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BOSTON MARATHON 2025

Laura Ericson

Bib: 28134•F

SC

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

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
9:31/mi
29:33
↑ 97↓ 3451.5%
10K· 6.21 mi
9:07/mi
57:51
↑ 79↓ 1380.4%
15K· 9.32 mi
9:35/mi
1:27:36
↑ 67↓ 78
20K· 12.43 mi
10:15/mi
1:59:26
↑ 106↓ 860.1%
Half· 13.11 mi
9:36/mi
2:05:59
↑ 19↓ 370.5%
25K· 15.53 mi
11:41/mi
2:34:18
↑ 66↓ 880.2%
30K· 18.64 mi
11:20/mi
3:09:30
↑ 181↓ 1480.2%
20M
11:04/mi
3:24:32
↑ 64↓ 500.2%
21M
13:36/mi
3:38:08
↑ 106↓ 241.6%
35K· 21.75 mi
10:23/mi
3:45:54
↑ 17↓ 861.7%
23M
11:12/mi
3:59:55
↑ 23↓ 630.6%
24M
10:26/mi
4:10:21
↓ 821.3%
40K· 24.85 mi
11:22/mi
4:20:04
↓ 200.3%
25.2M
11:59/mi
4:24:12
↑ 13↓ 160.2%
Finish· 26.22 mi
10:00/mi
4:34:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:59
Pace9:37 /mi
2nd Half
Distance13.11 mi
Time2:28:24
Pace11:19 /mi
📊Positive Split: 17.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:5029:339:3129:33
9:31
-
10K
6.21 mi12:15:0857:519:1928:18
9:07
-0:24
15K
9.32 mi12:44:531:27:369:2429:45
9:35
+0:28
20K
12.43 mi13:16:431:59:269:3731:50
10:15
+0:40
Half
13.11 mi13:23:162:05:599:376:33
9:36
-0:39
25K
15.53 mi13:51:352:34:189:5628:19
11:41
+2:05
30K
18.64 mi14:26:473:09:3010:1035:12
11:20
-0:21
20M
20.00 mi14:41:493:24:3210:1415:02
11:04
-0:16
21M
21.00 mi14:55:253:38:0810:2313:36
13:36
+2:32
35K
21.75 mi15:03:113:45:5410:237:46
10:23
-3:13
23M
23.00 mi15:17:123:59:5510:2614:01
11:12
+0:49
24M
24.00 mi15:27:384:10:2110:2610:26
10:26
-0:46
40K
24.85 mi15:37:214:20:0410:289:43
11:22
+0:56
25.2M
25.20 mi15:41:294:24:1210:294:08
11:59
+0:37
Finish
26.22 mi15:51:404:34:2310:2810:11
10:00
-1:59

