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BOSTON MARATHON 2025

Chelsey Liske

Bib: 10507•F

NC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 31%
Gender (Female)
#0 / 12228
Top 13%
Division (F18-39)
#0 / 5469
Top 25%
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
7:07/mi
22:06
↑ 97↓ 3451.5%
10K· 6.21 mi
7:11/mi
44:24
↑ 79↓ 1380.4%
15K· 9.32 mi
7:18/mi
1:07:05
↑ 67↓ 78
20K· 12.43 mi
7:21/mi
1:29:56
↑ 106↓ 860.1%
Half· 13.11 mi
7:15/mi
1:34:53
↑ 19↓ 370.5%
25K· 15.53 mi
7:23/mi
1:52:48
↑ 66↓ 880.2%
30K· 18.64 mi
7:51/mi
2:17:10
↑ 181↓ 1480.2%
20M
7:50/mi
2:27:49
↑ 64↓ 500.2%
21M
8:12/mi
2:36:01
↑ 106↓ 241.6%
35K· 21.75 mi
7:28/mi
2:41:36
↑ 17↓ 861.7%
23M
7:43/mi
2:51:16
↑ 23↓ 630.6%
24M
7:42/mi
2:58:58
↓ 821.3%
40K· 24.85 mi
7:54/mi
3:05:43
↓ 200.3%
25.2M
8:16/mi
3:08:34
↑ 13↓ 160.2%
Finish· 26.22 mi
6:51/mi
3:15:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:53
Pace7:14 /mi
2nd Half
Distance13.11 mi
Time1:40:40
Pace7:41 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:5622:067:0722:06
7:07
-
10K
6.21 mi11:14:1444:247:0922:18
7:11
+0:04
15K
9.32 mi11:36:551:07:057:1222:41
7:18
+0:07
20K
12.43 mi11:59:461:29:567:1422:51
7:21
+0:03
Half
13.11 mi12:04:431:34:537:144:57
7:15
-0:06
25K
15.53 mi12:22:381:52:487:1617:55
7:23
+0:08
30K
18.64 mi12:47:002:17:107:2124:22
7:51
+0:28
20M
20.00 mi12:57:392:27:497:2310:39
7:50
-0:01
21M
21.00 mi13:05:512:36:017:268:12
8:12
+0:22
35K
21.75 mi13:11:262:41:367:265:35
7:28
-0:44
23M
23.00 mi13:21:062:51:167:279:40
7:43
+0:15
24M
24.00 mi13:28:482:58:587:277:42
7:42
-0:01
40K
24.85 mi13:35:333:05:437:286:45
7:54
+0:12
25.2M
25.20 mi13:38:243:08:347:292:51
8:16
+0:22
Finish
26.22 mi13:45:233:15:337:286:59
6:51
-1:25

