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BOSTON MARATHON 2025

Liz Lierman

Bib: 22631•F

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 45%
Masters (Masters Women)
#0 / 6759
Top 32%
Division (F45-49)
#0 / 1813
Top 39%
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
8:24/mi
26:07
↑ 97↓ 3451.5%
10K· 6.21 mi
8:18/mi
51:54
↑ 79↓ 1380.4%
15K· 9.32 mi
8:21/mi
1:17:50
↑ 67↓ 78
20K· 12.43 mi
8:27/mi
1:44:06
↑ 106↓ 860.1%
Half· 13.11 mi
8:15/mi
1:49:44
↑ 19↓ 370.5%
25K· 15.53 mi
8:26/mi
2:10:12
↑ 66↓ 880.2%
30K· 18.64 mi
8:33/mi
2:36:46
↑ 181↓ 1480.2%
20M
8:33/mi
2:48:23
↑ 64↓ 500.2%
21M
8:51/mi
2:57:14
↑ 106↓ 241.6%
35K· 21.75 mi
8:24/mi
3:03:31
↑ 17↓ 861.7%
23M
8:38/mi
3:14:19
↑ 23↓ 630.6%
24M
8:20/mi
3:22:39
↓ 821.3%
40K· 24.85 mi
8:38/mi
3:30:02
↓ 200.3%
25.2M
9:02/mi
3:33:09
↑ 13↓ 160.2%
Finish· 26.22 mi
7:40/mi
3:40:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:44
Pace8:22 /mi
2nd Half
Distance13.11 mi
Time1:51:14
Pace8:29 /mi
📊Positive Split: 1.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:2526:078:2426:07
8:24
-
10K
6.21 mi11:49:1251:548:2125:47
8:18
-0:06
15K
9.32 mi12:15:081:17:508:2125:56
8:21
+0:03
20K
12.43 mi12:41:241:44:068:2326:16
8:27
+0:06
Half
13.11 mi12:47:021:49:448:225:38
8:15
-0:12
25K
15.53 mi13:07:302:10:128:2320:28
8:26
+0:11
30K
18.64 mi13:34:042:36:468:2526:34
8:33
+0:07
20M
20.00 mi13:45:412:48:238:2511:37
8:33
0:00
21M
21.00 mi13:54:322:57:148:268:51
8:51
+0:18
35K
21.75 mi14:00:493:03:318:266:17
8:24
-0:27
23M
23.00 mi14:11:373:14:198:2710:48
8:38
+0:14
24M
24.00 mi14:19:573:22:398:278:20
8:20
-0:18
40K
24.85 mi14:27:203:30:028:277:23
8:38
+0:18
25.2M
25.20 mi14:30:273:33:098:283:07
9:02
+0:24
Finish
26.22 mi14:38:163:40:588:267:49
7:40
-1:22

