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BOSTON MARATHON 2025

Amy Steffen

Bib: 10478•F

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 32%
Gender (Female)
#0 / 12228
Top 15%
Masters (Masters Women)
#0 / 6759
Top 5%
Division (F45-49)
#0 / 1813
Top 6%
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
7:05/mi
22:00
↑ 97↓ 3451.5%
10K· 6.21 mi
7:03/mi
43:55
↑ 79↓ 1380.4%
15K· 9.32 mi
7:04/mi
1:05:52
↑ 67↓ 78
20K· 12.43 mi
7:12/mi
1:28:15
↑ 106↓ 860.1%
Half· 13.11 mi
7:09/mi
1:33:08
↑ 19↓ 370.5%
25K· 15.53 mi
7:24/mi
1:51:04
↑ 66↓ 880.2%
30K· 18.64 mi
7:51/mi
2:15:28
↑ 181↓ 1480.2%
20M
7:55/mi
2:26:13
↑ 64↓ 500.2%
21M
8:21/mi
2:34:34
↑ 106↓ 241.6%
35K· 21.75 mi
7:46/mi
2:40:23
↑ 17↓ 861.7%
23M
9:11/mi
2:51:53
↑ 23↓ 630.6%
24M
7:38/mi
2:59:31
↓ 821.3%
40K· 24.85 mi
7:42/mi
3:06:06
↓ 200.3%
25.2M
8:33/mi
3:09:03
↑ 13↓ 160.2%
Finish· 26.22 mi
7:31/mi
3:16:43
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:08
Pace7:06 /mi
2nd Half
Distance13.11 mi
Time1:43:35
Pace7:54 /mi
📊Positive Split: 11.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:0622:007:0522:00
7:05
-
10K
6.21 mi11:10:0143:557:0421:55
7:03
-0:02
15K
9.32 mi11:31:581:05:527:0421:57
7:04
+0:01
20K
12.43 mi11:54:211:28:157:0622:23
7:12
+0:08
Half
13.11 mi11:59:141:33:087:064:53
7:09
-0:03
25K
15.53 mi12:17:101:51:047:0917:56
7:24
+0:15
30K
18.64 mi12:41:342:15:287:1624:24
7:51
+0:27
20M
20.00 mi12:52:192:26:137:1910:45
7:55
+0:04
21M
21.00 mi13:00:402:34:347:228:21
8:21
+0:26
35K
21.75 mi13:06:292:40:237:225:49
7:46
-0:35
23M
23.00 mi13:17:592:51:537:2811:30
9:11
+1:25
24M
24.00 mi13:25:372:59:317:297:38
7:38
-1:33
40K
24.85 mi13:32:123:06:067:296:35
7:42
+0:04
25.2M
25.20 mi13:35:093:09:037:302:57
8:33
+0:51
Finish
26.22 mi13:42:493:16:437:307:40
7:31
-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