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

9:07 /mi

Average Pace

10:28 /mi

Slowest Pace

13:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:09

34% of race

Time at Steady Pace

1:00:13

22% of race

Time at Slower Pace

2:00:01

44% of race

Average Pace: 10:28 /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 mi11:46:5029:339:3129:33
9:31
#24286
10K
6.21 mi12:15:0857:519:1928:18
9:07
#23609
15K
9.32 mi12:44:531:27:369:2429:45
9:35
#23745
20K
12.43 mi13:16:431:59:269:3731:50
10:15
#24055
Half
13.11 mi13:23:162:05:599:376:33
9:36
#24037
25K
15.53 mi13:51:352:34:189:5628:19
11:41
#24576
30K
18.64 mi14:26:473:09:3010:1035:12
11:20
#24591
20M
20.00 mi14:41:493:24:3210:1415:02
11:04
#24546
21M
21.00 mi14:55:253:38:0810:2313:36
13:36
#24645
35K
21.75 mi15:03:113:45:5410:237:46
10:23
#24602
23M
23.00 mi15:17:123:59:5510:2614:01
11:12
#24550
24M
24.00 mi15:27:384:10:2110:2610:26
10:26
#24486
40K
24.85 mi15:37:214:20:0410:289:43
11:22
#24469
25.2M
25.20 mi15:41:294:24:1210:294:08
11:59
#24456
Finish
26.22 mi15:51:404:34:2310:2810:11
10:00
#24399
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi242869843984323946(Top 84%)9633(Top 79%)9633(Top 176%)
10K6.21 mi3.10 mi23609+6779488+3559488+35522866(Top 81%)9057(Top 74%)9057(Top 166%)
15K9.32 mi3.11 mi23745-1369542-549542-5423946(Top 84%)9633(Top 79%)9633(Top 176%)
20K12.43 mi3.11 mi24055-3109721-1799721-17924739(Top 87%)10124(Top 83%)10124(Top 185%)
Half13.11 mi0.68 mi24037+189713+89713+823881(Top 84%)9642(Top 79%)9642(Top 176%)
25K15.53 mi2.42 mi24576-53910017-30410017-30426076(Top 92%)10902(Top 89%)10902(Top 199%)
30K18.64 mi3.11 mi24591-1510053-3610053-3624596(Top 87%)10177(Top 83%)10177(Top 186%)
20M20.00 mi1.36 mi24546+4510040+1310040+1323722(Top 84%)9804(Top 80%)9804(Top 179%)
21M21.00 mi1.00 mi24645-9910110-7010110-7025777(Top 91%)10935(Top 89%)10935(Top 200%)
35K21.75 mi0.75 mi24602+4310096+1410096+1422931(Top 81%)9525(Top 78%)9525(Top 174%)
23M23.00 mi1.25 mi24550+5210086+1010086+1023666(Top 83%)9932(Top 81%)9932(Top 182%)
24M24.00 mi1.00 mi24486+6410061+2510061+2522659(Top 80%)9468(Top 77%)9468(Top 173%)
40K24.85 mi0.85 mi24469+1710064-310064-323902(Top 84%)10121(Top 83%)10121(Top 185%)
25.2M25.20 mi0.35 mi24456+1310059+510059+523232(Top 82%)9783(Top 80%)9783(Top 179%)
Finish26.22 mi1.02 mi24399+5710049+1010049+1022941(Top 81%)9642(Top 79%)9642(Top 176%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

23946

Females

9633

F18-39

9633

5K→10K

3.1 - 6.2 mi

Top 81%
×5story building
+79ft-138ft

Overall

22866

Females

9057

F18-39

9057

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

23946

Females

9633

F18-39

9633

15K→20K

9.3 - 12.4 mi

Top 87%
×5story building
+106ft-86ft

Overall

24739

Females

10124

F18-39

10124

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

23881

Females

9642

F18-39

9642

Half→25K

13.1 - 15.5 mi

Top 92%
×4story building
+66ft-88ft

Overall

26076

Females

10902

F18-39

10902

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

24596

Females

10177

F18-39

10177

30K→20M

18.6 - 20.0 mi

Top 84%
×5story building
+64ft-50ft

Overall

23722

Females

9804

F18-39

9804

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

25777

Females

10935

F18-39

10935

21M→35K

21.0 - 21.8 mi

Top 81%
×7story building
+17ft-86ft

Overall

22931

Females

9525

F18-39

9525

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

23666

Females

9932

F18-39

9932

23M→24M

23.0 - 24.0 mi

Top 80%
×6story building
+12ft-82ft

Overall

22659

Females

9468

F18-39

9468

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

23902

Females

10121

F18-39

10121

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23232

Females

9783

F18-39

9783

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2story building
+22ft-21ft

Overall

22941

Females

9642

F18-39

9642

Passing Analysis

Category:
Athletes Passed
1534
Passed By
1647
Net Change
-113
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24286
5K → 10K72144+677#24286#23609
10K → 15K128264-136#23609#23745
15K → 20K48358-310#23745#24055
20K → Half3416+18#24055#24037
Half → 25K18557-539#24037#24576
25K → 30K129144-15#24576#24591
30K → 20M7025+45#24591#24546
20M → 21M36135-99#24546#24645
21M → 35K5310+43#24645#24602
35K → 23M8129+52#24602#24550
23M → 24M8016+64#24550#24486
24M → 40K4225+17#24486#24469
40K → 25.2M2411+13#24469#24456
25.2M → Finish7013+57#24456#24399
TOTALS15341647-113
📊

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