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BOSTON MARATHON 2023

Cynthia Pollock

Bib: 21768•F

MI

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
8:47/mi
27:17
↑ 97↓ 3451.5%
10K· 6.21 mi
8:46/mi
54:30
↑ 79↓ 1380.4%
15K· 9.32 mi
8:55/mi
1:22:11
↑ 67↓ 78
20K· 12.43 mi
8:57/mi
1:49:58
↑ 106↓ 860.1%
Half· 13.11 mi
8:49/mi
1:55:59
↑ 19↓ 370.5%
25K· 15.53 mi
8:49/mi
2:17:21
↑ 66↓ 880.2%
30K· 18.64 mi
9:04/mi
2:45:30
↑ 181↓ 1480.2%
20M
8:58/mi
2:57:41
↑ 64↓ 500.2%
21M
9:21/mi
3:07:02
↑ 106↓ 241.6%
35K· 21.75 mi
8:43/mi
3:13:33
↑ 17↓ 861.7%
23M
8:42/mi
3:24:26
↑ 23↓ 630.6%
24M
8:50/mi
3:33:16
↓ 821.3%
40K· 24.85 mi
8:53/mi
3:40:52
↓ 200.3%
25.2M
9:34/mi
3:44:10
↑ 13↓ 160.2%
Finish· 26.22 mi
8:30/mi
3:52:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:55:59
Pace8:51 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:56:51
Pace8:55 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:3827:178:4727:17
8:47
-
10K
6.21 mi11:47:5154:308:4627:13
8:46
-0:01
15K
9.32 mi12:15:321:22:118:4927:41
8:55
+0:09
20K
12.43 mi12:43:191:49:588:5127:47
8:57
+0:02
Half
13.11 mi12:49:201:55:598:516:01
8:49
-0:08
25K
15.53 mi13:10:422:17:218:5121:22
8:49
0:00
30K
18.64 mi13:38:512:45:308:5328:09
9:04
+0:15
20M
20.00 mi13:51:022:57:418:5312:11
8:58
-0:06
21M
21.00 mi14:00:233:07:028:549:21
9:21
+0:23
35K
21.75 mi14:06:543:13:338:546:31
8:43
-0:38
23M
23.00 mi14:17:473:24:268:5310:53
8:42
-0:01
24M
24.00 mi14:26:373:33:168:538:50
8:50
+0:08
40K
24.85 mi14:34:133:40:528:537:36
8:53
+0:03
25.2M
25.20 mi14:37:313:44:108:543:18
9:34
+0:41
Finish
26.22 mi14:46:113:52:508:538:40
8:30
-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

8:30 /mi

Average Pace

8:53 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:40:11

95% of race

Time at Steady Pace

12:39

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:53 /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 mi11:20:3827:178:4727:17
8:47
#19365
10K
6.21 mi11:47:5154:308:4627:13
8:46
#19525
15K
9.32 mi12:15:321:22:118:4927:41
8:55
#19693
20K
12.43 mi12:43:191:49:588:5127:47
8:57
#19580
Half
13.11 mi12:49:201:55:598:516:01
8:49
#19581
25K
15.53 mi13:10:422:17:218:5121:22
8:49
#19318
30K
18.64 mi13:38:512:45:308:5328:09
9:04
#18990
20M
20.00 mi13:51:022:57:418:5312:11
8:58
#18805
21M
21.00 mi14:00:233:07:028:549:21
9:21
#18586
35K
21.75 mi14:06:543:13:338:546:31
8:43
#18493
23M
23.00 mi14:17:473:24:268:5310:53
8:42
#18249
24M
24.00 mi14:26:373:33:168:538:50
8:50
#18177
40K
24.85 mi14:34:133:40:528:537:36
8:53
#18083
25.2M
25.20 mi14:37:313:44:108:543:18
9:34
#18045
Finish
26.22 mi14:46:113:52:508:538:40
8:30
#17943
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi193657416741620089(Top 75%)7725(Top 68%)7725(Top 425%)
10K6.21 mi3.10 mi19525-1607479-637479-6319733(Top 74%)7533(Top 66%)7533(Top 415%)
15K9.32 mi3.11 mi19693-1687563-847563-8420089(Top 75%)7725(Top 68%)7725(Top 425%)
20K12.43 mi3.11 mi19580+1137475+887475+8819428(Top 73%)7337(Top 64%)7337(Top 404%)
Half13.11 mi0.68 mi19581-17475747519595(Top 74%)7423(Top 65%)7423(Top 409%)
25K15.53 mi2.42 mi19318+2637316+1597316+15918038(Top 68%)6573(Top 58%)6573(Top 362%)
30K18.64 mi3.11 mi18990+3287133+1837133+18317501(Top 66%)6359(Top 56%)6359(Top 350%)
20M20.00 mi1.36 mi18805+1857039+947039+9416376(Top 62%)5801(Top 51%)5801(Top 319%)
21M21.00 mi1.00 mi18586+2196919+1206919+12015294(Top 57%)5231(Top 46%)5231(Top 288%)
35K21.75 mi0.75 mi18493+936884+356884+3516509(Top 62%)6008(Top 53%)6008(Top 331%)
23M23.00 mi1.25 mi18249+2446755+1296755+12914373(Top 54%)4846(Top 42%)4846(Top 267%)
24M24.00 mi1.00 mi18177+726729+266729+2616425(Top 62%)6045(Top 53%)6045(Top 333%)
40K24.85 mi0.85 mi18083+946685+446685+4415596(Top 59%)5641(Top 49%)5641(Top 310%)
25.2M25.20 mi0.35 mi18045+386670+156670+1515598(Top 59%)5659(Top 50%)5659(Top 311%)
Finish26.22 mi1.02 mi17943+1026621+496621+4915492(Top 58%)5539(Top 48%)5539(Top 305%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

20089

Females

7725

F45-49

7725

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

19733

Females

7533

F45-49

7533

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

20089

Females

7725

F45-49

7725

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19428

Females

7337

F45-49

7337

20K→Half

12.4 - 13.1 mi

Top 74%
×2story building
+19ft-37ft

Overall

19595

Females

7423

F45-49

7423

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

18038

Females

6573

F45-49

6573

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

17501

Females

6359

F45-49

6359

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

16376

Females

5801

F45-49

5801

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

15294

Females

5231

F45-49

5231

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

16509

Females

6008

F45-49

6008

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

14373

Females

4846

F45-49

4846

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

16425

Females

6045

F45-49

6045

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15596

Females

5641

F45-49

5641

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15598

Females

5659

F45-49

5659

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

15492

Females

5539

F45-49

5539

Passing Analysis

Category:
Athletes Passed
2391
Passed By
969
Net Change
+1422
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19365
5K → 10K242402-160#19365#19525
10K → 15K119287-168#19525#19693
15K → 20K217104+113#19693#19580
20K → Half2829-1#19580#19581
Half → 25K29229+263#19581#19318
25K → 30K36537+328#19318#18990
30K → 20M19813+185#18990#18805
20M → 21M2223+219#18805#18586
21M → 35K1029+93#18586#18493
35K → 23M2528+244#18493#18249
23M → 24M8917+72#18249#18177
24M → 40K1039+94#18177#18083
40K → 25.2M468+38#18083#18045
25.2M → Finish11614+102#18045#17943
TOTALS2391969+1422
📊

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