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BOSTON MARATHON 2025

Kathryn Smith

MA

Bib: 27167 F

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
9:54/mi
30:46
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
9:25/mi
1:00:02
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:17/mi
1:28:54
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:28/mi
1:58:19
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
9:27/mi
2:04:46
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
10:06/mi
2:29:16
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:42/mi
2:59:23
↑ 181↓ 1480.2%
138 ft elev
20M
9:46/mi
3:12:40
↑ 64↓ 500.2%
148 ft elev
21M
10:04/mi
3:22:44
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:09/mi
3:29:35
↑ 17↓ 861.7%
156 ft elev
23M
9:14/mi
3:41:09
↑ 23↓ 630.6%
116 ft elev
24M
9:08/mi
3:50:17
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:18/mi
3:58:14
↓ 200.3%
20 ft elev
25.2M
10:09/mi
4:01:44
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:00/mi
4:10:54
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
2:04:469:31 /mi⚡ faster
2nd Half
2:06:089:37 /mi+1.1%
Positive split — 1.1% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:2030:469:5430:46
9:54
-
10K
6.21 mi12:16:361:00:029:4029:16
9:25
-0:29
15K
9.32 mi12:45:281:28:549:3228:52
9:17
-0:08
20K
12.43 mi13:14:531:58:199:3129:25
9:28
+0:11
Half
13.11 mi13:21:202:04:469:316:27
9:27
-0:01
25K
15.53 mi13:45:502:29:169:3724:30
10:06
+0:39
30K
18.64 mi14:15:572:59:239:3730:07
9:42
-0:24
20M
20.00 mi14:29:143:12:409:3813:17
9:46
+0:04
21M
21.00 mi14:39:183:22:449:3910:04
10:04
+0:18
35K
21.75 mi14:46:093:29:359:386:51
9:09
-0:55
23M
23.00 mi14:57:433:41:099:3711:34
9:14
+0:05
24M
24.00 mi15:06:513:50:179:369:08
9:08
-0:06
40K
24.85 mi15:14:483:58:149:357:57
9:18
+0:10
25.2M
25.20 mi15:18:184:01:449:363:30
10:09
+0:51
Finish
26.22 mi15:27:284:10:549:359:10
9:00
-1:09

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

9:00 /mi

Average Pace

9:35 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

3:02:04

73% of race

Time at Steady Pace

1:08:50

27% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:34 /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 mi11:47:2030:469:5430:46
9:54
#25359
10K
6.21 mi12:16:361:00:029:4029:16
9:25
#24637
15K
9.32 mi12:45:281:28:549:3228:52
9:17
#24139
20K
12.43 mi13:14:531:58:199:3129:25
9:28
#23797
Half
13.11 mi13:21:202:04:469:316:27
9:27
#23780
25K
15.53 mi13:45:502:29:169:3724:30
10:06
#23714
30K
18.64 mi14:15:572:59:239:3730:07
9:42
#23161
20M
20.00 mi14:29:143:12:409:3813:17
9:46
#22946
21M
21.00 mi14:39:183:22:449:3910:04
10:04
#22736
35K
21.75 mi14:46:093:29:359:386:51
9:09
#22588
23M
23.00 mi14:57:433:41:099:3711:34
9:14
#22337
24M
24.00 mi15:06:513:50:179:369:08
9:08
#22170
40K
24.85 mi15:14:483:58:149:357:57
9:18
#22018
25.2M
25.20 mi15:18:184:01:449:363:30
10:09
#21949
Finish
26.22 mi15:27:284:10:549:359:10
9:00
#21844
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi2535910402104022319091999199
10K6.21 mi3.10 mi24637+72210026+37610026+3762388796149614
15K9.32 mi3.11 mi24139+4989746+2809746+2802319091999199
20K12.43 mi3.11 mi23797+3429577+1699577+1692279890329032
Half13.11 mi0.68 mi23780+179565+129565+122343193839383
25K15.53 mi2.42 mi23714+669535+309535+302352194909490
30K18.64 mi3.11 mi23161+5539278+2579278+2572068480408040
20M20.00 mi1.36 mi22946+2159181+979181+972023379357935
21M21.00 mi1.00 mi22736+2109080+1019080+1011859171167116
35K21.75 mi0.75 mi22588+1489012+689012+681903074817481
23M23.00 mi1.25 mi22337+2518906+1068906+1061753867576757
24M24.00 mi1.00 mi22170+1678836+708836+701807970897089
40K24.85 mi0.85 mi22018+1528767+698767+691788870877087
25.2M25.20 mi0.35 mi21949+698736+318736+311778370357035
Finish26.22 mi1.02 mi21844+1058700+368700+361907576547654

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

23190

Females

9199

F18-39

9199

5K→10K

3.1 - 6.2 mi

Top 84%
×5story building
+79ft-138ft

Overall

23887

Females

9614

F18-39

9614

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

23190

Females

9199

F18-39

9199

15K→20K

9.3 - 12.4 mi

Top 80%
×5story building
+106ft-86ft

Overall

22798

Females

9032

F18-39

9032

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

23431

Females

9383

F18-39

9383

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

23521

Females

9490

F18-39

9490

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

20684

Females

8040

F18-39

8040

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

20233

Females

7935

F18-39

7935

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

18591

Females

7116

F18-39

7116

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

19030

Females

7481

F18-39

7481

35K→23M

21.8 - 23.0 mi

Top 62%
×5story building
+23ft-63ft

Overall

17538

Females

6757

F18-39

6757

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

18079

Females

7089

F18-39

7089

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17888

Females

7087

F18-39

7087

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17783

Females

7035

F18-39

7035

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

19075

Females

7654

F18-39

7654

Passing Analysis

Category:
Athletes Passed
3683
Passed By
168
Net Change
+3515
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25359
5K → 10K73816+722#25359#24637
10K → 15K50911+498#24637#24139
15K → 20K35715+342#24139#23797
20K → Half2912+17#23797#23780
Half → 25K14882+66#23780#23714
25K → 30K5618+553#23714#23161
30K → 20M2216+215#23161#22946
20M → 21M2122+210#22946#22736
21M → 35K1491+148#22736#22588
35K → 23M2521+251#22588#22337
23M → 24M1692+167#22337#22170
24M → 40K1553+152#22170#22018
40K → 25.2M712+69#22018#21949
25.2M → Finish1127+105#21949#21844
TOTALS3683168+3515

Passing Charts

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