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BOSTON MARATHON 2025

Liz Giannopoulos

Bib: 31257 F GB

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
10:06/mi
31:22
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
10:27/mi
1:03:49
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
12:06/mi
1:41:24
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
12:12/mi
2:19:19
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
11:44/mi
2:27:19
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
13:47/mi
3:00:43
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
13:19/mi
3:42:05
↑ 181↓ 1480.2%
138 ft elev
20M
13:02/mi
3:59:48
↑ 64↓ 500.2%
148 ft elev
21M
14:45/mi
4:14:33
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
12:18/mi
4:23:45
↑ 17↓ 861.7%
156 ft elev
23M
12:53/mi
4:39:53
↑ 23↓ 630.6%
116 ft elev
24M
11:56/mi
4:51:49
↓ 821.3%
34 ft elev
40K· 24.85 mi
14:04/mi
5:03:51
↓ 200.3%
20 ft elev
25.2M
13:44/mi
5:08:35
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
10:47/mi
5:19:34
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:27:19
Pace11:14 /mi
2nd Half
Distance13.11 mi
Time2:52:15
Pace13:08 /mi
📊Positive Split: 16.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:4431:2210:0631:22
10:06
-
10K
6.21 mi12:28:111:03:4910:1632:27
10:27
+0:21
15K
9.32 mi13:05:461:41:2410:5337:35
12:06
+1:39
20K
12.43 mi13:43:412:19:1911:1337:55
12:12
+0:06
Half
13.11 mi13:51:412:27:1911:148:00
11:44
-0:28
25K
15.53 mi14:25:053:00:4311:3833:24
13:47
+2:03
30K
18.64 mi15:06:273:42:0511:5541:22
13:19
-0:28
20M
20.00 mi15:24:103:59:4811:5917:43
13:02
-0:17
21M
21.00 mi15:38:554:14:3312:0714:45
14:45
+1:43
35K
21.75 mi15:48:074:23:4512:089:12
12:18
-2:27
23M
23.00 mi16:04:154:39:5312:1016:08
12:53
+0:35
24M
24.00 mi16:16:114:51:4912:1011:56
11:56
-0:57
40K
24.85 mi16:28:135:03:5112:1312:02
14:04
+2:08
25.2M
25.20 mi16:32:575:08:3512:154:44
13:44
-0:20
Finish
26.22 mi16:43:565:19:3412:1210:59
10:47
-2:57

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

10:06 /mi

Average Pace

12:12 /mi

Slowest Pace

14:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:14:48

23% of race

Time at Steady Pace

2:00:46

38% of race

Time at Slower Pace

2:04:00

39% of race

Average Pace: 12:11 /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 mi11:55:4431:2210:0631:22
10:06
#25809
10K
6.21 mi12:28:111:03:4910:1632:27
10:27
#26042
15K
9.32 mi13:05:461:41:2410:5337:35
12:06
#26911
20K
12.43 mi13:43:412:19:1911:1337:55
12:12
#27048
Half
13.11 mi13:51:412:27:1911:148:00
11:44
#27061
25K
15.53 mi14:25:053:00:4311:3833:24
13:47
#27242
30K
18.64 mi15:06:273:42:0511:5541:22
13:19
#27213
20M
20.00 mi15:24:103:59:4811:5917:43
13:02
#27185
21M
21.00 mi15:38:554:14:3312:0714:45
14:45
#27176
35K
21.75 mi15:48:074:23:4512:089:12
12:18
#27150
23M
23.00 mi16:04:154:39:5312:1016:08
12:53
#27130
24M
24.00 mi16:16:114:51:4912:1011:56
11:56
#27089
40K
24.85 mi16:28:135:03:5112:1312:02
14:04
#27108
25.2M
25.20 mi16:32:575:08:3512:154:44
13:44
#27096
Finish
26.22 mi16:43:565:19:3412:1210:59
10:47
#27042
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi25809106461064627685(Top 97%)11796(Top 96%)11796(Top 651%)
10K6.21 mi3.10 mi26042-23310801-15510801-15526171(Top 92%)10892(Top 89%)10892(Top 601%)
15K9.32 mi3.11 mi26911-86911304-50311304-50327685(Top 97%)11796(Top 96%)11796(Top 651%)
20K12.43 mi3.11 mi27048-13711394-9011394-9027279(Top 96%)11572(Top 95%)11572(Top 638%)
Half13.11 mi0.68 mi27061-1311409-1511409-1527240(Top 96%)11555(Top 94%)11555(Top 637%)
25K15.53 mi2.42 mi27242-18111525-11611525-11627774(Top 98%)11874(Top 97%)11874(Top 655%)
30K18.64 mi3.11 mi27213+2911531-611531-626975(Top 95%)11476(Top 94%)11476(Top 633%)
20M20.00 mi1.36 mi27185+2811514+1711514+1726475(Top 93%)11271(Top 92%)11271(Top 622%)
21M21.00 mi1.00 mi27176+911515-111515-126935(Top 95%)11533(Top 94%)11533(Top 636%)
35K21.75 mi0.75 mi27150+2611506+911506+926236(Top 92%)11211(Top 92%)11211(Top 618%)
23M23.00 mi1.25 mi27130+2011505+111505+126251(Top 92%)11224(Top 92%)11224(Top 619%)
24M24.00 mi1.00 mi27089+4111489+1611489+1625581(Top 90%)10924(Top 89%)10924(Top 603%)
40K24.85 mi0.85 mi27108-1911506-1711506-1727225(Top 96%)11754(Top 96%)11754(Top 648%)
25.2M25.20 mi0.35 mi27096+1211502+411502+425943(Top 91%)11155(Top 91%)11155(Top 615%)
Finish26.22 mi1.02 mi27042+5411476+2611476+2624893(Top 88%)10610(Top 87%)10610(Top 585%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21story building
+97ft-345ft

