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BOSTON MARATHON 2025

Karin Zumbühl Sadi

Bib: 20674•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 45%
Gender (Female)
#0 / 12228
Top 30%
Masters (Masters Women)
#0 / 6759
Top 15%
Division (F40-44)
#0 / 1718
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
7:35/mi
23:35
↑ 97↓ 3451.5%
10K· 6.21 mi
7:33/mi
47:02
↑ 79↓ 1380.4%
15K· 9.32 mi
7:39/mi
1:10:48
↑ 67↓ 78
20K· 12.43 mi
7:51/mi
1:35:10
↑ 106↓ 860.1%
Half· 13.11 mi
7:39/mi
1:40:23
↑ 19↓ 370.5%
25K· 15.53 mi
7:55/mi
1:59:35
↑ 66↓ 880.2%
30K· 18.64 mi
8:03/mi
2:24:37
↑ 181↓ 1480.2%
20M
8:17/mi
2:35:52
↑ 64↓ 500.2%
21M
8:54/mi
2:44:46
↑ 106↓ 241.6%
35K· 21.75 mi
8:05/mi
2:50:49
↑ 17↓ 861.7%
23M
8:30/mi
3:01:27
↑ 23↓ 630.6%
24M
8:17/mi
3:09:44
↓ 821.3%
40K· 24.85 mi
8:19/mi
3:16:51
↓ 200.3%
25.2M
9:11/mi
3:20:01
↑ 13↓ 160.2%
Finish· 26.22 mi
8:24/mi
3:28:35
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:23
Pace7:39 /mi
2nd Half
Distance13.11 mi
Time1:48:12
Pace8:15 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2623:357:3523:35
7:35
-
10K
6.21 mi11:39:5347:027:3423:27
7:33
-0:02
15K
9.32 mi12:03:391:10:487:3623:46
7:39
+0:06
20K
12.43 mi12:28:011:35:107:3924:22
7:51
+0:12
Half
13.11 mi12:33:141:40:237:395:13
7:39
-0:12
25K
15.53 mi12:52:261:59:357:4219:12
7:55
+0:16
30K
18.64 mi13:17:282:24:377:4525:02
8:03
+0:08
20M
20.00 mi13:28:432:35:527:4811:15
8:17
+0:14
21M
21.00 mi13:37:372:44:467:518:54
8:54
+0:37
35K
21.75 mi13:43:402:50:497:516:03
8:05
-0:49
23M
23.00 mi13:54:183:01:277:5310:38
8:30
+0:25
24M
24.00 mi14:02:353:09:447:548:17
8:17
-0:13
40K
24.85 mi14:09:423:16:517:557:07
8:19
+0:02
25.2M
25.20 mi14:12:523:20:017:563:10
9:11
+0:52
Finish
26.22 mi14:21:263:28:357:588:34
8:24
-0:47

