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BOSTON MARATHON 2025

Kristen Van Marcke

Bib: 18954•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 40%
Masters (Masters Women)
#0 / 6759
Top 26%
Division (F45-49)
#0 / 1813
Top 31%
Race Day Weather
50°/40°F
broken clouds

⏱️ 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
8:04/mi
25:03
↑ 97↓ 3451.5%
10K· 6.21 mi
8:04/mi
50:06
↑ 79↓ 1380.4%
15K· 9.32 mi
8:05/mi
1:15:14
↑ 67↓ 78
20K· 12.43 mi
8:06/mi
1:40:24
↑ 106↓ 860.1%
Half· 13.11 mi
8:04/mi
1:45:54
↑ 19↓ 370.5%
25K· 15.53 mi
8:08/mi
2:05:36
↑ 66↓ 880.2%
30K· 18.64 mi
8:22/mi
2:31:35
↑ 181↓ 1480.2%
20M
8:36/mi
2:43:16
↑ 64↓ 500.2%
21M
9:00/mi
2:52:16
↑ 106↓ 241.6%
35K· 21.75 mi
8:21/mi
2:58:31
↑ 17↓ 861.7%
23M
8:34/mi
3:09:14
↑ 23↓ 630.6%
24M
8:32/mi
3:17:46
↓ 821.3%
40K· 24.85 mi
8:35/mi
3:25:06
↓ 200.3%
25.2M
9:25/mi
3:28:21
↑ 13↓ 160.2%
Finish· 26.22 mi
8:20/mi
3:36:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:54
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time1:50:57
Pace8:28 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2125:038:0425:03
8:04
-
10K
6.21 mi11:41:2450:068:0425:03
8:04
0:00
15K
9.32 mi12:06:321:15:148:0425:08
8:05
+0:01
20K
12.43 mi12:31:421:40:248:0525:10
8:06
+0:01
Half
13.11 mi12:37:121:45:548:055:30
8:04
-0:02
25K
15.53 mi12:56:542:05:368:0519:42
8:08
+0:04
30K
18.64 mi13:22:532:31:358:0825:59
8:22
+0:14
20M
20.00 mi13:34:342:43:168:1011:41
8:36
+0:14
21M
21.00 mi13:43:342:52:168:129:00
9:00
+0:24
35K
21.75 mi13:49:492:58:318:136:15
8:21
-0:39
23M
23.00 mi14:00:323:09:148:1410:43
8:34
+0:13
24M
24.00 mi14:09:043:17:468:148:32
8:32
-0:02
40K
24.85 mi14:16:243:25:068:157:20
8:35
+0:03
25.2M
25.20 mi14:19:393:28:218:163:15
9:25
+0:50
Finish
26.22 mi14:28:093:36:518:178:30
8:20
-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

8:04 /mi

Average Pace

8:17 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:24:36

94% of race

Time at Steady Pace

12:15

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:16 /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 mi11:16:2125:038:0425:03
8:04
#17114
10K
6.21 mi11:41:2450:068:0425:03
8:04
#16993
15K
9.32 mi12:06:321:15:148:0425:08
8:05
#16863
20K
12.43 mi12:31:421:40:248:0525:10
8:06
#16526
Half
13.11 mi12:37:121:45:548:055:30
8:04
#16522
25K
15.53 mi12:56:542:05:368:0519:42
8:08
#16208
30K
18.64 mi13:22:532:31:358:0825:59
8:22
#15761
20M
20.00 mi13:34:342:43:168:1011:41
8:36
#15580
21M
21.00 mi13:43:342:52:168:129:00
9:00
#15420
35K
21.75 mi13:49:492:58:318:136:15
8:21
#15359
23M
23.00 mi14:00:323:09:148:1410:43
8:34
#15243
24M
24.00 mi14:09:043:17:468:148:32
8:32
#15188
40K
24.85 mi14:16:243:25:068:157:20
8:35
#15126
25.2M
25.20 mi14:19:393:28:218:163:15
9:25
#15092
Finish
26.22 mi14:28:093:36:518:178:30
8:20
#15059
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi171145804580416675(Top 59%)5544(Top 45%)5544(Top 306%)
10K6.21 mi3.10 mi16993+1215721+835721+8316944(Top 60%)5671(Top 46%)5671(Top 313%)
15K9.32 mi3.11 mi16863+1305642+795642+7916675(Top 59%)5544(Top 45%)5544(Top 306%)
20K12.43 mi3.11 mi16526+3375447+1955447+19515651(Top 55%)5006(Top 41%)5006(Top 276%)
Half13.11 mi0.68 mi16522+45450-35450-316394(Top 58%)5399(Top 44%)5399(Top 298%)
25K15.53 mi2.42 mi16208+3145284+1665284+16614814(Top 52%)4653(Top 38%)4653(Top 257%)
30K18.64 mi3.11 mi15761+4475089+1955089+19513932(Top 49%)4330(Top 35%)4330(Top 239%)
20M20.00 mi1.36 mi15580+1815022+675022+6714434(Top 51%)4744(Top 39%)4744(Top 262%)
21M21.00 mi1.00 mi15420+1604965+574965+5713542(Top 48%)4390(Top 36%)4390(Top 242%)
35K21.75 mi0.75 mi15359+614947+184947+1814631(Top 52%)5034(Top 41%)5034(Top 278%)
23M23.00 mi1.25 mi15243+1164919+284919+2813689(Top 48%)4640(Top 38%)4640(Top 256%)
24M24.00 mi1.00 mi15188+554916+34916+314750(Top 52%)5238(Top 43%)5238(Top 289%)
40K24.85 mi0.85 mi15126+624911+54911+513952(Top 49%)4938(Top 40%)4938(Top 272%)
25.2M25.20 mi0.35 mi15092+344908+34908+314206(Top 50%)5126(Top 42%)5126(Top 283%)
Finish26.22 mi1.02 mi15059+334908490815208(Top 54%)5593(Top 46%)5593(Top 308%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

16675

Females

5544

F45-49

5544

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

16944

Females

5671

F45-49

5671

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

16675

Females

5544

F45-49

5544

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

15651

Females

5006

F45-49

5006

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

16394

Females

5399

F45-49

5399

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

14814

Females

4653

F45-49

4653

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

13932

Females

4330

F45-49

4330

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

14434

Females

4744

F45-49

4744

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

13542

Females

4390

F45-49

4390

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

14631

Females

5034

F45-49

5034

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

13689

Females

4640

F45-49

4640

23M→24M

23.0 - 24.0 mi

Top 52%
×6story building
+12ft-82ft

Overall

14750

Females

5238

F45-49

5238

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13952

Females

4938

F45-49

4938

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

14206

Females

5126

F45-49

5126

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

15208

Females

5593

F45-49

5593

Passing Analysis

Category:
Athletes Passed
2894
Passed By
839
Net Change
+2055
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17114
5K → 10K355234+121#17114#16993
10K → 15K270140+130#16993#16863
15K → 20K40265+337#16863#16526
20K → Half3632+4#16526#16522
Half → 25K34127+314#16522#16208
25K → 30K48841+447#16208#15761
30K → 20M21231+181#15761#15580
20M → 21M20040+160#15580#15420
21M → 35K8928+61#15420#15359
35K → 23M16347+116#15359#15243
23M → 24M10449+55#15243#15188
24M → 40K9331+62#15188#15126
40K → 25.2M5117+34#15126#15092
25.2M → Finish9057+33#15092#15059
TOTALS2894839+2055
📊

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