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BOSTON MARATHON 2025

Amber Thielbar

Bib: 177•F

WY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 10%
Gender (Female)
#0 / 12228
Top 1%
Masters (Masters Women)
#0 / 6759
Top 0.2%
Division (F40-44)
#0 / 1718
Top 0.6%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:06
Rank: #1616
Start → 5K
19:06 | 6:09/mi
10K· 6.21 mi
38:48
Rank: #2110 (-494)
5K → 10K
19:42 | 6:20/mi
15K· 9.32 mi
58:46
Rank: #2417 (-307)
10K → 15K
19:58 | 6:26/mi
20K· 12.43 mi
1:19:02
Rank: #2608 (-191)
15K → 20K
20:16 | 6:31/mi
Half· 13.11 mi
1:23:26
Rank: #2644 (-36)
20K → Half
4:24 | 6:27/mi
25K· 15.53 mi
1:39:15
Rank: #2678 (-34)
Half → 25K
15:49 | 6:31/mi
30K· 18.64 mi
2:00:27
Rank: #2799 (-121)
25K → 30K
21:12 | 6:49/mi
20M
2:10:03
Rank: #2887 (-88)
30K → 20M
9:36 | 7:04/mi
21M
2:17:26
Rank: #2927 (-40)
20M → 21M
7:23 | 7:23/mi
35K· 21.75 mi
2:22:32
Rank: #2922 (+5)
21M → 35K
5:06 | 6:49/mi
23M
2:31:02
Rank: #2868 (+54)
35K → 23M
8:30 | 6:47/mi
24M
2:37:51
Rank: #2861 (+7)
23M → 24M
6:49 | 6:49/mi
40K· 24.85 mi
2:43:40
Rank: #2838 (+23)
24M → 40K
5:49 | 6:49/mi
25.2M
2:46:03
Rank: #2780 (+58)
40K → 25.2M
2:23 | 6:54/mi
Finish· 26.22 mi
2:53:05
Rank: #2829 (-49)
25.2M → Finish
7:02 | 6:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:26
Pace6:22 /mi
2nd Half
Distance13.11 mi
Time1:29:39
Pace6:50 /mi
📊Positive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:06:0819:066:0919:06
6:09
-
10K
6.21 mi10:25:5038:486:1519:42
6:20
+0:11
15K
9.32 mi10:45:4858:466:1819:58
6:26
+0:06
20K
12.43 mi11:06:041:19:026:2220:16
6:31
+0:05
Half
13.11 mi11:10:281:23:266:224:24
6:27
-0:04
25K
15.53 mi11:26:171:39:156:2315:49
6:31
+0:04
30K
18.64 mi11:47:292:00:276:2821:12
6:49
+0:18
20M
20.00 mi11:57:052:10:036:309:36
7:04
+0:15
21M
21.00 mi12:04:282:17:266:337:23
7:23
+0:19
35K
21.75 mi12:09:342:22:326:335:06
6:49
-0:34
23M
23.00 mi12:18:042:31:026:348:30
6:47
-0:02
24M
24.00 mi12:24:532:37:516:356:49
6:49
+0:02
40K
24.85 mi12:30:422:43:406:355:49
6:49
0:00
25.2M
25.20 mi12:33:052:46:036:352:23
6:54
+0:05
Finish
26.22 mi12:40:072:53:056:367:02
6:54
0:00

