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BOSTON MARATHON 2025

Sierra Downs

Bib: 15707•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 40%
Gender (Female)
#0 / 12228
Top 24%
Division (F18-39)
#0 / 5469
Top 40%
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
7:39/mi
23:46
↑ 97↓ 3451.5%
10K· 6.21 mi
7:33/mi
47:14
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:10:43
↑ 67↓ 78
20K· 12.43 mi
7:39/mi
1:34:29
↑ 106↓ 860.1%
Half· 13.11 mi
7:31/mi
1:39:37
↑ 19↓ 370.5%
25K· 15.53 mi
7:49/mi
1:58:33
↑ 66↓ 880.2%
30K· 18.64 mi
7:55/mi
2:23:10
↑ 181↓ 1480.2%
20M
7:50/mi
2:33:49
↑ 64↓ 500.2%
21M
8:04/mi
2:41:53
↑ 106↓ 241.6%
35K· 21.75 mi
7:32/mi
2:47:31
↑ 17↓ 861.7%
23M
8:00/mi
2:57:32
↑ 23↓ 630.6%
24M
8:10/mi
3:05:42
↓ 821.3%
40K· 24.85 mi
8:16/mi
3:12:46
↓ 200.3%
25.2M
8:54/mi
3:15:50
↑ 13↓ 160.2%
Finish· 26.22 mi
7:52/mi
3:23:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:37
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:44:14
Pace7:57 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:1323:467:3923:46
7:39
-
10K
6.21 mi11:19:4147:147:3623:28
7:33
-0:06
15K
9.32 mi11:43:101:10:437:3523:29
7:34
+0:01
20K
12.43 mi12:06:561:34:297:3623:46
7:39
+0:05
Half
13.11 mi12:12:041:39:377:365:08
7:31
-0:08
25K
15.53 mi12:31:001:58:337:3818:56
7:49
+0:18
30K
18.64 mi12:55:372:23:107:4124:37
7:55
+0:06
20M
20.00 mi13:06:162:33:497:4110:39
7:50
-0:05
21M
21.00 mi13:14:202:41:537:438:04
8:04
+0:14
35K
21.75 mi13:19:582:47:317:425:38
7:32
-0:32
23M
23.00 mi13:29:592:57:327:4310:01
8:00
+0:28
24M
24.00 mi13:38:093:05:427:448:10
8:10
+0:10
40K
24.85 mi13:45:133:12:467:457:04
8:16
+0:06
25.2M
25.20 mi13:48:173:15:507:463:04
8:54
+0:38
Finish
26.22 mi13:56:183:23:517:478:01
7:52
-1:02

