Boston Marathon logo
BOSTON MARATHON 2025

Alison Lilienfeld

Bib: 29816•F

NH

0:00
0:00
/ mi
Be the first to cheer!
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
11:35/mi
35:59
↑ 97↓ 3451.5%
10K· 6.21 mi
12:25/mi
1:14:34
↑ 79↓ 1380.4%
15K· 9.32 mi
12:55/mi
1:54:42
↑ 67↓ 78
20K· 12.43 mi
13:55/mi
2:37:56
↑ 106↓ 860.1%
Half· 13.11 mi
12:29/mi
2:46:27
↑ 19↓ 370.5%
25K· 15.53 mi
13:58/mi
3:20:18
↑ 66↓ 880.2%
30K· 18.64 mi
14:05/mi
4:04:03
↑ 181↓ 1480.2%
20M
15:15/mi
4:24:47
↑ 64↓ 500.2%
21M
15:51/mi
4:40:38
↑ 106↓ 241.6%
35K· 21.75 mi
15:30/mi
4:52:14
↑ 17↓ 861.7%
23M
14:57/mi
5:10:57
↑ 23↓ 630.6%
24M
13:15/mi
5:24:12
↓ 821.3%
40K· 24.85 mi
14:40/mi
5:36:44
↓ 200.3%
25.2M
14:30/mi
5:41:44
↑ 13↓ 160.2%
Finish· 26.22 mi
12:37/mi
5:54:35
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:46:27
Pace12:42 /mi
2nd Half
Distance13.11 mi
Time3:08:08
Pace14:21 /mi
📊Positive Split: 13.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:0035:5911:3535:59
11:35
-
10K
6.21 mi12:32:351:14:3412:0038:35
12:25
+0:50
15K
9.32 mi13:12:431:54:4212:1840:08
12:55
+0:30
20K
12.43 mi13:55:572:37:5612:4343:14
13:55
+1:00
Half
13.11 mi14:04:282:46:2712:428:31
12:29
-1:26
25K
15.53 mi14:38:193:20:1812:5433:51
13:58
+1:29
30K
18.64 mi15:22:044:04:0313:0643:45
14:05
+0:07
20M
20.00 mi15:42:484:24:4713:1420:44
15:15
+1:10
21M
21.00 mi15:58:394:40:3813:2215:51
15:51
+0:36
35K
21.75 mi16:10:154:52:1413:2611:36
15:30
-0:21
23M
23.00 mi16:28:585:10:5713:3118:43
14:57
-0:33
24M
24.00 mi16:42:135:24:1213:3113:15
13:15
-1:42
40K
24.85 mi16:54:455:36:4413:3312:32
14:40
+1:25
25.2M
25.20 mi16:59:455:41:4413:345:00
14:30
-0:10
Finish
26.22 mi17:12:365:54:3513:3212:51
12:37
-1:53