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

6:09 /mi

Average Pace

6:36 /mi

Slowest Pace

7:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:15

57% of race

Time at Steady Pace

56:51

33% of race

Time at Slower Pace

16:59

10% of race

Average Pace: 6:36 /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 mi10:06:0819:066:0919:06
6:09
#1616
10K
6.21 mi10:25:5038:486:1519:42
6:20
#2110
15K
9.32 mi10:45:4858:466:1819:58
6:26
#2417
20K
12.43 mi11:06:041:19:026:2220:16
6:31
#2608
Half
13.11 mi11:10:281:23:266:224:24
6:27
#2644
25K
15.53 mi11:26:171:39:156:2315:49
6:31
#2678
30K
18.64 mi11:47:292:00:276:2821:12
6:49
#2799
20M
20.00 mi11:57:052:10:036:309:36
7:04
#2887
21M
21.00 mi12:04:282:17:266:337:23
7:23
#2927
35K
21.75 mi12:09:342:22:326:335:06
6:49
#2922
23M
23.00 mi12:18:042:31:026:348:30
6:47
#2868
24M
24.00 mi12:24:532:37:516:356:49
6:49
#2861
40K
24.85 mi12:30:422:43:406:355:49
6:49
#2838
25.2M
25.20 mi12:33:052:46:036:352:23
6:54
#2780
Finish
26.22 mi12:40:072:53:056:367:02
6:54
#2829
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi161676763120(Top 11%)143(Top 1%)143(Top 8%)
10K6.21 mi3.10 mi2110-49491-1591-152693(Top 9%)121(Top 1.0%)121(Top 7%)
15K9.32 mi3.11 mi2417-307103-12103-123120(Top 11%)143(Top 1%)143(Top 8%)
20K12.43 mi3.11 mi2608-191113-10113-103271(Top 12%)165(Top 1%)165(Top 10%)
Half13.11 mi0.68 mi2644-36115-2115-23434(Top 12%)169(Top 1%)169(Top 10%)
25K15.53 mi2.42 mi2678-34116-1116-13030(Top 11%)146(Top 1%)146(Top 8%)
30K18.64 mi3.11 mi2799-121125-9125-93603(Top 13%)252(Top 2%)252(Top 15%)
20M20.00 mi1.36 mi2887-88133-8133-84496(Top 16%)390(Top 3%)390(Top 23%)
21M21.00 mi1.00 mi2927-40141-8141-84052(Top 14%)367(Top 3%)367(Top 21%)
35K21.75 mi0.75 mi2922+5147-6147-64254(Top 15%)435(Top 4%)435(Top 25%)
23M23.00 mi1.25 mi2868+54142+5142+52671(Top 9%)202(Top 2%)202(Top 12%)
24M24.00 mi1.00 mi2861+7146-4146-43562(Top 13%)370(Top 3%)370(Top 22%)
40K24.85 mi0.85 mi2838+23145+1145+12908(Top 10%)280(Top 2%)280(Top 16%)
25.2M25.20 mi0.35 mi2780+58140+5140+51186(Top 4%)91(Top 0.7%)91(Top 5%)
Finish26.22 mi1.02 mi2829-49145-5145-55159(Top 18%)932(Top 8%)932(Top 54%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

3120

Females

143

F40-44

143

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2693

Females

121

F40-44

121

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

3120

Females

143

F40-44

143

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3271

Females

165

F40-44

165

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3434

Females

169

F40-44

169

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

3030

Females

146

F40-44

146

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3603

Females

252

F40-44

252

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4496

Females

390

F40-44

390

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

4052

Females

367

F40-44

367

21M→35K

21.0 - 21.8 mi

Top 15%
×7stories
+17ft-86ft

Overall

4254

Females

435

F40-44

435

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2671

Females

202

F40-44

202

23M→24M

23.0 - 24.0 mi

Top 13%
×6stories
+12ft-82ft

Overall

3562

Females

370

F40-44

370

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2908

Females

280

F40-44

280

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1186

Females

91

F40-44

91

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2stories
+22ft-21ft

Overall

5159

Females

932

F40-44

932

Passing Analysis

Category:
Athletes Passed
531
Passed By
1744
Net Change
-1213
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1616
5K → 10K7501-494#1616#2110
10K → 15K15322-307#2110#2417
15K → 20K30221-191#2417#2608
20K → Half440-36#2608#2644
Half → 25K5286-34#2644#2678
25K → 30K69190-121#2678#2799
30K → 20M32120-88#2799#2887
20M → 21M3373-40#2887#2927
21M → 35K3429+5#2927#2922
35K → 23M8228+54#2922#2868
23M → 24M4437+7#2868#2861
24M → 40K4825+23#2861#2838
40K → 25.2M580+58#2838#2780
25.2M → Finish2372-49#2780#2829
TOTALS5311744-1213
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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