Overall

27685

Females

11796

F45-49

11796

5K→10K

3.1 - 6.2 mi

Top 92%
×5story building
+79ft-138ft

Overall

26171

Females

10892

F45-49

10892

10K→15K

6.2 - 9.3 mi

Top 97%
×3story building
+67ft-78ft

Overall

27685

Females

11796

F45-49

11796

15K→20K

9.3 - 12.4 mi

Top 96%
×5story building
+106ft-86ft

Overall

27279

Females

11572

F45-49

11572

20K→Half

12.4 - 13.1 mi

Top 96%
×2story building
+19ft-37ft

Overall

27240

Females

11555

F45-49

11555

Half→25K

13.1 - 15.5 mi

Top 98%
×4story building
+66ft-88ft

Overall

27774

Females

11874

F45-49

11874

25K→30K

15.5 - 18.6 mi

Top 95%
×9story building
+181ft-148ft

Overall

26975

Females

11476

F45-49

11476

30K→20M

18.6 - 20.0 mi

Top 93%
×5story building
+64ft-50ft

Overall

26475

Females

11271

F45-49

11271

20M→21M

20.0 - 21.0 mi

Top 95%
×8story building
+106ft-24ft

Overall

26935

Females

11533

F45-49

11533

21M→35K

21.0 - 21.8 mi

Top 92%
×7story building
+17ft-86ft

Overall

26236

Females

11211

F45-49

11211

35K→23M

21.8 - 23.0 mi

Top 92%
×5story building
+23ft-63ft

Overall

26251

Females

11224

F45-49

11224

23M→24M

23.0 - 24.0 mi

Top 90%
×6story building
+12ft-82ft

Overall

25581

Females

10924

F45-49

10924

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

27225

Females

11754

F45-49

11754

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

25943

Females

11155

F45-49

11155

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2story building
+22ft-21ft

Overall

24893

Females

10610

F45-49

10610

Passing Analysis

Category:
Athletes Passed
590
Passed By
1823
Net Change
-1233
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25809
5K → 10K115348-233#25809#26042
10K → 15K6875-869#26042#26911
15K → 20K61198-137#26911#27048
20K → Half1427-13#27048#27061
Half → 25K27208-181#27061#27242
25K → 30K9566+29#27242#27213
30K → 20M4214+28#27213#27185
20M → 21M2819+9#27185#27176
21M → 35K304+26#27176#27150
35K → 23M3818+20#27150#27130
23M → 24M465+41#27130#27089
24M → 40K1736-19#27089#27108
40K → 25.2M153+12#27108#27096
25.2M → Finish562+54#27096#27042
TOTALS5901823-1233
📊

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