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BOSTON MARATHON 2025

Katie Thomas

Bib: 20312•F

WI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 42%
Masters (Masters Women)
#0 / 6759
Top 28%
Division (F45-49)
#0 / 1813
Top 34%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:43
Rank: #16265
Start → 5K
7:57/mi
24:43 split
10K· 6.21 mi
49:51
Rank: #16701 (-436)
5K → 10K
8:05/mi
25:08 split
15K· 9.32 mi
1:15:04
Rank: #16737 (-36)
10K → 15K
8:07/mi
25:13 split
20K· 12.43 mi
1:40:50
Rank: #16785 (-48)
15K → 20K
8:18/mi
25:46 split
Half· 13.11 mi
1:46:18
Rank: #16733 (+52)
20K → Half
8:01/mi
5:28 split
25K· 15.53 mi
2:06:16
Rank: #16507 (+226)
Half → 25K
8:14/mi
19:58 split
30K· 18.64 mi
2:32:41
Rank: #16158 (+349)
25K → 30K
8:30/mi
26:25 split
20M
2:44:12
Rank: #15936 (+222)
30K → 20M
8:28/mi
11:31 split
21M
2:53:20
Rank: #15781 (+155)
20M → 21M
9:08/mi
9:08 split
35K· 21.75 mi
2:59:37
Rank: #15717 (+64)
21M → 35K
8:24/mi
6:17 split
23M
3:10:29
Rank: #15599 (+118)
35K → 23M
8:41/mi
10:52 split
24M
3:19:01
Rank: #15545 (+54)
23M → 24M
8:32/mi
8:32 split
40K· 24.85 mi
3:26:21
Rank: #15455 (+90)
24M → 40K
8:35/mi
7:20 split
25.2M
3:29:41
Rank: #15439 (+16)
40K → 25.2M
9:40/mi
3:20 split
Finish· 26.22 mi
3:38:21
Rank: #15450 (-11)
25.2M → Finish
8:30/mi
8:40 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:18
Pace8:07 /mi
2nd Half
Distance13.11 mi
Time1:52:03
Pace8:33 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:0724:437:5724:43
7:57
-
10K
6.21 mi11:44:1549:518:0125:08
8:05
+0:08
15K
9.32 mi12:09:281:15:048:0325:13
8:07
+0:02
20K
12.43 mi12:35:141:40:508:0725:46
8:18
+0:11
Half
13.11 mi12:40:421:46:188:075:28
8:01
-0:17
25K
15.53 mi13:00:402:06:168:0819:58
8:14
+0:13
30K
18.64 mi13:27:052:32:418:1126:25
8:30
+0:16
20M
20.00 mi13:38:362:44:128:1311:31
8:28
-0:02
21M
21.00 mi13:47:442:53:208:159:08
9:08
+0:40
35K
21.75 mi13:54:012:59:378:166:17
8:24
-0:44
23M
23.00 mi14:04:533:10:298:1710:52
8:41
+0:17
24M
24.00 mi14:13:253:19:018:188:32
8:32
-0:09
40K
24.85 mi14:20:453:26:218:187:20
8:35
+0:03
25.2M
25.20 mi14:24:053:29:418:193:20
9:40
+1:05
Finish
26.22 mi14:32:453:38:218:208:40
8:30
-1:10

