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BOSTON MARATHON 2025

Amy Smyth

Bib: 21738•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 43%
Masters (Masters Women)
#0 / 6759
Top 30%
Division (F45-49)
#0 / 1813
Top 36%
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
8:19/mi
25:49
↑ 97↓ 3451.5%
10K· 6.21 mi
8:20/mi
51:42
↑ 79↓ 1380.4%
15K· 9.32 mi
8:17/mi
1:17:26
↑ 67↓ 78
20K· 12.43 mi
8:17/mi
1:43:09
↑ 106↓ 860.1%
Half· 13.11 mi
8:11/mi
1:48:44
↑ 19↓ 370.5%
25K· 15.53 mi
8:21/mi
2:08:59
↑ 66↓ 880.2%
30K· 18.64 mi
8:36/mi
2:35:42
↑ 181↓ 1480.2%
20M
8:38/mi
2:47:26
↑ 64↓ 500.2%
21M
9:06/mi
2:56:32
↑ 106↓ 241.6%
35K· 21.75 mi
8:04/mi
3:02:34
↑ 17↓ 861.7%
23M
8:25/mi
3:13:06
↑ 23↓ 630.6%
24M
8:07/mi
3:21:13
↓ 821.3%
40K· 24.85 mi
8:10/mi
3:28:12
↓ 200.3%
25.2M
8:54/mi
3:31:16
↑ 13↓ 160.2%
Finish· 26.22 mi
7:55/mi
3:39:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:44
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time1:50:36
Pace8:26 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:2125:498:1925:49
8:19
-
10K
6.21 mi11:48:1451:428:1925:53
8:20
+0:01
15K
9.32 mi12:13:581:17:268:1825:44
8:17
-0:03
20K
12.43 mi12:39:411:43:098:1825:43
8:17
0:00
Half
13.11 mi12:45:161:48:448:185:35
8:11
-0:06
25K
15.53 mi13:05:312:08:598:1820:15
8:21
+0:10
30K
18.64 mi13:32:142:35:428:2126:43
8:36
+0:15
20M
20.00 mi13:43:582:47:268:2211:44
8:38
+0:02
21M
21.00 mi13:53:042:56:328:249:06
9:06
+0:28
35K
21.75 mi13:59:063:02:348:246:02
8:04
-1:02
23M
23.00 mi14:09:383:13:068:2410:32
8:25
+0:21
24M
24.00 mi14:17:453:21:138:238:07
8:07
-0:18
40K
24.85 mi14:24:443:28:128:236:59
8:10
+0:03
25.2M
25.20 mi14:27:483:31:168:233:04
8:54
+0:44
Finish
26.22 mi14:35:523:39:208:228:04
7:55
-0:59

