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BOSTON MARATHON 2023

Kathleen Gemmell

Bib: 30317•F

NH

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
9:48/mi
30:27
↑ 97↓ 3451.5%
10K· 6.21 mi
9:06/mi
58:43
↑ 79↓ 1380.4%
15K· 9.32 mi
9:00/mi
1:26:41
↑ 67↓ 78
20K· 12.43 mi
8:59/mi
1:54:36
↑ 106↓ 860.1%
Half· 13.11 mi
9:01/mi
2:00:45
↑ 19↓ 370.5%
25K· 15.53 mi
9:21/mi
2:23:24
↑ 66↓ 880.2%
30K· 18.64 mi
9:42/mi
2:53:32
↑ 181↓ 1480.2%
20M
9:58/mi
3:07:05
↑ 64↓ 500.2%
21M
10:28/mi
3:17:33
↑ 106↓ 241.6%
35K· 21.75 mi
9:39/mi
3:24:46
↑ 17↓ 861.7%
23M
10:07/mi
3:37:26
↑ 23↓ 630.6%
24M
9:48/mi
3:47:14
↓ 821.3%
40K· 24.85 mi
10:06/mi
3:55:52
↓ 200.3%
25.2M
10:15/mi
3:59:24
↑ 13↓ 160.2%
Finish· 26.22 mi
9:10/mi
4:08:44
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:45
Pace9:13 /mi
2nd Half
Distance13.11 mi
Time2:07:59
Pace9:46 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:5030:279:4830:27
9:48
-
10K
6.21 mi12:18:0658:439:2728:16
9:06
-0:42
15K
9.32 mi12:46:041:26:419:1827:58
9:00
-0:06
20K
12.43 mi13:13:591:54:369:1327:55
8:59
-0:01
Half
13.11 mi13:20:082:00:459:136:09
9:01
+0:02
25K
15.53 mi13:42:472:23:249:1422:39
9:21
+0:20
30K
18.64 mi14:12:552:53:329:1930:08
9:42
+0:21
20M
20.00 mi14:26:283:07:059:2113:33
9:58
+0:16
21M
21.00 mi14:36:563:17:339:2410:28
10:28
+0:30
35K
21.75 mi14:44:093:24:469:257:13
9:39
-0:49
23M
23.00 mi14:56:493:37:269:2712:40
10:07
+0:28
24M
24.00 mi15:06:373:47:149:289:48
9:48
-0:19
40K
24.85 mi15:15:153:55:529:298:38
10:06
+0:18
25.2M
25.20 mi15:18:473:59:249:303:32
10:15
+0:09
Finish
26.22 mi15:28:074:08:449:309:20
9:10
-1:05

