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BOSTON MARATHON 2023

Mervi Kaukko

Bib: 19315•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 43%
Masters (Masters Women)
#0 / 6539
Top 31%
Division (F40-44)
#0 / 1878
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
7:57/mi
24:41
↑ 97↓ 3451.5%
10K· 6.21 mi
7:46/mi
48:50
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:13:49
↑ 67↓ 78
20K· 12.43 mi
8:23/mi
1:39:52
↑ 106↓ 860.1%
Half· 13.11 mi
8:08/mi
1:45:25
↑ 19↓ 370.5%
25K· 15.53 mi
8:25/mi
2:05:49
↑ 66↓ 880.2%
30K· 18.64 mi
8:48/mi
2:33:08
↑ 181↓ 1480.2%
20M
8:49/mi
2:45:07
↑ 64↓ 500.2%
21M
9:28/mi
2:54:35
↑ 106↓ 241.6%
35K· 21.75 mi
8:44/mi
3:01:07
↑ 17↓ 861.7%
23M
8:46/mi
3:12:06
↑ 23↓ 630.6%
24M
8:40/mi
3:20:46
↓ 821.3%
40K· 24.85 mi
8:43/mi
3:28:13
↓ 200.3%
25.2M
9:31/mi
3:31:30
↑ 13↓ 160.2%
Finish· 26.22 mi
8:37/mi
3:40:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:25
Pace8:02 /mi
2nd Half
Distance13.11 mi
Time1:54:52
Pace8:46 /mi
📊Positive Split: 9.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:1924:417:5724:41
7:57
-
10K
6.21 mi11:43:2848:507:5224:09
7:46
-0:11
15K
9.32 mi12:08:271:13:497:5524:59
8:02
+0:16
20K
12.43 mi12:34:301:39:528:0226:03
8:23
+0:21
Half
13.11 mi12:40:031:45:258:025:33
8:08
-0:15
25K
15.53 mi13:00:272:05:498:0620:24
8:25
+0:17
30K
18.64 mi13:27:462:33:088:1327:19
8:48
+0:23
20M
20.00 mi13:39:452:45:078:1511:59
8:49
+0:01
21M
21.00 mi13:49:132:54:358:199:28
9:28
+0:39
35K
21.75 mi13:55:453:01:078:206:32
8:44
-0:44
23M
23.00 mi14:06:443:12:068:2110:59
8:46
+0:02
24M
24.00 mi14:15:243:20:468:228:40
8:40
-0:06
40K
24.85 mi14:22:513:28:138:237:27
8:43
+0:03
25.2M
25.20 mi14:26:083:31:308:243:17
9:31
+0:48
Finish
26.22 mi14:34:553:40:178:248:47
8:37
-0:54

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

7:46 /mi

Average Pace

8:24 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:49

57% of race

Time at Steady Pace

1:21:43

37% of race

Time at Slower Pace

12:45

6% of race

Average Pace: 8:24 /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 mi11:19:1924:417:5724:41
7:57
#13635
10K
6.21 mi11:43:2848:507:5224:09
7:46
#13279
15K
9.32 mi12:08:271:13:497:5524:59
8:02
#13743
20K
12.43 mi12:34:301:39:528:0226:03
8:23
#14373
Half
13.11 mi12:40:031:45:258:025:33
8:08
#14447
25K
15.53 mi13:00:272:05:498:0620:24
8:25
#14653
30K
18.64 mi13:27:462:33:088:1327:19
8:48
#14922
20M
20.00 mi13:39:452:45:078:1511:59
8:49
#14939
21M
21.00 mi13:49:132:54:358:199:28
9:28
#14979
35K
21.75 mi13:55:453:01:078:206:32
8:44
#15038
23M
23.00 mi14:06:443:12:068:2110:59
8:46
#15002
24M
24.00 mi14:15:243:20:468:228:40
8:40
#15001
40K
24.85 mi14:22:513:28:138:237:27
8:43
#14960
25.2M
25.20 mi14:26:083:31:308:243:17
9:31
#14961
Finish
26.22 mi14:34:553:40:178:248:47
8:37
#15016
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi136353809380914757(Top 55%)4545(Top 40%)4545(Top 242%)
10K6.21 mi3.10 mi13279+3563616+1933616+19312916(Top 49%)3388(Top 30%)3388(Top 180%)
15K9.32 mi3.11 mi13743-4643910-2943910-29414757(Top 55%)4545(Top 40%)4545(Top 242%)
20K12.43 mi3.11 mi14373-6304299-3894299-38916176(Top 61%)5460(Top 48%)5460(Top 291%)
Half13.11 mi0.68 mi14447-744346-474346-4715429(Top 58%)4962(Top 43%)4962(Top 264%)
25K15.53 mi2.42 mi14653-2064497-1514497-15115692(Top 59%)5266(Top 46%)5266(Top 280%)
30K18.64 mi3.11 mi14922-2694696-1994696-19916031(Top 60%)5524(Top 48%)5524(Top 294%)
20M20.00 mi1.36 mi14939-174732-364732-3615573(Top 58%)5329(Top 47%)5329(Top 284%)
21M21.00 mi1.00 mi14979-404780-484780-4815851(Top 60%)5552(Top 49%)5552(Top 296%)
35K21.75 mi0.75 mi15038-594839-594839-5916652(Top 63%)6091(Top 53%)6091(Top 324%)
23M23.00 mi1.25 mi15002+364838+14838+114872(Top 56%)5111(Top 45%)5111(Top 272%)
24M24.00 mi1.00 mi15001+14857-194857-1915514(Top 58%)5554(Top 49%)5554(Top 296%)
40K24.85 mi0.85 mi14960+414854+34854+314657(Top 55%)5131(Top 45%)5131(Top 273%)
25.2M25.20 mi0.35 mi14961-14863-94863-915400(Top 58%)5558(Top 49%)5558(Top 296%)
Finish26.22 mi1.02 mi15016-554918-554918-5516128(Top 61%)5899(Top 52%)5899(Top 314%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14757

Females

4545

F40-44

4545

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

12916

Females

3388

F40-44

3388

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14757

Females

4545

F40-44

4545

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

16176

Females

5460

F40-44

5460

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

15429

Females

4962

F40-44

4962

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

15692

Females

5266

F40-44

5266

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

16031

Females

5524

F40-44

5524

30K→20M

18.6 - 20.0 mi

Top 58%
×5story building
+64ft-50ft

Overall

15573

Females

5329

F40-44

5329

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

15851

Females

5552

F40-44

5552

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16652

Females

6091

F40-44

6091

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

14872

Females

5111

F40-44

5111

23M→24M

23.0 - 24.0 mi

Top 58%
×6story building
+12ft-82ft

Overall

15514

Females

5554

F40-44

5554

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

14657

Females

5131

F40-44

5131

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15400

Females

5558

F40-44

5558

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

16128

Females

5899

F40-44

5899

Passing Analysis

Category:
Athletes Passed
1340
Passed By
2721
Net Change
-1381
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13635
5K → 10K513157+356#13635#13279
10K → 15K66530-464#13279#13743
15K → 20K59689-630#13743#14373
20K → Half1084-74#14373#14447
Half → 25K91297-206#14447#14653
25K → 30K98367-269#14653#14922
30K → 20M7491-17#14922#14939
20M → 21M80120-40#14939#14979
21M → 35K3493-59#14979#15038
35K → 23M9256+36#15038#15002
23M → 24M6261+1#15002#15001
24M → 40K8443+41#15001#14960
40K → 25.2M3334-1#14960#14961
25.2M → Finish4499-55#14961#15016
TOTALS13402721-1381
📊

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