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

7:55 /mi

Average Pace

8:22 /mi

Slowest Pace

9:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:27:10

94% of race

Time at Steady Pace

12:10

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:22 /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 mi11:22:2125:498:1925:49
8:19
#18763
10K
6.21 mi11:48:1451:428:1925:53
8:20
#18737
15K
9.32 mi12:13:581:17:268:1825:44
8:17
#18449
20K
12.43 mi12:39:411:43:098:1825:43
8:17
#17997
Half
13.11 mi12:45:161:48:448:185:35
8:11
#17942
25K
15.53 mi13:05:312:08:598:1820:15
8:21
#17601
30K
18.64 mi13:32:142:35:428:2126:43
8:36
#17150
20M
20.00 mi13:43:582:47:268:2211:44
8:38
#16960
21M
21.00 mi13:53:042:56:328:249:06
9:06
#16745
35K
21.75 mi13:59:063:02:348:246:02
8:04
#16578
23M
23.00 mi14:09:383:13:068:2410:32
8:25
#16303
24M
24.00 mi14:17:453:21:138:238:07
8:07
#16103
40K
24.85 mi14:24:443:28:128:236:59
8:10
#15918
25.2M
25.20 mi14:27:483:31:168:233:04
8:54
#15832
Finish
26.22 mi14:35:523:39:208:228:04
7:55
#15705
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi187636780678017916(Top 63%)6269(Top 51%)6269(Top 346%)
10K6.21 mi3.10 mi18737+266758+226758+2218738(Top 66%)6732(Top 55%)6732(Top 371%)
15K9.32 mi3.11 mi18449+2886595+1636595+16317916(Top 63%)6269(Top 51%)6269(Top 346%)
20K12.43 mi3.11 mi17997+4526335+2606335+26016790(Top 59%)5664(Top 46%)5664(Top 312%)
Half13.11 mi0.68 mi17942+556305+306305+3017110(Top 60%)5848(Top 48%)5848(Top 323%)
25K15.53 mi2.42 mi17601+3416119+1866119+18616230(Top 57%)5445(Top 45%)5445(Top 300%)
30K18.64 mi3.11 mi17150+4515904+2155904+21515370(Top 54%)5115(Top 42%)5115(Top 282%)
20M20.00 mi1.36 mi16960+1905816+885816+8814599(Top 51%)4839(Top 40%)4839(Top 267%)
21M21.00 mi1.00 mi16745+2155727+895727+8914053(Top 49%)4673(Top 38%)4673(Top 258%)
35K21.75 mi0.75 mi16578+1675651+765651+7612619(Top 44%)3978(Top 33%)3978(Top 219%)
23M23.00 mi1.25 mi16303+2755520+1315520+13112741(Top 45%)4139(Top 34%)4139(Top 228%)
24M24.00 mi1.00 mi16103+2005438+825438+8211964(Top 42%)3803(Top 31%)3803(Top 210%)
40K24.85 mi0.85 mi15918+1855359+795359+7911297(Top 40%)3578(Top 29%)3578(Top 197%)
25.2M25.20 mi0.35 mi15832+865322+375322+3711074(Top 39%)3563(Top 29%)3563(Top 197%)
Finish26.22 mi1.02 mi15705+1275272+505272+5012227(Top 43%)4063(Top 33%)4063(Top 224%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

17916

Females

6269

F45-49

6269

5K→10K

3.1 - 6.2 mi

Top 66%
×5story building
+79ft-138ft

Overall

18738

Females

6732

F45-49

6732

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

17916

Females

6269

F45-49

6269

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

16790

Females

5664

F45-49

5664

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

17110

Females

5848

F45-49

5848

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

16230

Females

5445

F45-49

5445

25K→30K

15.5 - 18.6 mi

Top 54%
×9story building
+181ft-148ft

Overall

15370

Females

5115

F45-49

5115

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

14599

Females

4839

F45-49

4839

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

14053

Females

4673

F45-49

4673

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

12619

Females

3978

F45-49

3978

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

12741

Females

4139

F45-49

4139

23M→24M

23.0 - 24.0 mi

Top 42%
×6story building
+12ft-82ft

Overall

11964

Females

3803

F45-49

3803

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11297

Females

3578

F45-49

3578

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

11074

Females

3563

F45-49

3563

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

12227

Females

4063

F45-49

4063

Passing Analysis

Category:
Athletes Passed
3532
Passed By
474
Net Change
+3058
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18763
5K → 10K276250+26#18763#18737
10K → 15K35567+288#18737#18449
15K → 20K47826+452#18449#17997
20K → Half6813+55#17997#17942
Half → 25K36019+341#17942#17601
25K → 30K48433+451#17601#17150
30K → 20M20818+190#17150#16960
20M → 21M23015+215#16960#16745
21M → 35K1714+167#16745#16578
35K → 23M28510+275#16578#16303
23M → 24M2022+200#16303#16103
24M → 40K1883+185#16103#15918
40K → 25.2M860+86#15918#15832
25.2M → Finish14114+127#15832#15705
TOTALS3532474+3058
📊

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