380(Top 56%)6380(Top 131%)
Finish26.22 mi1.02 mi19173+957306+517306+5116212(Top 61%)5954(Top 52%)5954(Top 122%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

20260

Females

7816

F18-39

7816

5K→10K

3.1 - 6.2 mi

Top 79%
×5story building
+79ft-138ft

Overall

20993

Females

8257

F18-39

8257

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

20260

Females

7816

F18-39

7816

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

18713

Females

6918

F18-39

6918

20K→Half

12.4 - 13.1 mi

Top 74%
×2story building
+19ft-37ft

Overall

19755

Females

7526

F18-39

7526

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

18693

Females

6962

F18-39

6962

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

17696

Females

6467

F18-39

6467

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

17449

Females

6428

F18-39

6428

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

16609

Females

5979

F18-39

5979

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

18945

Females

7358

F18-39

7358

35K→23M

21.8 - 23.0 mi

Top 69%
×5story building
+23ft-63ft

Overall

18325

Females

7031

F18-39

7031

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

18923

Females

7402

F18-39

7402

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

19128

Females

7555

F18-39

7555

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16889

Females

6380

F18-39

6380

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

16212

Females

5954

F18-39

5954

Passing Analysis

Category:
Athletes Passed
3066
Passed By
441
Net Change
+2625
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21798
5K → 10K491131+360#21798#21438
10K → 15K36148+313#21438#21125
15K → 20K5775+572#21125#20553
20K → Half5610+46#20553#20507
Half → 25K31716+301#20507#20206
25K → 30K4778+469#20206#19737
30K → 20M18711+176#19737#19561
20M → 21M1949+185#19561#19376
21M → 35K4721+26#19376#19350
35K → 23M10340+63#19350#19287
23M → 24M6365-2#19287#19289
24M → 40K4846+2#19289#19287
40K → 25.2M3314+19#19287#19268
25.2M → Finish11217+95#19268#19173
TOTALS3066441+2625
📊

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