Boston Marathon logo
BOSTON MARATHON 2025

Christopher Milbourne

Bib: 1858•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 6%
Gender (Male)
#0 / 16105
Top 10%
Division (M18-39)
#0 / 5642
Top 24%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:36
Rank: #1052
Start → 5K
5:59/mi
18:36 split
10K· 6.21 mi
37:22
Rank: #1114 (-62)
5K → 10K
6:02/mi
18:46 split
15K· 9.32 mi
56:11
Rank: #1141 (-27)
10K → 15K
6:03/mi
18:49 split
20K· 12.43 mi
1:15:00
Rank: #1088 (+53)
15K → 20K
6:03/mi
18:49 split
Half· 13.11 mi
1:19:05
Rank: #1088
20K → Half
5:59/mi
4:05 split
25K· 15.53 mi
1:34:29
Rank: #1208 (-120)
Half → 25K
6:21/mi
15:24 split
30K· 18.64 mi
1:54:14
Rank: #1224 (-16)
25K → 30K
6:21/mi
19:45 split
20M
2:03:22
Rank: #1284 (-60)
30K → 20M
6:43/mi
9:08 split
21M
2:10:55
Rank: #1389 (-105)
20M → 21M
7:33/mi
7:33 split
35K· 21.75 mi
2:15:59
Rank: #1440 (-51)
21M → 35K
6:46/mi
5:04 split
23M
2:24:44
Rank: #1522 (-82)
35K → 23M
6:59/mi
8:45 split
24M
2:31:28
Rank: #1547 (-25)
23M → 24M
6:44/mi
6:44 split
40K· 24.85 mi
2:37:24
Rank: #1597 (-50)
24M → 40K
6:56/mi
5:56 split
25.2M
2:40:05
Rank: #1632 (-35)
40K → 25.2M
7:47/mi
2:41 split
Finish· 26.22 mi
2:46:49
Rank: #1683 (-51)
25.2M → Finish
6:36/mi
6:44 split

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
Time1:19:05
Pace6:02 /mi
2nd Half
Distance13.11 mi
Time1:27:44
Pace6:42 /mi
📊Positive Split: 10.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:2318:365:5918:36
5:59
-
10K
6.21 mi10:38:0937:226:0118:46
6:02
+0:03
15K
9.32 mi10:56:5856:116:0218:49
6:03
+0:01
20K
12.43 mi11:15:471:15:006:0218:49
6:03
0:00
Half
13.11 mi11:19:521:19:056:024:05
5:59
-0:04
25K
15.53 mi11:35:161:34:296:0515:24
6:21
+0:22
30K
18.64 mi11:55:011:54:146:0819:45
6:21
0:00
20M
20.00 mi12:04:092:03:226:109:08
6:43
+0:22
21M
21.00 mi12:11:422:10:556:147:33
7:33
+0:50
35K
21.75 mi12:16:462:15:596:155:04
6:46
-0:47
23M
23.00 mi12:25:312:24:446:188:45
6:59
+0:13
24M
24.00 mi12:32:152:31:286:196:44
6:44
-0:15
40K
24.85 mi12:38:112:37:246:205:56
6:56
+0:12
25.2M
25.20 mi12:40:522:40:056:212:41
7:47
+0:51
Finish
26.22 mi12:47:362:46:496:226:44
6:36
-1:11