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

6:51 /mi

Average Pace

7:28 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

56:20

29% of race

Time at Steady Pace

1:09:02

35% of race

Time at Slower Pace

1:10:11

36% of race

Average Pace: 7:27 /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 mi10:51:5622:067:0722:06
7:07
#8778
10K
6.21 mi11:14:1444:247:0922:18
7:11
#8994
15K
9.32 mi11:36:551:07:057:1222:41
7:18
#9327
20K
12.43 mi11:59:461:29:567:1422:51
7:21
#9316
Half
13.11 mi12:04:431:34:537:144:57
7:15
#9334
25K
15.53 mi12:22:381:52:487:1617:55
7:23
#9227
30K
18.64 mi12:47:002:17:107:2124:22
7:51
#9362
20M
20.00 mi12:57:392:27:497:2310:39
7:50
#9317
21M
21.00 mi13:05:512:36:017:268:12
8:12
#9230
35K
21.75 mi13:11:262:41:367:265:35
7:28
#9162
23M
23.00 mi13:21:062:51:167:279:40
7:43
#9050
24M
24.00 mi13:28:482:58:587:277:42
7:42
#9002
40K
24.85 mi13:35:333:05:437:286:45
7:54
#8999
25.2M
25.20 mi13:38:243:08:347:292:51
8:16
#8949
Finish
26.22 mi13:45:233:15:337:286:59
6:51
#8730
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi87781276127610012(Top 35%)1891(Top 15%)1891(Top 35%)
10K6.21 mi3.10 mi8994-2161380-1041380-1049307(Top 33%)1516(Top 12%)1516(Top 28%)
15K9.32 mi3.11 mi9327-3331534-1541534-15410012(Top 35%)1891(Top 15%)1891(Top 35%)
20K12.43 mi3.11 mi9316+111554-201554-209519(Top 34%)1746(Top 14%)1746(Top 32%)
Half13.11 mi0.68 mi9334-181569-151569-159660(Top 34%)1788(Top 15%)1788(Top 33%)
25K15.53 mi2.42 mi9227+1071553+161553+169090(Top 32%)1676(Top 14%)1676(Top 31%)
30K18.64 mi3.11 mi9362-1351664-1111664-11110240(Top 36%)2399(Top 20%)2399(Top 44%)
20M20.00 mi1.36 mi9317+451683-191683-199294(Top 33%)2112(Top 17%)2112(Top 39%)
21M21.00 mi1.00 mi9230+871675+81675+88610(Top 30%)1984(Top 16%)1984(Top 36%)
35K21.75 mi0.75 mi9162+681665+101665+108393(Top 30%)1834(Top 15%)1834(Top 34%)
23M23.00 mi1.25 mi9050+1121664+11664+18038(Top 28%)1835(Top 15%)1835(Top 34%)
24M24.00 mi1.00 mi9002+481676-121676-129124(Top 32%)2380(Top 19%)2380(Top 44%)
40K24.85 mi0.85 mi8999+31711-351711-359441(Top 33%)2642(Top 22%)2642(Top 48%)
25.2M25.20 mi0.35 mi8949+501708+31708+37508(Top 26%)1848(Top 15%)1848(Top 34%)
Finish26.22 mi1.02 mi8730+2191646+621646+624850(Top 17%)821(Top 7%)821(Top 15%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21story building
+97ft-345ft

Overall

10012

Females

1891

F18-39

1891

5K→10K

3.1 - 6.2 mi

Top 33%
×5story building
+79ft-138ft

Overall

9307

Females

1516

F18-39

1516

10K→15K

6.2 - 9.3 mi

Top 35%
×3story building
+67ft-78ft

Overall

10012

Females

1891

F18-39

1891

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9519

Females

1746

F18-39

1746

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

9660

Females

1788

F18-39

1788

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

9090

Females

1676

F18-39

1676

25K→30K

15.5 - 18.6 mi

Top 36%
×9story building
+181ft-148ft

Overall

10240

Females

2399

F18-39

2399

30K→20M

18.6 - 20.0 mi

Top 33%
×5story building
+64ft-50ft

Overall

9294

Females

2112

F18-39

2112

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

8610

Females

1984

F18-39

1984

21M→35K

21.0 - 21.8 mi

Top 30%
×7story building
+17ft-86ft

Overall

8393

Females

1834

F18-39

1834

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

8038

Females

1835

F18-39

1835

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

9124

Females

2380

F18-39

2380

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9441

Females

2642

F18-39

2642

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7508

Females

1848

F18-39

1848

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2story building
+22ft-21ft

Overall

4850

Females

821

F18-39

821

Passing Analysis

Category:
Athletes Passed
1751
Passed By
1703
Net Change
+48
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8778
5K → 10K120336-216#8778#8994
10K → 15K73406-333#8994#9327
15K → 20K185174+11#9327#9316
20K → Half1937-18#9316#9334
Half → 25K19790+107#9334#9227
25K → 30K180315-135#9227#9362
30K → 20M12479+45#9362#9317
20M → 21M13245+87#9317#9230
21M → 35K8315+68#9230#9162
35K → 23M17058+112#9162#9050
23M → 24M9143+48#9050#9002
24M → 40K8683+3#9002#8999
40K → 25.2M6616+50#8999#8949
25.2M → Finish2256+219#8949#8730
TOTALS17511703+48
📊

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