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

7:31 /mi

Average Pace

7:47 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:20:47

98% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

3:04

2% of race

Average Pace: 7:46 /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 mi10:56:1323:467:3923:46
7:39
#13532
10K
6.21 mi11:19:4147:147:3623:28
7:33
#13062
15K
9.32 mi11:43:101:10:437:3523:29
7:34
#12752
20K
12.43 mi12:06:561:34:297:3623:46
7:39
#12515
Half
13.11 mi12:12:041:39:377:365:08
7:31
#12491
25K
15.53 mi12:31:001:58:337:3818:56
7:49
#12453
30K
18.64 mi12:55:372:23:107:4124:37
7:55
#12080
20M
20.00 mi13:06:162:33:497:4110:39
7:50
#11826
21M
21.00 mi13:14:202:41:537:438:04
8:04
#11557
35K
21.75 mi13:19:582:47:317:425:38
7:32
#11424
23M
23.00 mi13:29:592:57:327:4310:01
8:00
#11295
24M
24.00 mi13:38:093:05:427:448:10
8:10
#11316
40K
24.85 mi13:45:133:12:467:457:04
8:16
#11311
25.2M
25.20 mi13:48:173:15:507:463:04
8:54
#11294
Finish
26.22 mi13:56:183:23:517:478:01
7:52
#11293
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi135323615361512259(Top 43%)3046(Top 25%)3046(Top 56%)
10K6.21 mi3.10 mi13062+4703378+2373378+23712606(Top 44%)3148(Top 26%)3148(Top 58%)
15K9.32 mi3.11 mi12752+3103239+1393239+13912259(Top 43%)3046(Top 25%)3046(Top 56%)
20K12.43 mi3.11 mi12515+2373155+843155+8411960(Top 42%)2972(Top 24%)2972(Top 54%)
Half13.11 mi0.68 mi12491+243143+123143+1211980(Top 42%)2930(Top 24%)2930(Top 54%)
25K15.53 mi2.42 mi12453+383165-223165-2212440(Top 44%)3356(Top 27%)3356(Top 61%)
30K18.64 mi3.11 mi12080+3733034+1313034+13110833(Top 38%)2706(Top 22%)2706(Top 49%)
20M20.00 mi1.36 mi11826+2542939+952939+959325(Top 33%)2143(Top 18%)2143(Top 39%)
21M21.00 mi1.00 mi11557+2692845+942845+947801(Top 27%)1647(Top 13%)1647(Top 30%)
35K21.75 mi0.75 mi11424+1332801+442801+448901(Top 31%)2095(Top 17%)2095(Top 38%)
23M23.00 mi1.25 mi11295+1292772+292772+2910059(Top 35%)2771(Top 23%)2771(Top 51%)
24M24.00 mi1.00 mi11316-212826-542826-5412364(Top 44%)3970(Top 32%)3970(Top 73%)
40K24.85 mi0.85 mi11311+52856-302856-3011977(Top 42%)3898(Top 32%)3898(Top 71%)
25.2M25.20 mi0.35 mi11294+172872-162872-1611233(Top 40%)3607(Top 29%)3607(Top 66%)
Finish26.22 mi1.02 mi11293+12903-312903-3111946(Top 42%)3894(Top 32%)3894(Top 71%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21story building
+97ft-345ft

Overall

12259

Females

3046

F18-39

3046

5K→10K

3.1 - 6.2 mi

Top 44%
×5story building
+79ft-138ft

Overall

12606

Females

3148

F18-39

3148

10K→15K

6.2 - 9.3 mi

Top 43%
×3story building
+67ft-78ft

Overall

12259

Females

3046

F18-39

3046

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

11960

Females

2972

F18-39

2972

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

11980

Females

2930

F18-39

2930

Half→25K

13.1 - 15.5 mi

Top 44%
×4story building
+66ft-88ft

Overall

12440

Females

3356

F18-39

3356

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

10833

Females

2706

F18-39

2706

30K→20M

18.6 - 20.0 mi

Top 33%
×5story building
+64ft-50ft

Overall

9325

Females

2143

F18-39

2143

20M→21M

20.0 - 21.0 mi

Top 27%
×8story building
+106ft-24ft

Overall

7801

Females

1647

F18-39

1647

21M→35K

21.0 - 21.8 mi

Top 31%
×7story building
+17ft-86ft

Overall

8901

Females

2095

F18-39

2095

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

10059

Females

2771

F18-39

2771

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

12364

Females

3970

F18-39

3970

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11977

Females

3898

F18-39

3898

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

11233

Females

3607

F18-39

3607

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11946

Females

3894

F18-39

3894

Passing Analysis

Category:
Athletes Passed
3053
Passed By
814
Net Change
+2239
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13532
5K → 10K56393+470#13532#13062
10K → 15K39181+310#13062#12752
15K → 20K31578+237#12752#12515
20K → Half4117+24#12515#12491
Half → 25K171133+38#12491#12453
25K → 30K43865+373#12453#12080
30K → 20M26814+254#12080#11826
20M → 21M2789+269#11826#11557
21M → 35K14310+133#11557#11424
35K → 23M17445+129#11424#11295
23M → 24M7697-21#11295#11316
24M → 40K7570+5#11316#11311
40K → 25.2M4730+17#11311#11294
25.2M → Finish7372+1#11294#11293
TOTALS3053814+2239
📊

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