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

8:59 /mi

Average Pace

9:30 /mi

Slowest Pace

10:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:19:53

80% of race

Time at Steady Pace

48:51

20% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:29 /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 mi11:49:5030:279:4830:27
9:48
#22925
10K
6.21 mi12:18:0658:439:2728:16
9:06
#22200
15K
9.32 mi12:46:041:26:419:1827:58
9:00
#21689
20K
12.43 mi13:13:591:54:369:1327:55
8:59
#21255
Half
13.11 mi13:20:082:00:459:136:09
9:01
#21220
25K
15.53 mi13:42:472:23:249:1422:39
9:21
#21058
30K
18.64 mi14:12:552:53:329:1930:08
9:42
#20865
20M
20.00 mi14:26:283:07:059:2113:33
9:58
#20807
21M
21.00 mi14:36:563:17:339:2410:28
10:28
#20712
35K
21.75 mi14:44:093:24:469:257:13
9:39
#20681
23M
23.00 mi14:56:493:37:269:2712:40
10:07
#20643
24M
24.00 mi15:06:373:47:149:289:48
9:48
#20627
40K
24.85 mi15:15:153:55:529:298:38
10:06
#20606
25.2M
25.20 mi15:18:473:59:249:303:32
10:15
#20567
Finish
26.22 mi15:28:074:08:449:309:20
9:10
#20492
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi229259344934420523(Top 77%)7971(Top 70%)7971(Top 163%)
10K6.21 mi3.10 mi22200+7258953+3918953+39121263(Top 80%)8422(Top 74%)8422(Top 172%)
15K9.32 mi3.11 mi21689+5118671+2828671+28220523(Top 77%)7971(Top 70%)7971(Top 163%)
20K12.43 mi3.11 mi21255+4348409+2628409+26219638(Top 74%)7463(Top 65%)7463(Top 153%)
Half13.11 mi0.68 mi21220+358386+238386+2320531(Top 77%)7986(Top 70%)7986(Top 164%)
25K15.53 mi2.42 mi21058+1628296+908296+9020337(Top 76%)7894(Top 69%)7894(Top 162%)
30K18.64 mi3.11 mi20865+1938193+1038193+10320148(Top 76%)7855(Top 69%)7855(Top 161%)
20M20.00 mi1.36 mi20807+588182+118182+1120417(Top 77%)8088(Top 71%)8088(Top 166%)
21M21.00 mi1.00 mi20712+958141+418141+4119509(Top 73%)7651(Top 67%)7651(Top 157%)
35K21.75 mi0.75 mi20681+318132+98132+920319(Top 76%)8119(Top 71%)8119(Top 166%)
23M23.00 mi1.25 mi20643+388130+28130+220346(Top 76%)8152(Top 71%)8152(Top 167%)
24M24.00 mi1.00 mi20627+168141-118141-1120241(Top 76%)8115(Top 71%)8115(Top 166%)
40K24.85 mi0.85 mi20606+218136+58136+520242(Top 76%)8186(Top 72%)8186(Top 168%)
25.2M25.20 mi0.35 mi20567+398116+208116+2018356(Top 69%)7165(Top 63%)7165(Top 147%)
Finish26.22 mi1.02 mi20492+758084+328084+3218765(Top 70%)7321(Top 64%)7321(Top 150%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21story building
+97ft-345ft

Overall

20523

Females

7971

F18-39

7971

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

21263

Females

8422

F18-39

8422

10K→15K

6.2 - 9.3 mi

Top 77%
×3story building
+67ft-78ft

Overall

20523

Females

7971

F18-39

7971

15K→20K

9.3 - 12.4 mi

Top 74%
×5story building
+106ft-86ft

Overall

19638

Females

7463

F18-39

7463

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

20531

Females

7986

F18-39

7986

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

20337

Females

7894

F18-39

7894

25K→30K

15.5 - 18.6 mi

Top 76%
×9story building
+181ft-148ft

Overall

20148

Females

7855

F18-39

7855

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

20417

Females

8088

F18-39

8088

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

19509

Females

7651

F18-39

7651

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

20319

Females

8119

F18-39

8119

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

20346

Females

8152

F18-39

8152

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

20241

Females

8115

F18-39

8115

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20242

Females

8186

F18-39

8186

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

18356

Females

7165

F18-39

7165

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2story building
+22ft-21ft

Overall

18765

Females

7321

F18-39

7321

Passing Analysis

Category:
Athletes Passed
2842
Passed By
409
Net Change
+2433
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22925
5K → 10K76035+725#22925#22200
10K → 15K52312+511#22200#21689
15K → 20K45319+434#21689#21255
20K → Half438+35#21255#21220
Half → 25K19735+162#21220#21058
25K → 30K26168+193#21058#20865
30K → 20M11153+58#20865#20807
20M → 21M11924+95#20807#20712
21M → 35K5120+31#20712#20681
35K → 23M8446+38#20681#20643
23M → 24M5741+16#20643#20627
24M → 40K5130+21#20627#20606
40K → 25.2M434+39#20606#20567
25.2M → Finish8914+75#20567#20492
TOTALS2842409+2433
📊

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