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

7:33 /mi

Average Pace

7:58 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:23

48% of race

Time at Steady Pace

1:09:49

33% of race

Time at Slower Pace

38:23

18% of race

Average Pace: 7:57 /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 mi11:16:2623:357:3523:35
7:35
#13046
10K
6.21 mi11:39:5347:027:3423:27
7:33
#12749
15K
9.32 mi12:03:391:10:487:3623:46
7:39
#12832
20K
12.43 mi12:28:011:35:107:3924:22
7:51
#12989
Half
13.11 mi12:33:141:40:237:395:13
7:39
#12982
25K
15.53 mi12:52:261:59:357:4219:12
7:55
#13013
30K
18.64 mi13:17:282:24:377:4525:02
8:03
#12721
20M
20.00 mi13:28:432:35:527:4811:15
8:17
#12676
21M
21.00 mi13:37:372:44:467:518:54
8:54
#12663
35K
21.75 mi13:43:402:50:497:516:03
8:05
#12655
23M
23.00 mi13:54:183:01:277:5310:38
8:30
#12681
24M
24.00 mi14:02:353:09:447:548:17
8:17
#12679
40K
24.85 mi14:09:423:16:517:557:07
8:19
#12657
25.2M
25.20 mi14:12:523:20:017:563:10
9:11
#12651
Finish
26.22 mi14:21:263:28:357:588:34
8:24
#12784
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi130463340334013064(Top 46%)3483(Top 28%)3483(Top 203%)
10K6.21 mi3.10 mi12749+2973204+1363204+13612560(Top 44%)3127(Top 26%)3127(Top 182%)
15K9.32 mi3.11 mi12832-833289-853289-8513064(Top 46%)3483(Top 28%)3483(Top 203%)
20K12.43 mi3.11 mi12989-1573440-1513440-15113628(Top 48%)3890(Top 32%)3890(Top 226%)
Half13.11 mi0.68 mi12982+73436+43436+413032(Top 46%)3518(Top 29%)3518(Top 205%)
25K15.53 mi2.42 mi13013-313484-483484-4813254(Top 47%)3797(Top 31%)3797(Top 221%)
30K18.64 mi3.11 mi12721+2923381+1033381+10311810(Top 42%)3200(Top 26%)3200(Top 186%)
20M20.00 mi1.36 mi12676+453400-193400-1912362(Top 44%)3626(Top 30%)3626(Top 211%)
21M21.00 mi1.00 mi12663+133427-273427-2712938(Top 46%)4081(Top 33%)4081(Top 238%)
35K21.75 mi0.75 mi12655+83450-233450-2312857(Top 45%)4076(Top 33%)4076(Top 237%)
23M23.00 mi1.25 mi12681-263491-413491-4113277(Top 47%)4415(Top 36%)4415(Top 257%)
24M24.00 mi1.00 mi12679+23515-243515-2413152(Top 46%)4391(Top 36%)4391(Top 256%)
40K24.85 mi0.85 mi12657+223534-193534-1912317(Top 43%)4086(Top 33%)4086(Top 238%)
25.2M25.20 mi0.35 mi12651+63550-163550-1612850(Top 45%)4408(Top 36%)4408(Top 257%)
Finish26.22 mi1.02 mi12784-1333643-933643-9315630(Top 55%)5812(Top 48%)5812(Top 338%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

13064

Females

3483

F40-44

3483

5K→10K

3.1 - 6.2 mi

Top 44%
×5story building
+79ft-138ft

Overall

12560

Females

3127

F40-44

3127

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

13064

Females

3483

F40-44

3483

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

13628

Females

3890

F40-44

3890

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

13032

Females

3518

F40-44

3518

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

13254

Females

3797

F40-44

3797

25K→30K

15.5 - 18.6 mi

Top 42%
×9story building
+181ft-148ft

Overall

11810

Females

3200

F40-44

3200

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

12362

Females

3626

F40-44

3626

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

12938

Females

4081

F40-44

4081

21M→35K

21.0 - 21.8 mi

Top 45%
×7story building
+17ft-86ft

Overall

12857

Females

4076

F40-44

4076

35K→23M

21.8 - 23.0 mi

Top 47%
×5story building
+23ft-63ft

Overall

13277

Females

4415

F40-44

4415

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

13152

Females

4391

F40-44

4391

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12317

Females

4086

F40-44

4086

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12850

Females

4408

F40-44

4408

25.2M→Finish

25.2 - 26.2 mi

Top 55%
×2story building
+22ft-21ft

Overall

15630

Females

5812

F40-44

5812

Passing Analysis

Category:
Athletes Passed
1997
Passed By
1735
Net Change
+262
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13046
5K → 10K456159+297#13046#12749
10K → 15K168251-83#12749#12832
15K → 20K150307-157#12832#12989
20K → Half3932+7#12989#12982
Half → 25K144175-31#12982#13013
25K → 30K38189+292#13013#12721
30K → 20M13893+45#12721#12676
20M → 21M120107+13#12676#12663
21M → 35K6860+8#12663#12655
35K → 23M98124-26#12655#12681
23M → 24M7169+2#12681#12679
24M → 40K9169+22#12679#12657
40K → 25.2M3832+6#12657#12651
25.2M → Finish35168-133#12651#12784
TOTALS19971735+262
📊

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