7:03 /mi

Average Pace

7:30 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:08

47% of race

Time at Steady Pace

1:20:47

41% of race

Time at Slower Pace

22:48

12% of race

Average Pace: 7:30 /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 mi10:48:0622:007:0522:00
7:05
#8492
10K
6.21 mi11:10:0143:557:0421:55
7:03
#8422
15K
9.32 mi11:31:581:05:527:0421:57
7:04
#8259
20K
12.43 mi11:54:211:28:157:0622:23
7:12
#8193
Half
13.11 mi11:59:141:33:087:064:53
7:09
#8200
25K
15.53 mi12:17:101:51:047:0917:56
7:24
#8296
30K
18.64 mi12:41:342:15:287:1624:24
7:51
#8572
20M
20.00 mi12:52:192:26:137:1910:45
7:55
#8617
21M
21.00 mi13:00:402:34:347:228:21
8:21
#8646
35K
21.75 mi13:06:292:40:237:225:49
7:46
#8700
23M
23.00 mi13:17:592:51:537:2811:30
9:11
#9261
24M
24.00 mi13:25:372:59:317:297:38
7:38
#9227
40K
24.85 mi13:32:123:06:067:296:35
7:42
#9143
25.2M
25.20 mi13:35:093:09:037:302:57
8:33
#9122
Finish
26.22 mi13:42:493:16:437:307:40
7:31
#9093
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi8492116211628101(Top 29%)1076(Top 9%)1076(Top 59%)
10K6.21 mi3.10 mi8422+701152+101152+108339(Top 29%)1123(Top 9%)1123(Top 62%)
15K9.32 mi3.11 mi8259+1631102+501102+508101(Top 29%)1076(Top 9%)1076(Top 59%)
20K12.43 mi3.11 mi8193+661098+41098+48263(Top 29%)1218(Top 10%)1218(Top 67%)
Half13.11 mi0.68 mi8200-71109-111109-118814(Top 31%)1426(Top 12%)1426(Top 79%)
25K15.53 mi2.42 mi8296-961162-531162-539146(Top 32%)1702(Top 14%)1702(Top 94%)
30K18.64 mi3.11 mi8572-2761328-1661328-16610317(Top 36%)2440(Top 20%)2440(Top 135%)
20M20.00 mi1.36 mi8617-451386-581386-589829(Top 35%)2354(Top 19%)2354(Top 130%)
21M21.00 mi1.00 mi8646-291433-471433-479549(Top 34%)2395(Top 20%)2395(Top 132%)
35K21.75 mi0.75 mi8700-541470-371470-3710638(Top 37%)2909(Top 24%)2909(Top 160%)
23M23.00 mi1.25 mi9261-5611754-2841754-28417262(Top 61%)6578(Top 54%)6578(Top 363%)
24M24.00 mi1.00 mi9227+341764-101764-108669(Top 31%)2164(Top 18%)2164(Top 119%)
40K24.85 mi0.85 mi9143+841767-31767-38108(Top 29%)2035(Top 17%)2035(Top 112%)
25.2M25.20 mi0.35 mi9122+211777-101777-109145(Top 32%)2582(Top 21%)2582(Top 142%)
Finish26.22 mi1.02 mi9093+291809-321809-329373(Top 33%)2701(Top 22%)2701(Top 149%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

8101

Females

1076

F45-49

1076

5K→10K

3.1 - 6.2 mi

Top 29%
×5story building
+79ft-138ft

Overall

8339

Females

1123

F45-49

1123

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

8101

Females

1076

F45-49

1076

15K→20K

9.3 - 12.4 mi

Top 29%
×5story building
+106ft-86ft

Overall

8263

Females

1218

F45-49

1218

20K→Half

12.4 - 13.1 mi

Top 31%
×2story building
+19ft-37ft

Overall

8814

Females

1426

F45-49

1426

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

9146

Females

1702

F45-49

1702

25K→30K

15.5 - 18.6 mi

Top 36%
×9story building
+181ft-148ft

Overall

10317

Females

2440

F45-49

2440

30K→20M

18.6 - 20.0 mi

Top 35%
×5story building
+64ft-50ft

Overall

9829

Females

2354

F45-49

2354

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9549

Females

2395

F45-49

2395

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

10638

Females

2909

F45-49

2909

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

17262

Females

6578

F45-49

6578

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8669

Females

2164

F45-49

2164

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8108

Females

2035

F45-49

2035

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

9145

Females

2582

F45-49

2582

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

9373

Females

2701

F45-49

2701

Passing Analysis

Category:
Athletes Passed
1515
Passed By
2116
Net Change
-601
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8492
5K → 10K251181+70#8492#8422
10K → 15K23471+163#8422#8259
15K → 20K184118+66#8259#8193
20K → Half2431-7#8193#8200
Half → 25K95191-96#8200#8296
25K → 30K134410-276#8296#8572
30K → 20M83128-45#8572#8617
20M → 21M85114-29#8617#8646
21M → 35K4296-54#8646#8700
35K → 23M25586-561#8700#9261
23M → 24M9763+34#9261#9227
24M → 40K12238+84#9227#9143
40K → 25.2M4423+21#9143#9122
25.2M → Finish9566+29#9122#9093
TOTALS15152116-601
📊

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