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

7:40 /mi

Average Pace

8:26 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:54

48% of race

Time at Steady Pace

1:55:04

52% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:26 /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 mi11:23:2526:078:2426:07
8:24
#19346
10K
6.21 mi11:49:1251:548:2125:47
8:18
#18944
15K
9.32 mi12:15:081:17:508:2125:56
8:21
#18729
20K
12.43 mi12:41:241:44:068:2326:16
8:27
#18493
Half
13.11 mi12:47:021:49:448:225:38
8:15
#18449
25K
15.53 mi13:07:302:10:128:2320:28
8:26
#18144
30K
18.64 mi13:34:042:36:468:2526:34
8:33
#17535
20M
20.00 mi13:45:412:48:238:2511:37
8:33
#17259
21M
21.00 mi13:54:322:57:148:268:51
8:51
#16946
35K
21.75 mi14:00:493:03:318:266:17
8:24
#16856
23M
23.00 mi14:11:373:14:198:2710:48
8:38
#16677
24M
24.00 mi14:19:573:22:398:278:20
8:20
#16512
40K
24.85 mi14:27:203:30:028:277:23
8:38
#16399
25.2M
25.20 mi14:30:273:33:098:283:07
9:02
#16332
Finish
26.22 mi14:38:163:40:588:267:49
7:40
#16112
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi193467106710618365(Top 65%)6528(Top 53%)6528(Top 360%)
10K6.21 mi3.10 mi18944+4026871+2356871+23518552(Top 65%)6621(Top 54%)6621(Top 365%)
15K9.32 mi3.11 mi18729+2156750+1216750+12118365(Top 65%)6528(Top 53%)6528(Top 360%)
20K12.43 mi3.11 mi18493+2366616+1346616+13417919(Top 63%)6293(Top 51%)6293(Top 347%)
Half13.11 mi0.68 mi18449+446584+326584+3217668(Top 62%)6122(Top 50%)6122(Top 338%)
25K15.53 mi2.42 mi18144+3056441+1436441+14316826(Top 59%)5753(Top 47%)5753(Top 317%)
30K18.64 mi3.11 mi17535+6096142+2996142+29915096(Top 53%)4957(Top 41%)4957(Top 273%)
20M20.00 mi1.36 mi17259+2766001+1416001+14114121(Top 50%)4585(Top 37%)4585(Top 253%)
21M21.00 mi1.00 mi16946+3135845+1565845+15612650(Top 45%)3960(Top 32%)3960(Top 218%)
35K21.75 mi0.75 mi16856+905807+385807+3814890(Top 52%)5179(Top 42%)5179(Top 286%)
23M23.00 mi1.25 mi16677+1795740+675740+6714120(Top 50%)4864(Top 40%)4864(Top 268%)
24M24.00 mi1.00 mi16512+1655667+735667+7313513(Top 48%)4579(Top 37%)4579(Top 253%)
40K24.85 mi0.85 mi16399+1135633+345633+3414309(Top 50%)5138(Top 42%)5138(Top 283%)
25.2M25.20 mi0.35 mi16332+675603+305603+3012116(Top 43%)4057(Top 33%)4057(Top 224%)
Finish26.22 mi1.02 mi16112+2205495+1085495+10810538(Top 37%)3253(Top 27%)3253(Top 179%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

18365

Females

6528

F45-49

6528

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

18552

Females

6621

F45-49

6621

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

18365

Females

6528

F45-49

6528

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

17919

Females

6293

F45-49

6293

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17668

Females

6122

F45-49

6122

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

16826

Females

5753

F45-49

5753

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

15096

Females

4957

F45-49

4957

30K→20M

18.6 - 20.0 mi

Top 50%
×5story building
+64ft-50ft

Overall

14121

Females

4585

F45-49

4585

20M→21M

20.0 - 21.0 mi

Top 45%
×8story building
+106ft-24ft

Overall

12650

Females

3960

F45-49

3960

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

14890

Females

5179

F45-49

5179

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

14120

Females

4864

F45-49

4864

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

13513

Females

4579

F45-49

4579

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

14309

Females

5138

F45-49

5138

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

12116

Females

4057

F45-49

4057

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2story building
+22ft-21ft

Overall

10538

Females

3253

F45-49

3253

Passing Analysis

Category:
Athletes Passed
3690
Passed By
456
Net Change
+3234
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19346
5K → 10K517115+402#19346#18944
10K → 15K30590+215#18944#18729
15K → 20K32690+236#18729#18493
20K → Half6117+44#18493#18449
Half → 25K33833+305#18449#18144
25K → 30K61910+609#18144#17535
30K → 20M2837+276#17535#17259
20M → 21M3174+313#17259#16946
21M → 35K10313+90#16946#16856
35K → 23M21031+179#16856#16677
23M → 24M17510+165#16677#16512
24M → 40K13724+113#16512#16399
40K → 25.2M747+67#16399#16332
25.2M → Finish2255+220#16332#16112
TOTALS3690456+3234
📊

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