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

11:35 /mi

Average Pace

13:32 /mi

Slowest Pace

15:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:29:19

42% of race

Time at Steady Pace

2:05:50

35% of race

Time at Slower Pace

1:19:26

22% of race

Average Pace: 13:31 /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 mi11:54:0035:5911:3535:59
11:35
#28068
10K
6.21 mi12:32:351:14:3412:0038:35
12:25
#28136
15K
9.32 mi13:12:431:54:4212:1840:08
12:55
#28158
20K
12.43 mi13:55:572:37:5612:4343:14
13:55
#28203
Half
13.11 mi14:04:282:46:2712:428:31
12:29
#28185
25K
15.53 mi14:38:193:20:1812:5433:51
13:58
#28162
30K
18.64 mi15:22:044:04:0313:0643:45
14:05
#28113
20M
20.00 mi15:42:484:24:4713:1420:44
15:15
#28125
21M
21.00 mi15:58:394:40:3813:2215:51
15:51
#28123
35K
21.75 mi16:10:154:52:1413:2611:36
15:30
#28145
23M
23.00 mi16:28:585:10:5713:3118:43
14:57
#28151
24M
24.00 mi16:42:135:24:1213:3113:15
13:15
#28131
40K
24.85 mi16:54:455:36:4413:3312:32
14:40
#28121
25.2M
25.20 mi16:59:455:41:4413:345:00
14:30
#28117
Finish
26.22 mi17:12:365:54:3513:3212:51
12:37
#28106
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi28068120021200228142(Top 99%)12072(Top 99%)12072(Top 221%)
10K6.21 mi3.10 mi28136-6812055-5312055-5328147(Top 99%)12069(Top 99%)12069(Top 221%)
15K9.32 mi3.11 mi28158-2212072-1712072-1728142(Top 99%)12072(Top 99%)12072(Top 221%)
20K12.43 mi3.11 mi28203-4512107-3512107-3528218(Top 99%)12133(Top 99%)12133(Top 222%)
Half13.11 mi0.68 mi28185+1812093+1412093+1427750(Top 98%)11856(Top 97%)11856(Top 217%)
25K15.53 mi2.42 mi28162+2312087+612087+627864(Top 98%)11930(Top 98%)11930(Top 218%)
30K18.64 mi3.11 mi28113+4912055+3212055+3227557(Top 97%)11808(Top 97%)11808(Top 216%)
20M20.00 mi1.36 mi28125-1212067-1212067-1227970(Top 98%)12038(Top 98%)12038(Top 220%)
21M21.00 mi1.00 mi28123+212072-512072-527740(Top 98%)11926(Top 98%)11926(Top 218%)
35K21.75 mi0.75 mi28145-2212092-2012092-2028155(Top 99%)12140(Top 99%)12140(Top 222%)
23M23.00 mi1.25 mi28151-612095-312095-327889(Top 98%)12046(Top 99%)12046(Top 220%)
24M24.00 mi1.00 mi28131+2012086+912086+927101(Top 95%)11695(Top 96%)11695(Top 214%)
40K24.85 mi0.85 mi28121+1012083+312083+327593(Top 97%)11916(Top 97%)11916(Top 218%)
25.2M25.20 mi0.35 mi28117+412081+212081+226734(Top 94%)11539(Top 94%)11539(Top 211%)
Finish26.22 mi1.02 mi28106+1112078+312078+327361(Top 96%)11803(Top 97%)11803(Top 216%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21story building
+97ft-345ft

Overall

28142

Females

12072

F18-39

12072

5K→10K

3.1 - 6.2 mi

Top 99%
×5story building
+79ft-138ft

Overall

28147

Females

12069

F18-39

12069

10K→15K

6.2 - 9.3 mi

Top 99%
×3story building
+67ft-78ft

Overall

28142

Females

12072

F18-39

12072

15K→20K

9.3 - 12.4 mi

Top 99%
×5story building
+106ft-86ft

Overall

28218

Females

12133

F18-39

12133

20K→Half

12.4 - 13.1 mi

Top 98%
×2story building
+19ft-37ft

Overall

27750

Females

11856

F18-39

11856

Half→25K

13.1 - 15.5 mi

Top 98%
×4story building
+66ft-88ft

Overall

27864

Females

11930

F18-39

11930

25K→30K

15.5 - 18.6 mi

Top 97%
×9story building
+181ft-148ft

Overall

27557

Females

11808

F18-39

11808

30K→20M

18.6 - 20.0 mi

Top 98%
×5story building
+64ft-50ft

Overall

27970

Females

12038

F18-39

12038

20M→21M

20.0 - 21.0 mi

Top 98%
×8story building
+106ft-24ft

Overall

27740

Females

11926

F18-39

11926

21M→35K

21.0 - 21.8 mi

Top 99%
×7story building
+17ft-86ft

Overall

28155

Females

12140

F18-39

12140

35K→23M

21.8 - 23.0 mi

Top 98%
×5story building
+23ft-63ft

Overall

27889

Females

12046

F18-39

12046

23M→24M

23.0 - 24.0 mi

Top 95%
×6story building
+12ft-82ft

Overall

27101

Females

11695

F18-39

11695

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

27593

Females

11916

F18-39

11916

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

26734

Females

11539

F18-39

11539

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2story building
+22ft-21ft

Overall

27361

Females

11803

F18-39

11803

Passing Analysis

Category:
Athletes Passed
289
Passed By
327
Net Change
-38
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28068
5K → 10K36104-68#28068#28136
10K → 15K2345-22#28136#28158
15K → 20K2065-45#28158#28203
20K → Half213+18#28203#28185
Half → 25K329+23#28185#28162
25K → 30K6415+49#28162#28113
30K → 20M820-12#28113#28125
20M → 21M1816+2#28125#28123
21M → 35K325-22#28123#28145
35K → 23M1016-6#28145#28151
23M → 24M222+20#28151#28131
24M → 40K122+10#28131#28121
40K → 25.2M40+4#28121#28117
25.2M → Finish165+11#28117#28106
TOTALS289327-38
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing