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BOSTON MARATHON 2025

Sara Kunz

Bib: 9829•F

ID

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 36%
Division (F18-39)
#0 / 5469
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
7:21/mi
22:51
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
47:01
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:11:58
↑ 67↓ 78
20K· 12.43 mi
8:06/mi
1:37:08
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:42:33
↑ 19↓ 370.5%
25K· 15.53 mi
8:12/mi
2:02:25
↑ 66↓ 880.2%
30K· 18.64 mi
8:32/mi
2:28:55
↑ 181↓ 1480.2%
20M
8:36/mi
2:40:36
↑ 64↓ 500.2%
21M
8:53/mi
2:49:29
↑ 106↓ 241.6%
35K· 21.75 mi
8:01/mi
2:55:29
↑ 17↓ 861.7%
23M
8:42/mi
3:06:22
↑ 23↓ 630.6%
24M
8:35/mi
3:14:57
↓ 821.3%
40K· 24.85 mi
8:31/mi
3:22:14
↓ 200.3%
25.2M
9:23/mi
3:25:28
↑ 13↓ 160.2%
Finish· 26.22 mi
8:13/mi
3:33:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:33
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time1:51:17
Pace8:29 /mi
📊Positive Split: 8.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:0122:517:2122:51
7:21
-
10K
6.21 mi11:13:1147:017:3424:10
7:47
+0:26
15K
9.32 mi11:38:081:11:587:4324:57
8:02
+0:15
20K
12.43 mi12:03:181:37:087:4925:10
8:06
+0:04
Half
13.11 mi12:08:431:42:337:495:25
7:56
-0:10
25K
15.53 mi12:28:352:02:257:5319:52
8:12
+0:16
30K
18.64 mi12:55:052:28:557:5926:30
8:32
+0:20
20M
20.00 mi13:06:462:40:368:0211:41
8:36
+0:04
21M
21.00 mi13:15:392:49:298:048:53
8:53
+0:17
35K
21.75 mi13:21:392:55:298:046:00
8:01
-0:52
23M
23.00 mi13:32:323:06:228:0610:53
8:42
+0:41
24M
24.00 mi13:41:073:14:578:078:35
8:35
-0:07
40K
24.85 mi13:48:243:22:148:087:17
8:31
-0:04
25.2M
25.20 mi13:51:383:25:288:093:14
9:23
+0:52
Finish
26.22 mi14:00:003:33:508:108:22
8:13
-1:10

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

7:21 /mi

Average Pace

8:10 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

52:26

25% of race

Time at Steady Pace

1:24:21

39% of race

Time at Slower Pace

1:17:03

36% of race

Average Pace: 8:09 /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 mi10:49:0122:517:2122:51
7:21
#10915
10K
6.21 mi11:13:1147:017:3424:10
7:47
#12728
15K
9.32 mi11:38:081:11:587:4324:57
8:02
#13940
20K
12.43 mi12:03:181:37:087:4925:10
8:06
#14393
Half
13.11 mi12:08:431:42:337:495:25
7:56
#14422
25K
15.53 mi12:28:352:02:257:5319:52
8:12
#14557
30K
18.64 mi12:55:052:28:557:5926:30
8:32
#14617
20M
20.00 mi13:06:462:40:368:0211:41
8:36
#14583
21M
21.00 mi13:15:392:49:298:048:53
8:53
#14434
35K
21.75 mi13:21:392:55:298:046:00
8:01
#14357
23M
23.00 mi13:32:323:06:228:0610:53
8:42
#14364
24M
24.00 mi13:41:073:14:578:078:35
8:35
#14360
40K
24.85 mi13:48:243:22:148:087:17
8:31
#14304
25.2M
25.20 mi13:51:383:25:288:093:14
9:23
#14284
Finish
26.22 mi14:00:003:33:508:108:22
8:13
#14242
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi109152244224416279(Top 57%)5299(Top 43%)5299(Top 97%)
10K6.21 mi3.10 mi12728-18133195-9513195-95114635(Top 52%)4329(Top 35%)4329(Top 79%)
15K9.32 mi3.11 mi13940-12123932-7373932-73716279(Top 57%)5299(Top 43%)5299(Top 97%)
20K12.43 mi3.11 mi14393-4534231-2994231-29915645(Top 55%)5000(Top 41%)5000(Top 91%)
Half13.11 mi0.68 mi14422-294247-164247-1615458(Top 54%)4858(Top 40%)4858(Top 89%)
25K15.53 mi2.42 mi14557-1354369-1224369-12215284(Top 54%)4886(Top 40%)4886(Top 89%)
30K18.64 mi3.11 mi14617-604453-844453-8414944(Top 53%)4869(Top 40%)4869(Top 89%)
20M20.00 mi1.36 mi14583+344461-84461-814428(Top 51%)4738(Top 39%)4738(Top 87%)
21M21.00 mi1.00 mi14434+1494395+664395+6612851(Top 45%)4048(Top 33%)4048(Top 74%)
35K21.75 mi0.75 mi14357+774372+234372+2312446(Top 44%)3881(Top 32%)3881(Top 71%)
23M23.00 mi1.25 mi14364-74413-414413-4114519(Top 51%)5077(Top 42%)5077(Top 93%)
24M24.00 mi1.00 mi14360+44436-234436-2315061(Top 53%)5402(Top 44%)5402(Top 99%)
40K24.85 mi0.85 mi14304+564443-74443-713573(Top 48%)4739(Top 39%)4739(Top 87%)
25.2M25.20 mi0.35 mi14284+204441+24441+213923(Top 49%)4966(Top 41%)4966(Top 91%)
Finish26.22 mi1.02 mi14242+424449-84449-814349(Top 51%)5122(Top 42%)5122(Top 94%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

16279

Females

5299

F18-39

5299

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

14635

Females

4329

F18-39

4329

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

16279

Females

5299

F18-39

5299

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

15645

Females

5000

F18-39

5000

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

15458

Females

4858

F18-39

4858

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

15284

Females

4886

F18-39

4886

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

14944

Females

4869

F18-39

4869

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

14428

Females

4738

F18-39

4738

20M→21M

20.0 - 21.0 mi

Top 45%
×8story building
+106ft-24ft

Overall

12851

Females

4048

F18-39

4048

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

12446

Females

3881

F18-39

3881

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

14519

Females

5077

F18-39

5077

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

15061

Females

5402

F18-39

5402

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13573

Females

4739

F18-39

4739

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13923

Females

4966

F18-39

4966

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2story building
+22ft-21ft

Overall

14349

Females

5122

F18-39

5122

Passing Analysis

Category:
Athletes Passed
1384
Passed By
4711
Net Change
-3327
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10915
5K → 10K141827-1813#10915#12728
10K → 15K251237-1212#12728#13940
15K → 20K104557-453#13940#14393
20K → Half2756-29#14393#14422
Half → 25K137272-135#14422#14557
25K → 30K224284-60#14557#14617
30K → 20M151117+34#14617#14583
20M → 21M18839+149#14583#14434
21M → 35K9922+77#14434#14357
35K → 23M108115-7#14357#14364
23M → 24M7571+4#14364#14360
24M → 40K9539+56#14360#14304
40K → 25.2M4121+20#14304#14284
25.2M → Finish9654+42#14284#14242
TOTALS13844711-3327
📊

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