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

7:57 /mi

Average Pace

8:20 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:30

46% of race

Time at Steady Pace

1:34:31

43% of race

Time at Slower Pace

23:20

11% of race

Average Pace: 8:20 /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 mi11:19:0724:437:5724:43
7:57
#16265
10K
6.21 mi11:44:1549:518:0125:08
8:05
#16701
15K
9.32 mi12:09:281:15:048:0325:13
8:07
#16737
20K
12.43 mi12:35:141:40:508:0725:46
8:18
#16785
Half
13.11 mi12:40:421:46:188:075:28
8:01
#16733
25K
15.53 mi13:00:402:06:168:0819:58
8:14
#16507
30K
18.64 mi13:27:052:32:418:1126:25
8:30
#16158
20M
20.00 mi13:38:362:44:128:1311:31
8:28
#15936
21M
21.00 mi13:47:442:53:208:159:08
9:08
#15781
35K
21.75 mi13:54:012:59:378:166:17
8:24
#15717
23M
23.00 mi14:04:533:10:298:1710:52
8:41
#15599
24M
24.00 mi14:13:253:19:018:188:32
8:32
#15545
40K
24.85 mi14:20:453:26:218:187:20
8:35
#15455
25.2M
25.20 mi14:24:053:29:418:193:20
9:40
#15439
Finish
26.22 mi14:32:453:38:218:208:40
8:30
#15450
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi162655310531016855(Top 59%)5640(Top 46%)5640(Top 311%)
10K6.21 mi3.10 mi16701-4365553-2435553-24317128(Top 60%)5774(Top 47%)5774(Top 318%)
15K9.32 mi3.11 mi16737-365571-185571-1816855(Top 59%)5640(Top 46%)5640(Top 311%)
20K12.43 mi3.11 mi16785-485610-395610-3916909(Top 60%)5723(Top 47%)5723(Top 316%)
Half13.11 mi0.68 mi16733+525580+305580+3016060(Top 57%)5221(Top 43%)5221(Top 288%)
25K15.53 mi2.42 mi16507+2265462+1185462+11815542(Top 55%)5050(Top 41%)5050(Top 279%)
30K18.64 mi3.11 mi16158+3495316+1465316+14614783(Top 52%)4789(Top 39%)4789(Top 264%)
20M20.00 mi1.36 mi15936+2225232+845232+8413659(Top 48%)4332(Top 35%)4332(Top 239%)
21M21.00 mi1.00 mi15781+1555181+515181+5114294(Top 50%)4787(Top 39%)4787(Top 264%)
35K21.75 mi0.75 mi15717+645168+135168+1314881(Top 52%)5170(Top 42%)5170(Top 285%)
23M23.00 mi1.25 mi15599+1185130+385130+3814446(Top 51%)5035(Top 41%)5035(Top 278%)
24M24.00 mi1.00 mi15545+545114+165114+1614754(Top 52%)5242(Top 43%)5242(Top 289%)
40K24.85 mi0.85 mi15455+905104+105104+1013954(Top 49%)4940(Top 40%)4940(Top 272%)
25.2M25.20 mi0.35 mi15439+165102+25102+215492(Top 55%)5816(Top 48%)5816(Top 321%)
Finish26.22 mi1.02 mi15450-115133-315133-3116260(Top 57%)6164(Top 50%)6164(Top 340%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

16855

Females

5640

F45-49

5640

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

17128

Females

5774

F45-49

5774

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

16855

Females

5640

F45-49

5640

15K→20K

9.3 - 12.4 mi

Top 60%
×5story building
+106ft-86ft

Overall

16909

Females

5723

F45-49

5723

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

16060

Females

5221

F45-49

5221

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

15542

Females

5050

F45-49

5050

25K→30K

15.5 - 18.6 mi

Top 52%
×9story building
+181ft-148ft

Overall

14783

Females

4789

F45-49

4789

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

13659

Females

4332

F45-49

4332

20M→21M

20.0 - 21.0 mi

Top 50%
×8story building
+106ft-24ft

Overall

14294

Females

4787

F45-49

4787

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

14881

Females

5170

F45-49

5170

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

14446

Females

5035

F45-49

5035

23M→24M

23.0 - 24.0 mi

Top 52%
×6story building
+12ft-82ft

Overall

14754

Females

5242

F45-49

5242

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13954

Females

4940

F45-49

4940

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15492

Females

5816

F45-49

5816

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

16260

Females

6164

F45-49

6164

Passing Analysis

Category:
Athletes Passed
2272
Passed By
1457
Net Change
+815
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16265
5K → 10K151587-436#16265#16701
10K → 15K196232-36#16701#16737
15K → 20K181229-48#16737#16785
20K → Half6513+52#16785#16733
Half → 25K26842+226#16733#16507
25K → 30K41768+349#16507#16158
30K → 20M24220+222#16158#15936
20M → 21M18934+155#15936#15781
21M → 35K10036+64#15781#15717
35K → 23M16345+118#15717#15599
23M → 24M9339+54#15599#15545
24M → 40K11525+90#15545#15455
40K → 25.2M3317+16#15455#15439
25.2M → Finish5970-11#15439#15450
TOTALS22721457+815
📊

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