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BOSTON MARATHON 2023

Catherine Giles

Bib: 22066•F

BC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 44%
Masters (Masters Women)
#0 / 6539
Top 33%
Division (F55-59)
#0 / 815
Top 12%
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
8:14/mi
25:36
↑ 97↓ 3451.5%
10K· 6.21 mi
7:58/mi
50:20
↑ 79↓ 1380.4%
15K· 9.32 mi
8:03/mi
1:15:21
↑ 67↓ 78
20K· 12.43 mi
8:14/mi
1:40:56
↑ 106↓ 860.1%
Half· 13.11 mi
8:12/mi
1:46:32
↑ 19↓ 370.5%
25K· 15.53 mi
8:14/mi
2:06:29
↑ 66↓ 880.2%
30K· 18.64 mi
8:37/mi
2:33:14
↑ 181↓ 1480.2%
20M
8:35/mi
2:44:54
↑ 64↓ 500.2%
21M
9:17/mi
2:54:11
↑ 106↓ 241.6%
35K· 21.75 mi
8:35/mi
3:00:36
↑ 17↓ 861.7%
23M
8:53/mi
3:11:43
↑ 23↓ 630.6%
24M
8:53/mi
3:20:36
↓ 821.3%
40K· 24.85 mi
9:09/mi
3:28:25
↓ 200.3%
25.2M
10:06/mi
3:31:54
↑ 13↓ 160.2%
Finish· 26.22 mi
9:24/mi
3:41:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:32
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time1:54:57
Pace8:46 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:0725:368:1425:36
8:14
-
10K
6.21 mi11:46:5150:208:0624:44
7:58
-0:16
15K
9.32 mi12:11:521:15:218:0525:01
8:03
+0:05
20K
12.43 mi12:37:271:40:568:0725:35
8:14
+0:11
Half
13.11 mi12:43:031:46:328:085:36
8:12
-0:02
25K
15.53 mi13:03:002:06:298:0919:57
8:14
+0:02
30K
18.64 mi13:29:452:33:148:1326:45
8:37
+0:23
20M
20.00 mi13:41:252:44:548:1511:40
8:35
-0:02
21M
21.00 mi13:50:422:54:118:189:17
9:17
+0:42
35K
21.75 mi13:57:073:00:368:186:25
8:35
-0:42
23M
23.00 mi14:08:143:11:438:2011:07
8:53
+0:18
24M
24.00 mi14:17:073:20:368:228:53
8:53
0:00
40K
24.85 mi14:24:563:28:258:237:49
9:09
+0:16
25.2M
25.20 mi14:28:253:31:548:253:29
10:06
+0:57
Finish
26.22 mi14:38:003:41:298:279:35
9:24
-0:42

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

7:58 /mi

Average Pace

8:27 /mi

Slowest Pace

10:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:29

57% of race

Time at Steady Pace

44:50

20% of race

Time at Slower Pace

50:10

23% of race

Average Pace: 8:27 /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 mi11:22:0725:368:1425:36
8:14
#15733
10K
6.21 mi11:46:5150:208:0624:44
7:58
#15128
15K
9.32 mi12:11:521:15:218:0525:01
8:03
#15014
20K
12.43 mi12:37:271:40:568:0725:35
8:14
#15029
Half
13.11 mi12:43:031:46:328:085:36
8:12
#15069
25K
15.53 mi13:03:002:06:298:0919:57
8:14
#14932
30K
18.64 mi13:29:452:33:148:1326:45
8:37
#14952
20M
20.00 mi13:41:252:44:548:1511:40
8:35
#14875
21M
21.00 mi13:50:422:54:118:189:17
9:17
#14861
35K
21.75 mi13:57:073:00:368:186:25
8:35
#14878
23M
23.00 mi14:08:143:11:438:2011:07
8:53
#14902
24M
24.00 mi14:17:073:20:368:228:53
8:53
#14960
40K
24.85 mi14:24:563:28:258:237:49
9:09
#15011
25.2M
25.20 mi14:28:253:31:548:253:29
10:06
#15060
Finish
26.22 mi14:38:003:41:298:279:35
9:24
#15299
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi157335113511314832(Top 56%)4589(Top 40%)4589(Top 563%)
10K6.21 mi3.10 mi15128+6054730+3834730+38314516(Top 55%)4370(Top 38%)4370(Top 536%)
15K9.32 mi3.11 mi15014+1144673+574673+5714832(Top 56%)4589(Top 40%)4589(Top 563%)
20K12.43 mi3.11 mi15029-154700-274700-2715188(Top 57%)4829(Top 42%)4829(Top 593%)
Half13.11 mi0.68 mi15069-404729-294729-2915897(Top 60%)5229(Top 46%)5229(Top 642%)
25K15.53 mi2.42 mi14932+1374666+634666+6314467(Top 54%)4494(Top 39%)4494(Top 551%)
30K18.64 mi3.11 mi14952-204715-494715-4914985(Top 56%)4921(Top 43%)4921(Top 604%)
20M20.00 mi1.36 mi14875+774690+254690+2514203(Top 53%)4545(Top 40%)4545(Top 558%)
21M21.00 mi1.00 mi14861+144705-154705-1514917(Top 56%)5006(Top 44%)5006(Top 614%)
35K21.75 mi0.75 mi14878-174735-304735-3015751(Top 59%)5546(Top 49%)5546(Top 680%)
23M23.00 mi1.25 mi14902-244773-384773-3815439(Top 58%)5415(Top 47%)5415(Top 664%)
24M24.00 mi1.00 mi14960-584833-604833-6016696(Top 63%)6190(Top 54%)6190(Top 760%)
40K24.85 mi0.85 mi15011-514883-504883-5016836(Top 63%)6301(Top 55%)6301(Top 773%)
25.2M25.20 mi0.35 mi15060-494921-384921-3817781(Top 67%)6831(Top 60%)6831(Top 838%)
Finish26.22 mi1.02 mi15299-2395082-1615082-16119782(Top 74%)7877(Top 69%)7877(Top 967%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21story building
+97ft-345ft

Overall

14832

Females

4589

F55-59

4589

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

14516

Females

4370

F55-59

4370

10K→15K

6.2 - 9.3 mi

Top 56%
×3story building
+67ft-78ft

Overall

14832

Females

4589

F55-59

4589

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

15188

Females

4829

F55-59

4829

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

15897

Females

5229

F55-59

5229

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

14467

Females

4494

F55-59

4494

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

14985

Females

4921

F55-59

4921

30K→20M

18.6 - 20.0 mi

Top 53%
×5story building
+64ft-50ft

Overall

14203

Females

4545

F55-59

4545

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

14917

Females

5006

F55-59

5006

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

15751

Females

5546

F55-59

5546

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

15439

Females

5415

F55-59

5415

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

16696

Females

6190

F55-59

6190

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

16836

Females

6301

F55-59

6301

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

17781

Females

6831

F55-59

6831

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2story building
+22ft-21ft

Overall

19782

Females

7877

F55-59

7877

Passing Analysis

Category:
Athletes Passed
1971
Passed By
1537
Net Change
+434
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15733
5K → 10K713108+605#15733#15128
10K → 15K233119+114#15128#15014
15K → 20K182197-15#15014#15029
20K → Half2262-40#15029#15069
Half → 25K19962+137#15069#14932
25K → 30K165185-20#14932#14952
30K → 20M12144+77#14952#14875
20M → 21M8672+14#14875#14861
21M → 35K4562-17#14861#14878
35K → 23M7296-24#14878#14902
23M → 24M47105-58#14902#14960
24M → 40K52103-51#14960#15011
40K → 25.2M2372-49#15011#15060
25.2M → Finish11250-239#15060#15299
TOTALS19711537+434
📊

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