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

5:59 /mi

Average Pace

6:22 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:19:05

47% of race

Time at Steady Pace

1:02:49

38% of race

Time at Slower Pace

24:55

15% of race

Average Pace: 6:22 /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 mi10:19:2318:365:5918:36
5:59
#1052
10K
6.21 mi10:38:0937:226:0118:46
6:02
#1114
15K
9.32 mi10:56:5856:116:0218:49
6:03
#1141
20K
12.43 mi11:15:471:15:006:0218:49
6:03
#1088
Half
13.11 mi11:19:521:19:056:024:05
5:59
#1088
25K
15.53 mi11:35:161:34:296:0515:24
6:21
#1208
30K
18.64 mi11:55:011:54:146:0819:45
6:21
#1224
20M
20.00 mi12:04:092:03:226:109:08
6:43
#1284
21M
21.00 mi12:11:422:10:556:147:33
7:33
#1389
35K
21.75 mi12:16:462:15:596:155:04
6:46
#1440
23M
23.00 mi12:25:312:24:446:188:45
6:59
#1522
24M
24.00 mi12:32:152:31:286:196:44
6:44
#1547
40K
24.85 mi12:38:112:37:246:205:56
6:56
#1597
25.2M
25.20 mi12:40:522:40:056:212:41
7:47
#1632
Finish
26.22 mi12:47:362:46:496:226:44
6:36
#1683
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi10529939931220(Top 4%)1158(Top 7%)1158(Top 21%)
10K6.21 mi3.10 mi1114-621051-581051-581240(Top 4%)1176(Top 7%)1176(Top 21%)
15K9.32 mi3.11 mi1141-271079-281079-281220(Top 4%)1158(Top 7%)1158(Top 21%)
20K12.43 mi3.11 mi1088+531028+511028+511030(Top 4%)971(Top 6%)971(Top 17%)
Half13.11 mi0.68 mi1088102810281127(Top 4%)1069(Top 7%)1069(Top 19%)
25K15.53 mi2.42 mi1208-1201142-1141142-1142125(Top 7%)2021(Top 13%)2021(Top 36%)
30K18.64 mi3.11 mi1224-161156-141156-141383(Top 5%)1307(Top 8%)1307(Top 23%)
20M20.00 mi1.36 mi1284-601212-561212-562553(Top 9%)2401(Top 15%)2401(Top 43%)
21M21.00 mi1.00 mi1389-1051311-991311-994862(Top 17%)4272(Top 27%)4272(Top 76%)
35K21.75 mi0.75 mi1440-511361-501361-503939(Top 14%)3539(Top 22%)3539(Top 63%)
23M23.00 mi1.25 mi1522-821441-801441-803695(Top 13%)3339(Top 21%)3339(Top 59%)
24M24.00 mi1.00 mi1547-251463-221463-223133(Top 11%)2829(Top 18%)2829(Top 50%)
40K24.85 mi0.85 mi1597-501512-491512-493570(Top 13%)3166(Top 20%)3166(Top 56%)
25.2M25.20 mi0.35 mi1632-351544-321544-324749(Top 17%)3947(Top 25%)3947(Top 70%)
Finish26.22 mi1.02 mi1683-511593-491593-493373(Top 12%)2957(Top 18%)2957(Top 52%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21story building
+97ft-345ft

Overall

1220

Males

1158

M18-39

1158

5K→10K

3.1 - 6.2 mi

Top 4%
×5story building
+79ft-138ft

Overall

1240

Males

1176

M18-39

1176

10K→15K

6.2 - 9.3 mi

Top 4%
×3story building
+67ft-78ft

Overall

1220

Males

1158

M18-39

1158

15K→20K

9.3 - 12.4 mi

Top 4%
×5story building
+106ft-86ft

Overall

1030

Males

971

M18-39

971

20K→Half

12.4 - 13.1 mi

Top 4%
×2story building
+19ft-37ft

Overall

1127

Males

1069

M18-39

1069

Half→25K

13.1 - 15.5 mi

Top 7%
×4story building
+66ft-88ft

Overall

2125

Males

2021

M18-39

2021

25K→30K

15.5 - 18.6 mi

Top 5%
×9story building
+181ft-148ft

Overall

1383

Males

1307

M18-39

1307

30K→20M

18.6 - 20.0 mi

Top 9%
×5story building
+64ft-50ft

Overall

2553

Males

2401

M18-39

2401

20M→21M

20.0 - 21.0 mi

Top 17%
×8story building
+106ft-24ft

Overall

4862

Males

4272

M18-39

4272

21M→35K

21.0 - 21.8 mi

Top 14%
×7story building
+17ft-86ft

Overall

3939

Males

3539

M18-39

3539

35K→23M

21.8 - 23.0 mi

Top 13%
×5story building
+23ft-63ft

Overall

3695

Males

3339

M18-39

3339

23M→24M

23.0 - 24.0 mi

Top 11%
×6story building
+12ft-82ft

Overall

3133

Males

2829

M18-39

2829

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3570

Males

3166

M18-39

3166

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4749

Males

3947

M18-39

3947

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2story building
+22ft-21ft

Overall

3373

Males

2957

M18-39

2957

Passing Analysis

Category:
Athletes Passed
291
Passed By
922
Net Change
-631
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1052
5K → 10K3193-62#1052#1114
10K → 15K2350-27#1114#1141
15K → 20K6613+53#1141#1088
20K → Half550#1088#1088
Half → 25K11131-120#1088#1208
25K → 30K4864-16#1208#1224
30K → 20M1979-60#1224#1284
20M → 21M8113-105#1284#1389
21M → 35K1162-51#1389#1440
35K → 23M23105-82#1440#1522
23M → 24M1540-25#1522#1547
24M → 40K1363-50#1547#1597
40K → 25.2M338-35#1597#1632
25.2M → Finish1566-51#1632#1683
TOTALS291922-631
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing